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Dairy Cattle Reproduction and Genetics | Penn State Extension
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class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/pasture-and-environment-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-153" >Pasture and Environment Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/nutrition-and-feeding" class="main-menu__inner-link menu-link-level-2" data-menu="menu-156" >Nutrition and Feeding</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/health-and-care" class="main-menu__inner-link menu-link-level-2" data-menu="menu-159" >Health and Care</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/reproduction-and-genetics" class="main-menu__inner-link menu-link-level-2" data-menu="menu-162" >Reproduction and Genetics</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/manure-and-nutrient-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-165" >Manure and Nutrient Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/facilities-and-technology" class="main-menu__inner-link menu-link-level-2" data-menu="menu-168" >Facilities and Technology</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-171" >Personal Safety </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/equine/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-174" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/animals-and-livestock/swine" class="main-menu__inner-link menu-link-level-1" data-menu="menu-195" >Swine</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Swine</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-195"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/animals-and-livestock/swine" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/production-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-198" >Production and Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/product-quality" class="main-menu__inner-link menu-link-level-2" data-menu="menu-201" >Product Quality</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/nutrition-and-feeding" class="main-menu__inner-link menu-link-level-2" data-menu="menu-204" >Nutrition and Feeding</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/health-and-care" class="main-menu__inner-link menu-link-level-2" data-menu="menu-207" >Health and Care</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/reproduction-and-genetics" class="main-menu__inner-link menu-link-level-2" data-menu="menu-210" >Reproduction and Genetics</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/manure-and-nutrient-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-213" >Manure and Nutrient Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/facilities-and-technology" class="main-menu__inner-link menu-link-level-2" data-menu="menu-216" >Facilities and Technology</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-219" >Personal Safety </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/swine/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-222" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/animals-and-livestock/goats" class="main-menu__inner-link menu-link-level-1" data-menu="menu-243" >Goats</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Goats</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-243"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/animals-and-livestock/goats" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/production-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-246" >Production and Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/product-quality" class="main-menu__inner-link menu-link-level-2" data-menu="menu-249" >Product Quality</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/nutrition-and-feeding" class="main-menu__inner-link menu-link-level-2" data-menu="menu-252" >Nutrition and Feeding</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/health-and-care" class="main-menu__inner-link menu-link-level-2" data-menu="menu-255" >Health and Care</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/reproduction-and-genetics" class="main-menu__inner-link menu-link-level-2" data-menu="menu-258" >Reproduction and Genetics</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/manure-and-nutrient-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-261" >Manure and Nutrient Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/facilities-and-technology" class="main-menu__inner-link menu-link-level-2" data-menu="menu-264" >Facilities and Technology</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-267" >Personal Safety </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/goats/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-270" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/animals-and-livestock/sheep" class="main-menu__inner-link menu-link-level-1" data-menu="menu-291" >Sheep</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Sheep</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-291"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/animals-and-livestock/sheep" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/production-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-294" >Production and Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/product-quality" class="main-menu__inner-link menu-link-level-2" data-menu="menu-297" >Product Quality</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/nutrition-and-feeding" class="main-menu__inner-link menu-link-level-2" data-menu="menu-300" >Nutrition and Feeding</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/health-and-care" class="main-menu__inner-link menu-link-level-2" data-menu="menu-303" >Health and Care</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/reproduction-and-genetics" class="main-menu__inner-link menu-link-level-2" data-menu="menu-306" >Reproduction and Genetics</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/manure-and-nutrient-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-309" >Manure and Nutrient Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/facilities-and-technology" class="main-menu__inner-link menu-link-level-2" data-menu="menu-312" >Facilities and Technology</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-315" >Personal Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/sheep/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-318" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas" class="main-menu__inner-link menu-link-level-1" data-menu="menu-339" >Llamas and Alpacas</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Llamas and Alpacas</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-339"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas/nutrition-and-feeding" class="main-menu__inner-link menu-link-level-2" data-menu="menu-348" >Nutrition and Feeding</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas/health-and-care" class="main-menu__inner-link menu-link-level-2" data-menu="menu-351" >Health and Care</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas/manure-and-nutrient-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-357" >Manure and Nutrient Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas/facilities-and-technology" class="main-menu__inner-link menu-link-level-2" data-menu="menu-360" >Facilities and Technology</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/llamas-and-alpacas/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-366" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/animals-and-livestock/canine" class="main-menu__inner-link menu-link-level-1" data-menu="menu-2608" >Canine</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Canine</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-2608"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/animals-and-livestock/canine" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/canine/nutrition-and-feeding" class="main-menu__inner-link menu-link-level-2" data-menu="menu-2611" >Nutrition and Feeding</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/canine/behavior-and-welfare" class="main-menu__inner-link menu-link-level-2" data-menu="menu-2614" >Behavior and Welfare</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/canine/health-and-care" class="main-menu__inner-link menu-link-level-2" data-menu="menu-2617" >Health and Care</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/animals-and-livestock/canine/reproduction-and-genetics" class="main-menu__inner-link menu-link-level-2" data-menu="menu-2620" >Reproduction and Genetics</a> </div></li> </ul></div></div></li> </ul></div></div></li> <li class="main-menu__item  main-menu__item--parent level0"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops" class="main-menu__link menu-link-level-0" data-menu="menu-387" >Forage and Food Crops </a> </div><div data-role="content" class="menu-item"><div class="menu-title"><div class="back" data-role="back"><span>Forage and Food Crops </span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div> <div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level1" data-menu="menu-387"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level1 1"> <a href="https://extension.psu.edu/forage-and-food-crops" class="main-menu__inner-link menu-link-level-0" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops" class="main-menu__inner-link menu-link-level-1" data-menu="menu-390" >Agronomic Crops</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Agronomic Crops</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-390"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/production-and-harvesting" class="main-menu__inner-link menu-link-level-2" data-menu="menu-393" >Production and Harvesting</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/species-and-varieties" class="main-menu__inner-link menu-link-level-2" data-menu="menu-396" >Species and Varieties</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/soil-fertility-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-399" >Soil Fertility and Management </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/pests-and-diseases" class="main-menu__inner-link menu-link-level-2" data-menu="menu-402" >Pests and Diseases</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/weed-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-405" >Weed Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/organic-production" class="main-menu__inner-link menu-link-level-2" data-menu="menu-408" >Organic Production</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/sustainable-agriculture" class="main-menu__inner-link menu-link-level-2" data-menu="menu-411" >Sustainable Agriculture</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-414" >Personal Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/agronomic-crops/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-417" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops" class="main-menu__inner-link menu-link-level-1" data-menu="menu-438" >Cover Crops</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Cover Crops</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-438"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/production-and-harvesting" class="main-menu__inner-link menu-link-level-2" data-menu="menu-441" >Production and Harvesting</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/species-and-varieties" class="main-menu__inner-link menu-link-level-2" data-menu="menu-444" >Species and Varieties</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/soil-fertility-and-management" class="main-menu__inner-link current menu-link-level-2" data-menu="menu-447" >Soil Fertility and Management </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/pests-and-diseases" class="main-menu__inner-link menu-link-level-2" data-menu="menu-450" >Pests and Diseases</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/weed-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-453" >Weed Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/organic-production" class="main-menu__inner-link menu-link-level-2" data-menu="menu-456" >Organic Production</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/sustainable-agriculture" class="main-menu__inner-link menu-link-level-2" data-menu="menu-459" >Sustainable Agriculture</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-462" >Personal Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/cover-crops/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-465" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops/forages" class="main-menu__inner-link menu-link-level-1" data-menu="menu-483" >Forages</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Forages</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-483"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/forage-and-food-crops/forages" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/production-and-harvesting" class="main-menu__inner-link menu-link-level-2" data-menu="menu-486" >Production and Harvesting</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/species-and-varieties" class="main-menu__inner-link menu-link-level-2" data-menu="menu-489" >Species and Varieties</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/soil-fertility-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-492" >Soil Fertility and Management </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/forage-quality-and-testing" class="main-menu__inner-link menu-link-level-2" data-menu="menu-495" >Forage Quality and Testing</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/pests-and-diseases" class="main-menu__inner-link menu-link-level-2" data-menu="menu-498" >Pests and Diseases</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/weed-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-501" >Weed Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/organic-production" class="main-menu__inner-link menu-link-level-2" data-menu="menu-504" >Organic Production</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/sustainable-agriculture" class="main-menu__inner-link menu-link-level-2" data-menu="menu-507" >Sustainable Agriculture</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-510" >Personal Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/forages/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-513" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops/fruit" class="main-menu__inner-link menu-link-level-1" data-menu="menu-537" >Fruit</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Fruit</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-537"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/forage-and-food-crops/fruit" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/production-and-harvesting" class="main-menu__inner-link menu-link-level-2" data-menu="menu-540" >Production and Harvesting</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/cultivars-and-rootstocks" class="main-menu__inner-link menu-link-level-2" data-menu="menu-543" >Cultivars and Rootstocks</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/soil-fertility-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-546" >Soil Fertility and Management </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/pests-and-diseases" class="main-menu__inner-link menu-link-level-2" data-menu="menu-549" >Pests and Diseases</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/weed-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-552" >Weed Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/organic-production" class="main-menu__inner-link menu-link-level-2" data-menu="menu-555" >Organic Production</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/sustainable-agriculture" class="main-menu__inner-link menu-link-level-2" data-menu="menu-558" >Sustainable Agriculture</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-561" >Personal Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/fruit/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-564" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms" class="main-menu__inner-link menu-link-level-1" data-menu="menu-636" >Mushrooms</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Mushrooms</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-636"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms/production-and-harvesting" class="main-menu__inner-link menu-link-level-2" data-menu="menu-639" >Production and Harvesting</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms/substrate-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-645" >Substrate Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms/pests-and-diseases" class="main-menu__inner-link menu-link-level-2" data-menu="menu-648" >Pests and Diseases</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms/food-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-651" >Food Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/mushrooms/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-657" >Business Management</a> </div></li> </ul></div></div></li> <li class="main-menu__inner-item main-menu__inner-item--level1 level1 main-menu__inner-item--parent"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables" class="main-menu__inner-link menu-link-level-1" data-menu="menu-585" >Vegetables</a> </div> <div data-role="content" class="menu-item"><div class="menu-title"><div data-role="back" class="back"><span>Vegetables</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div><div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level2" data-menu="menu-585"> <li class="main-menu__inner-item main-menu__inner-item--all view-all main-menu__inner-item--level2 2"> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables" class="main-menu__inner-link menu-link-level-1" >View All</a> </li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/production-and-harvesting" class="main-menu__inner-link menu-link-level-2" data-menu="menu-588" >Production and Harvesting</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/species-and-varieties" class="main-menu__inner-link menu-link-level-2" data-menu="menu-591" >Species and Varieties</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/soil-fertility-and-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-594" >Soil Fertility and Management </a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/pests-and-diseases" class="main-menu__inner-link menu-link-level-2" data-menu="menu-597" >Pests and Diseases</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/weed-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-600" >Weed Management</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/organic-production" class="main-menu__inner-link menu-link-level-2" data-menu="menu-603" >Organic Production</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/sustainable-agriculture" class="main-menu__inner-link menu-link-level-2" data-menu="menu-606" >Sustainable Agriculture</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/personal-safety" class="main-menu__inner-link menu-link-level-2" data-menu="menu-609" >Personal Safety</a> </div></li> <li class="main-menu__inner-item main-menu__inner-item--level2 level2 no-children"><div data-role="title" class=""> <a href="https://extension.psu.edu/forage-and-food-crops/vegetables/business-management" class="main-menu__inner-link menu-link-level-2" data-menu="menu-612" >Business Management</a> </div></li> </ul></div></div></li> </ul></div></div></li> <li class="main-menu__item  main-menu__item--parent level0"><div data-role="title" class="parent-category-title"> <a href="https://extension.psu.edu/trees-lawns-and-landscaping" class="main-menu__link menu-link-level-0" data-menu="menu-675" >Trees, Lawns, and Landscaping</a> </div><div data-role="content" class="menu-item"><div class="menu-title"><div class="back" data-role="back"><span>Trees, Lawns, and Landscaping</span></div><div class="close-menu" data-action="toggle-nav"><span>Close</span></div></div> <div class="menu-content"> <ul class="main-menu__inner-list main-menu__inner-list--level1" data-menu="menu-675"> <li class="main-menu__inner-item 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id="page-title-heading" aria-labelledby="page-title-heading toolbar-amount" ><span class="base" data-ui-id="page-title-wrapper" >Reproduction and Genetics</span></h1> </div><div class="page messages"> <div data-placeholder="messages"></div> <div data-bind="scope: 'messages'"><!-- ko if: cookieMessagesObservable() && cookieMessagesObservable().length > 0 --><div aria-atomic="true" role="alert" class="messages" data-bind="foreach: { data: cookieMessagesObservable(), as: 'message' }"><div data-bind="attr: { class: 'message-' + message.type + ' ' + message.type + ' message', 'data-ui-id': 'message-' + message.type }"><div data-bind="html: $parent.prepareMessageForHtml(message.text)"></div></div></div><!-- /ko --><div aria-atomic="true" role="alert" class="messages" data-bind="foreach: { data: messages().messages, as: 'message' }, afterRender: purgeMessages"><div data-bind="attr: { class: 'message-' + message.type + ' ' + message.type + ' message', 'data-ui-id': 'message-' + message.type }"><div data-bind="html: $parent.prepareMessageForHtml(message.text)"></div></div></div></div></div><div class="category-view"> <div class="category-description"><p>Information on dairy cow optimal breeding time, estrous cycle, artificial insemination, and calving. Find resources on heat detection, cow gestation, and breeding dairy cows for milk production.</p> <h2>Dairy Cattle Reproductive Management</h2> <p>The reproductive performance of a dairy herd is one of the most important factors in a cattle farm’s profitability. Successful reproductive management has a significant impact on the herd’s overall performance and producers’ net income.</p> <p>Heifers must have a calf before they can produce milk, older cows must calve at regular intervals to keep producing milk, and calving is vital for dairy herd replacement programs.</p> <p>To achieve reproductive efficiency, producers need a high proportion of dairy cattle to become pregnant early in the optimum conception period. Use Penn State Extension’s resources on <a href="https://extension.psu.edu/heat-detection-and-timing-of-insemination-for-cattle">Heat Detection and Timing of Insemination for Cattle</a> to ensure efficient and profitable reproductive performance of your dairy herd. </p> <h2>Dairy Cow Heat Detection, Estrous Cycle, and Artificial Insemination</h2> <p>Depending on the breed, the optimal age for first calving ranges from 20 to 26 months, and calving once a year is usually the goal. After each calving, cows do not come into estrus for some time, on average 60 days. This anestrus period can range significantly, though – from only 17 days to 150 days depending on various factors. A significant goal for producers is to reduce the number of days that a cow is “open” (not pregnant). <a href="https://extension.psu.edu/cyclicity-in-dairy-cows-defining-the-issue">Open cows</a> equal profit losses for farmers because they can result in long calving intervals. </p> <p>Learn more about the stages in the 21-day <a href="https://extension.psu.edu/characteristics-of-the-bovine-estrous-cycle">bovine estrous cycle</a> to accurately determine the dairy cow optimum breeding time. Adapt heat-detection techniques for monitoring cows’ reproductive status and identify the best time for artificial insemination. From <a href="https://extension.psu.edu/milk-progesterone-analysis-for-determining-reproductive-status">milk progesterone analysis</a> to <a href="https://extension.psu.edu/using-activity-systems-to-identify-optimum-breeding-time">activity monitoring systems</a>, our resources are designed to help dairy producers identify cows in heat and increase conception rates.</p> <p>Find more information on <a href="https://extension.psu.edu/using-artificial-insemination-in-a-commercial-breeding-herd">cow artificial insemination</a>, <a href="https://extension.psu.edu/progesterone-ovulation-and-pregnancy">supplementation of progesterone</a>, and <a href="https://extension.psu.edu/predicting-pregnancy-loss">predicting pregnancy loss</a> in your dairy cattle. </p> <h2>Cow Gestation and Calving</h2> <p>The cow gestation period is about 283 days, though it varies by breed and by sex of the calf. Monitoring heifers and cows due to calve is vital in decreasing dystocia and improving calf survival rates. Take advantage of Penn State Extension information resources, such as <a href="https://extension.psu.edu/calving-alert-systems-know-exactly-when-your-cow-is-calving">Calving Alert Systems: Know Exactly When Your Cow is Calving</a>.</p> <p>Available to dairy producers is our video series on <a href="https://extension.psu.edu/maternity-management-practices-in-dairy-farms">parturition and calving best practices</a> and an <a href="https://extension.psu.edu/calving-management-practices-on-farm-workshop">on-farm workshop on calving management practices</a>.</p> <h2>Dairy Cattle Infertility Issues</h2> <p>Information on dairy cattle infertility is also available in this section. Learn more about how to identify and treat <a href="https://extension.psu.edu/trouble-shooting-infertility-problems-in-cattle">common infertility problems</a>.</p> <p>Some cattle diseases, such as bovine viral diarrhea, leptospirosis, and trichomoniasis, are associated with reproductive loss, so producers should make sure they vaccinate their cow herd against reproductive diseases. Visit the <a href="https://extension.psu.edu/animals-and-livestock/dairy/health-and-care">Dairy Cow Health and Diseases</a> section for more information on keeping your herd healthy.</p> <h2>Dairy Cattle Breeds</h2> <p>Cattle breeding programs are equally important to single herd farmers and to large-scale farming companies.</p> <p>Improving the commercial production of farm stock starts with selecting the animals from which to breed. Creating herds from cattle with genes for desirable characteristics allow farmers to achieve a heard with good performers and good breeders. These factors should be taken into account when <a href="https://extension.psu.edu/replacement-heifer-selection">selecting and developing replacement heifers</a>, as well.</p> <p>The main dairy cattle breeds are Ayrshire, Brown Swiss, Guernsey, Holstein, Jersey, Milking Shorthorn, American Milking Devon, and Red and White Holstein. Producers can use this <a href="https://extension.psu.edu/growth-charts-for-dairy-heifers">growth chart for dairy heifers</a> to compare to the breed standard.</p></div> </div><div class="columns"><div class="sidebar sidebar-main"> <div class="block filter" id="layered-filter-block" data-mage-init='{"collapsible":{"openedState": "active", "collapsible": true, "active": false, "collateral": { "openedState": "filter-active", "element": "body" } }}'> <div class="block-title filter-title" data-count="0"><strong data-role="title">Narrow By</strong></div><div class="block-content filter-content"> <strong role="heading" aria-level="2" class="block-subtitle filter-subtitle">Narrow By:</strong> <div class="filter-options" id="narrow-by-list" data-role="content" data-mage-init='{"accordion":{"openedState": "active", "collapsible": true, "active": [0,1,2], "multipleCollapsible": true}}'> <div data-role="collapsible" class="filter-options-item"><div data-role="title" 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class="product-item-info" id="product-item-info_36298" data-container="product-list"> <a href="https://extension.psu.edu/dairy-heifer-inventory-decisions" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-36298-67bfd45b2255c"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/c/5/c5b06f0ec8b1de0bab97bd85f4fa058c.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/c/5/c5b06f0ec8b1de0bab97bd85f4fa058c.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/c/5/c5b06f0ec8b1de0bab97bd85f4fa058c.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo Credit Andrew Sandeen, Penn State Extension"/></span></span> <style>.product-image-container-3629867bfd45b2255c { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3629867bfd45b2255c span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3629867bfd45b2255c span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/dairy-heifer-inventory-decisions">Dairy Heifer Inventory Decisions</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen</span></div> </div> <div class="product-short-description">The decision on which heifers to keep is a challenging decision. Take the time to evaluate your herd before breeding.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_37489" data-container="product-list"> <a href="https://extension.psu.edu/artificial-insemination-technique-cattle" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-37489-67bfd45b233f5"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/1/0/101fda405ff1f77e729f454109921d78.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/1/0/101fda405ff1f77e729f454109921d78.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/1/0/101fda405ff1f77e729f454109921d78.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Artificial Insemination Technique: Cattle"/></span></span> <style>.product-image-container-3748967bfd45b233f5 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3748967bfd45b233f5 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3748967bfd45b233f5 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/artificial-insemination-technique-cattle">Artificial Insemination Technique: Cattle</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Michael L. O'Connor, Jana L. Peters</span></div> </div> <div class="product-short-description">This article provides a review for those already familiar with AI technique, emphasizing reproductive anatomy, sanitation, and accuracy of semen deposition.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_65950" data-container="product-list"> <a href="https://extension.psu.edu/wheres-the-beef-navigating-raising-beef-on-dairy-crosses-and-the-markets" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-65950-67bfd45b2422f"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/2/f/2fc7498ca682429460f1a6b7ccfbd350.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/2/f/2fc7498ca682429460f1a6b7ccfbd350.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/2/f/2fc7498ca682429460f1a6b7ccfbd350.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Where's the Beef? Navigating Raising Beef on Dairy Crosses and the Markets"/></span></span> <style>.product-image-container-6595067bfd45b2422f { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-6595067bfd45b2422f span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-6595067bfd45b2422f span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/wheres-the-beef-navigating-raising-beef-on-dairy-crosses-and-the-markets">Where's the Beef? Navigating Raising Beef on Dairy Crosses and the Markets</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Angela Breneman</span></div> </div> <div class="product-short-description">Beef on dairy crosses have been popular amongst dairy producers over the last few years, but is it right for your farm and genetics plan?</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_36059" data-container="product-list"> <a href="https://extension.psu.edu/2021-beef-sired-progeny-from-dairy-cows" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-36059-67bfd45b2505e"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/7/c/7c3317d1008902d0daf236089ea7ef44.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/7/c/7c3317d1008902d0daf236089ea7ef44.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/7/c/7c3317d1008902d0daf236089ea7ef44.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Black hides are popular among beef x dairy matings."/></span></span> <style>.product-image-container-3605967bfd45b2505e { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3605967bfd45b2505e span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3605967bfd45b2505e span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/2021-beef-sired-progeny-from-dairy-cows">2021 Beef Sired Progeny from Dairy Cows</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Tara L. Felix, Bailey Basiel</span></div> </div> <div class="product-short-description">Over the last 3 years, beef semen sales have nearly tripled, due to increased beef on dairy matings. But, not all beef x dairy crossbred cattle meet expectations. Penn State is investigating the optimal beef genetics for crossbreds calves.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_64237" data-container="product-list"> <a href="https://extension.psu.edu/applied-dairy-management-series-transition-cow-systemic-inflammation" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-64237-67bfd45b25e7a"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/4/5/450dd328815ae82a91490dee8ec1e4f0.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/4/5/450dd328815ae82a91490dee8ec1e4f0.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/4/5/450dd328815ae82a91490dee8ec1e4f0.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Applied Dairy Management Series: Transition Cow Systemic Inflammation"/></span></span> <style>.product-image-container-6423767bfd45b25e7a { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-6423767bfd45b25e7a span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-6423767bfd45b25e7a span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="810"></span> Webinars</div> <div class="price-box price-final_price" data-role="priceBox" data-product-id="64237" data-price-box="product-id-64237"> <p class="minimal-price"> <span class="price-container price-final_price tax weee" > <span class="price-label"></span> <span id="from-64237" data-price-amount="0" data-price-type="" class="price-wrapper " ><span class="price">Free</span></span> </span> </p></div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/applied-dairy-management-series-transition-cow-systemic-inflammation">Applied Dairy Management Series: Transition Cow Systemic Inflammation</a></h5><div class="product-attributes"> <div class='attribute when'><span class='label'>When </span><span class='value'>09/09/2024</span></div> <div class='attribute cvent_event_format'><span class='label'>Event Format </span><span class='value'>Virtual | Live</span></div> </div> <div class="product-short-description">Learn about systemic inflammation in dairy cows, including the latest findings, management strategies, and economic impacts in our bimonthly webinar series.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_34092" data-container="product-list"> <a href="https://extension.psu.edu/national-genetic-evaluations-foster-healthier-organic-cows" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-34092-67bfd45b29852"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/3/7/3727e6e356639171b165e0885ca6eb6e.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/3/7/3727e6e356639171b165e0885ca6eb6e.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/3/7/3727e6e356639171b165e0885ca6eb6e.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Image by Arek Socha from Pixabay"/></span></span> <style>.product-image-container-3409267bfd45b29852 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3409267bfd45b29852 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3409267bfd45b29852 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/national-genetic-evaluations-foster-healthier-organic-cows">National Genetic Evaluations Foster Healthier Organic Cows</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Lydia Hardie</span></div> </div> <div class="product-short-description">Selecting for good genetic merit for disease resistance is important for the profitability of organic and conventional dairy farms.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_57240" data-container="product-list"> <a href="https://extension.psu.edu/how-long-should-the-voluntary-waiting-period-be" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-57240-67bfd45b2a5e0"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/6/c/6c3a4a57bf99bd84deb372d0b5f208c2.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/6/c/6c3a4a57bf99bd84deb372d0b5f208c2.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/6/c/6c3a4a57bf99bd84deb372d0b5f208c2.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="How Long Should the Voluntary Waiting Period Be?"/></span></span> <style>.product-image-container-5724067bfd45b2a5e0 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-5724067bfd45b2a5e0 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-5724067bfd45b2a5e0 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/how-long-should-the-voluntary-waiting-period-be">How Long Should the Voluntary Waiting Period Be?</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Emily Fread</span></div> </div> <div class="product-short-description">The Voluntary Waiting Period is the time between calving and when a farmer chooses to rebreed that cow. The Voluntary Waiting Period set can impact the calving interval and length of lactation.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_54837" data-container="product-list"> <a href="https://extension.psu.edu/2023-beef-sired-progeny-from-dairy-cows" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-54837-67bfd45b2b37c"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/d/5/d5bf2e7ad64dcdcd8ff8c38ba74e8698.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/d/5/d5bf2e7ad64dcdcd8ff8c38ba74e8698.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/d/5/d5bf2e7ad64dcdcd8ff8c38ba74e8698.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Beef sired calves from dairy dams are filling approximately 20% of the US fed cattle supply. Photo credit: Michelle Kunjappu"/></span></span> <style>.product-image-container-5483767bfd45b2b37c { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-5483767bfd45b2b37c span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-5483767bfd45b2b37c span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/2023-beef-sired-progeny-from-dairy-cows">2023 Beef Sired Progeny from Dairy Cows</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Tara L. Felix, Bailey Basiel</span></div> </div> <div class="product-short-description">Penn State has completed the fourth year of a 4-year feedlot trial investigating the optimal genetics of beef-sired steers born to Holstein dams (beef × Holstein).</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_30784" data-container="product-list"> <a href="https://extension.psu.edu/predicting-calving-time-what-are-your-options" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-30784-67bfd45b2c129"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/5/3/53eb7c5a89f2b4eeefcf845874a77cb6.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/5/3/53eb7c5a89f2b4eeefcf845874a77cb6.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/5/3/53eb7c5a89f2b4eeefcf845874a77cb6.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Calving dairy cow; Photo Credit Adrian Barragan Penn State Extension"/></span></span> <style>.product-image-container-3078467bfd45b2c129 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3078467bfd45b2c129 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3078467bfd45b2c129 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/predicting-calving-time-what-are-your-options">Predicting Calving Time: What are Your Options?</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Adrian A Barragan, DVM, MS, Ph.D.</span></div> </div> <div class="product-short-description">New tools are being developed for accurately predicting calving time.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_30852" data-container="product-list"> <a href="https://extension.psu.edu/prediciendo-el-tiempo-del-parto-cuales-son-sus-opciones" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-30852-67bfd45b2ceee"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/6/f/6fe61642db550b679f441f20c8740767.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/6/f/6fe61642db550b679f441f20c8740767.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/6/f/6fe61642db550b679f441f20c8740767.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo Credit Adrian Barragan Penn State Extension"/></span></span> <style>.product-image-container-3085267bfd45b2ceee { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3085267bfd45b2ceee span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3085267bfd45b2ceee span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/prediciendo-el-tiempo-del-parto-cuales-son-sus-opciones">Prediciendo el Tiempo del Parto: ¿Cuáles son sus Opciones?</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Adrian A Barragan, DVM, MS, Ph.D.</span></div> </div> <div class="product-short-description">Publicado originalmente en Lancaster Farming</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_32227" data-container="product-list"> <a href="https://extension.psu.edu/cystic-ovarian-disorders-diagnosis-cause-and-treatment" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-32227-67bfd45b2dc69"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/b/3/b3755c145767f79acfe1008d674d562d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/b/3/b3755c145767f79acfe1008d674d562d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/b/3/b3755c145767f79acfe1008d674d562d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo Credit Penn State Extension"/></span></span> <style>.product-image-container-3222767bfd45b2dc69 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3222767bfd45b2dc69 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3222767bfd45b2dc69 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/cystic-ovarian-disorders-diagnosis-cause-and-treatment">Cystic Ovarian Disorders: Diagnosis, Cause and Treatment</a></h5><div class="product-attributes"> </div> <div class="product-short-description">Confusion Concerning the Diagnosis, Cause, and Treatment of Cystic Ovarian Disorders in Dairy Cows</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_49885" data-container="product-list"> <a href="https://extension.psu.edu/timed-ai-protocols-double-ovsynch" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-49885-67bfd45b2e9f6"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/b/7/b7eb43fc417cf0e63ed335694dfd05b8.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/b/7/b7eb43fc417cf0e63ed335694dfd05b8.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/b/7/b7eb43fc417cf0e63ed335694dfd05b8.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo credit Penn State Extension"/></span></span> <style>.product-image-container-4988567bfd45b2e9f6 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-4988567bfd45b2e9f6 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-4988567bfd45b2e9f6 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/timed-ai-protocols-double-ovsynch">Timed AI Protocols: Double Ovsynch</a></h5><div class="product-attributes"> </div> <div class="product-short-description">Double Ovsynch addresses some of the biggest challenges in reproductive management – heat detection, anovular cows, and conception rates.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_49909" data-container="product-list"> <a href="https://extension.psu.edu/timed-ai-protocols-presynch-ovsynch" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-49909-67bfd45b2f7b3"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/2/f/2f7bc4f017d358bb8d82a746433ee3df.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/2/f/2f7bc4f017d358bb8d82a746433ee3df.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/2/f/2f7bc4f017d358bb8d82a746433ee3df.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo credit Penn State Extension"/></span></span> <style>.product-image-container-4990967bfd45b2f7b3 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-4990967bfd45b2f7b3 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-4990967bfd45b2f7b3 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/timed-ai-protocols-presynch-ovsynch">Timed AI Protocols: Presynch Ovsynch</a></h5><div class="product-attributes"> </div> <div class="product-short-description">Presynch Ovsynch is a good, well-researched TAI protocol with proven success and significant advantages over Ovsynch alone.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_48664" data-container="product-list"> <a href="https://extension.psu.edu/timed-ai-in-dairy-cows-the-ovsynch-core" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-48664-67bfd45b30591"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/8/9/89e368b5824d95359192f50f862eb273.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/8/9/89e368b5824d95359192f50f862eb273.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/8/9/89e368b5824d95359192f50f862eb273.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo credit, Andrew Sandeen"/></span></span> <style>.product-image-container-4866467bfd45b30591 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-4866467bfd45b30591 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-4866467bfd45b30591 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/timed-ai-in-dairy-cows-the-ovsynch-core">Timed AI in Dairy Cows: The Ovsynch Core</a></h5><div class="product-attributes"> </div> <div class="product-short-description">Pair timed artificial insemination (TAI) with heat detection for a combined approach.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_28179" data-container="product-list"> <a href="https://extension.psu.edu/no-bull-crossbreeding-holsteins-with-beef" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-28179-67bfd45b31497"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/4/c/4c9557a859d771494b7690d06cf483d9.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/4/c/4c9557a859d771494b7690d06cf483d9.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/4/c/4c9557a859d771494b7690d06cf483d9.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo Courtesy of Pedro Carvalho, Penn State Animal Science"/></span></span> <style>.product-image-container-2817967bfd45b31497 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-2817967bfd45b31497 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-2817967bfd45b31497 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/no-bull-crossbreeding-holsteins-with-beef">No Bull: Crossbreeding Holsteins with Beef</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Tara L. Felix</span></div> </div> <div class="product-short-description">Crossbreeding Holstein cows with beef semen has been happening at a staggering rate.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_28147" data-container="product-list"> <a href="https://extension.psu.edu/crossbreeding-dairy-cattle-to-fit-the-beef-market" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-28147-67bfd45b322d2"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/1/9/193ed54a0c5ba13db879c83ef715d04d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/1/9/193ed54a0c5ba13db879c83ef715d04d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/1/9/193ed54a0c5ba13db879c83ef715d04d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Selection of quality bulls will help improve the growth and carcass performance of crossbred beef on dairy calves."/></span></span> <style>.product-image-container-2814767bfd45b322d2 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-2814767bfd45b322d2 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-2814767bfd45b322d2 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/crossbreeding-dairy-cattle-to-fit-the-beef-market">Crossbreeding Dairy Cattle to Fit the Beef Market</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Cheryl Ann Fairbairn</span></div> </div> <div class="product-short-description">Selecting beef bulls based on EPDs for carcass traits may be one of the first steps necessary to achieve acceptable results in a beef on dairy crossbreeding program.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_2857" data-container="product-list"> <a href="https://extension.psu.edu/choosing-an-activity-system-for-your-dairy" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-2857-67bfd45b33161"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/7/b/7b79845a78a598610a92444be3fdf933.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/7/b/7b79845a78a598610a92444be3fdf933.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/7/b/7b79845a78a598610a92444be3fdf933.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Cow with Heatime Pro activity and rumination collar"/></span></span> <style>.product-image-container-285767bfd45b33161 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-285767bfd45b33161 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-285767bfd45b33161 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/choosing-an-activity-system-for-your-dairy">Choosing an Activity System for Your Dairy</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Mathew M. Haan</span></div> </div> <div class="product-short-description">Activity monitoring systems can improve reproductive performance</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_5867" data-container="product-list"> <a href="https://extension.psu.edu/is-60-the-magic-number" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-5867-67bfd45b33f68"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/6/c/6ccbd46e56ed3a4dc9c2f2219832fb28.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/6/c/6ccbd46e56ed3a4dc9c2f2219832fb28.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/6/c/6ccbd46e56ed3a4dc9c2f2219832fb28.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo credit: Andrew Sandeen"/></span></span> <style>.product-image-container-586767bfd45b33f68 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-586767bfd45b33f68 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-586767bfd45b33f68 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/is-60-the-magic-number">Is 60 the Magic Number?</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen</span></div> </div> <div class="product-short-description">Factors to consider before shifting voluntary waiting period or dry period length.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_5231" data-container="product-list"> <a href="https://extension.psu.edu/cyclicity-in-dairy-cows-defining-the-issue" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-5231-67bfd45b34d8f"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/0/6/066ece1a94b59ac6961055a95894f199.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/0/6/066ece1a94b59ac6961055a95894f199.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/0/6/066ece1a94b59ac6961055a95894f199.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Cyclicity in Dairy Cows: Defining the Issue"/></span></span> <style>.product-image-container-523167bfd45b34d8f { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-523167bfd45b34d8f span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-523167bfd45b34d8f span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/cyclicity-in-dairy-cows-defining-the-issue">Cyclicity in Dairy Cows: Defining the Issue</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen</span></div> </div> <div class="product-short-description">Open cows that aren't cycling normally can hamper successful reproduction.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_17090" data-container="product-list"> <a href="https://extension.psu.edu/more-progesterone-please" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-17090-67bfd45b35b6e"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/9/4/94e70edbce29d2dd2918dfed92854420.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/9/4/94e70edbce29d2dd2918dfed92854420.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/9/4/94e70edbce29d2dd2918dfed92854420.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo credit: Andrew Sandeen"/></span></span> <style>.product-image-container-1709067bfd45b35b6e { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-1709067bfd45b35b6e span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-1709067bfd45b35b6e span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/more-progesterone-please">More Progesterone, Please</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen</span></div> </div> <div class="product-short-description">Progesterone is essential for normal reproductive cycling; it inhibits estrus and controls follicle growth. But, some high-producing dairy cows have too little in circulation.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_5230" data-container="product-list"> <a href="https://extension.psu.edu/a-long-term-mindset-for-reproductive-management" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-5230-67bfd45b369d8"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/7/f/7f10952b25d26f38e822df6c4f020f2c.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/7/f/7f10952b25d26f38e822df6c4f020f2c.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/7/f/7f10952b25d26f38e822df6c4f020f2c.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="A Long-Term Mindset for Reproductive Management"/></span></span> <style>.product-image-container-523067bfd45b369d8 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-523067bfd45b369d8 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-523067bfd45b369d8 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/a-long-term-mindset-for-reproductive-management">A Long-Term Mindset for Reproductive Management</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen, Andrew Sandeen</span></div> </div> <div class="product-short-description">Reproductive management is a critical component of a dairy operation, requiring a long-term mindset to be effective and successful.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_5010" data-container="product-list"> <a href="https://extension.psu.edu/systematic-breeding-programs" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-5010-67bfd45b377ab"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/f/8/f80ea7c9ac06f58ab191a776dba03e50.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/f/8/f80ea7c9ac06f58ab191a776dba03e50.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/f/8/f80ea7c9ac06f58ab191a776dba03e50.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Systematic Breeding Programs"/></span></span> <style>.product-image-container-501067bfd45b377ab { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-501067bfd45b377ab span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-501067bfd45b377ab span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/systematic-breeding-programs">Systematic Breeding Programs</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Michael L. O'Connor</span></div> </div> <div class="product-short-description">This article explains the value of systematic breeding programs for dairy cattle, how hormones are used, and factors important to achieving success.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_2026" data-container="product-list"> <a href="https://extension.psu.edu/minimizing-interservice-intervals" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-2026-67bfd45b3857a"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/i/m/image_579.jpg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/i/m/image_579.jpg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/i/m/image_579.jpg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Minimizing Interservice Intervals"/></span></span> <style>.product-image-container-202667bfd45b3857a { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-202667bfd45b3857a span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-202667bfd45b3857a span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="809"></span> Videos</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/minimizing-interservice-intervals">Minimizing Interservice Intervals</a></h5><div class="product-attributes"> <div class='attribute length'><span class='label'>Length </span><span class='value'>9:45</span></div> </div> <div class="product-short-description">This video defines interservice intervals and provides suggestions for how to improve them to maximize reproductive efficiency and dairy herd profitability.</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_33439" data-container="product-list"> <a href="https://extension.psu.edu/effects-of-repeated-opu-procedures-on-fertility-in-cattle" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-33439-67bfd45b392ea"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/0/d/0df6c80bee6106205945db8ca13eae14.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/0/d/0df6c80bee6106205945db8ca13eae14.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/0/d/0df6c80bee6106205945db8ca13eae14.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Photo Credit Andrew Sandeen, Penn State Extension"/></span></span> <style>.product-image-container-3343967bfd45b392ea { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-3343967bfd45b392ea span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-3343967bfd45b392ea span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/effects-of-repeated-opu-procedures-on-fertility-in-cattle">Effects of Repeated OPU Procedures on Fertility in Cattle</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen</span></div> </div> <div class="product-short-description">Do the benefits of OPS-IVF outweigh the potential risks?</div> </div></div></li> <li class="item product product-item"> <div class="product-item-info" id="product-item-info_5233" data-container="product-list"> <a href="https://extension.psu.edu/dealing-with-the-stubborn-corpus-luteum-cl-during-a-timed-ai-program" class="product photo product-item-photo" tabindex="-1"> <span class="product-image-container product-image-container-5233-67bfd45b3a07a"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/b/f/bfd557c20c2b87f64f9b6088e55635a4.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/b/f/bfd557c20c2b87f64f9b6088e55635a4.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/b/f/bfd557c20c2b87f64f9b6088e55635a4.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Dealing with the Stubborn Corpus Luteum (CL) During a Timed AI Program"/></span></span> <style>.product-image-container-523367bfd45b3a07a { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-523367bfd45b3a07a span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-523367bfd45b3a07a span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product details product-item-details"> <div class="product-type-wrapper"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> </div> <h5 class="product name product-item-name"><a class="product-item-link" href="https://extension.psu.edu/dealing-with-the-stubborn-corpus-luteum-cl-during-a-timed-ai-program">Dealing with the Stubborn Corpus Luteum (CL) During a Timed AI Program</a></h5><div class="product-attributes"> <div class='attribute authors'><span class='label'>By </span><span class='value'>Andrew Sandeen</span></div> </div> <div class="product-short-description">Some of the latest, greatest timed artificial insemination (AI) protocols have become pretty complex, but not without valid reasons.</div> </div></div></li> </ol></div> <div class="toolbar toolbar-products toolbar-bottom" data-mage-init='{"productListToolbarForm":{"mode":"product_list_mode","direction":"product_list_dir","order":"product_list_order","limit":"product_list_limit","modeDefault":"list","directionDefault":null,"orderDefault":"publish_date","limitDefault":25,"url":"https:\/\/extension.psu.edu\/animals-and-livestock\/dairy\/reproduction-and-genetics","formKey":"m8RvscjkjTwQMIqs","post":false}}'> <div class="pages"><strong class="label pages-label" id="paging-label">Page</strong> <div class="items pages-items" aria-labelledby="paging-label"><div class="item pages-item-previous"> <a class="action  previous disabled" href="https://extension.psu.edu/animals-and-livestock/dairy/reproduction-and-genetics?tab=default" title="Previous"><span class="label">Page</span> <span>Previous</span></a></div><div class="item pages-item-next"> <a class="action next " href="https://extension.psu.edu/animals-and-livestock/dairy/reproduction-and-genetics?p=2&tab=default" title="Next"><span class="label">Page</span> <span>Next</span></a></div><div class="pages-list"> <div class="item current"><strong class="page"><span class="label">You're currently reading page</span> <span>1</span></strong></div> <div class="item"><a href="https://extension.psu.edu/animals-and-livestock/dairy/reproduction-and-genetics?p=2&tab=default" class="page"><span class="label">Page</span> <span>2</span></a></div> </div></div></div> </div> </div></div></main> <div class="featured-content__wrapper"><div class="featured-content" data-content-type="products" data-appearance="carousel" data-autoplay="false" data-autoplay-speed="4000" data-infinite-loop="false" data-show-arrows="true" data-show-dots="false" data-carousel-mode="default" data-slides-to-show="4" data-slides-to-scroll="1" data-center-padding="90px" data-element="main" role="complementary"><div class="block-top-wrapper"><h2 class="block-title">You May Also Be Interested In...</h2><div class="widget-navigation"></div></div><div class="products-grid products wrapper"><ol class="product-items"> <li class="product-item"> <div class="product-item-info"><a href="https://extension.psu.edu/crossbreeding-dairy-cattle-to-fit-the-beef-market" class="product-item-photo"> <span class="product-image-container product-image-container-28147-67bfd45b44650"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/1/9/193ed54a0c5ba13db879c83ef715d04d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/1/9/193ed54a0c5ba13db879c83ef715d04d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/1/9/193ed54a0c5ba13db879c83ef715d04d.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Selection of quality bulls will help improve the growth and carcass performance of crossbred beef on dairy calves."/></span></span> <style>.product-image-container-2814767bfd45b44650 { width: 676px; height: auto; aspect-ratio: 676 / 448; } .product-image-container-2814767bfd45b44650 span.product-image-wrapper { height: 100%; width: 100%; } @supports not (aspect-ratio: auto) { .product-image-container-2814767bfd45b44650 span.product-image-wrapper { padding-bottom: 66.272189349112%; } }</style> </a> <div class="product-item-details"> <div class="product-type"><span class="product-type-icon" data-icon="801"></span> Articles</div> <strong class="product-item-name"><a title="Crossbreeding Dairy Cattle to Fit the Beef Market" href="https://extension.psu.edu/crossbreeding-dairy-cattle-to-fit-the-beef-market" class="product-item-link">Crossbreeding Dairy Cattle to Fit the Beef Market</a></strong> <div class="product-short-description">Selecting beef bulls based on EPDs for carcass traits may be one of the first steps necessary to achieve acceptable results in a beef on dairy crossbreeding program.</div></div></div> </li><li class="product-item"> <div class="product-item-info"><a href="https://extension.psu.edu/2023-beef-sired-progeny-from-dairy-cows" class="product-item-photo"> <span class="product-image-container product-image-container-54837-67bfd45b45879"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/d/5/d5bf2e7ad64dcdcd8ff8c38ba74e8698.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/d/5/d5bf2e7ad64dcdcd8ff8c38ba74e8698.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/d/5/d5bf2e7ad64dcdcd8ff8c38ba74e8698.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Beef sired calves from dairy dams are filling approximately 20% of the US fed cattle supply. 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Holstein).</div></div></div> </li><li class="product-item"> <div class="product-item-info"><a href="https://extension.psu.edu/artificial-insemination-technique-cattle" class="product-item-photo"> <span class="product-image-container product-image-container-37489-67bfd45b46aaa"><span class="product-image-wrapper"><img class="product-image-photo" srcset="https://extension.psu.edu/media/catalog/product/1/0/101fda405ff1f77e729f454109921d78.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=2 2x,https://extension.psu.edu/media/catalog/product/1/0/101fda405ff1f77e729f454109921d78.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448&dpr=3 3x" src="https://extension.psu.edu/media/catalog/product/1/0/101fda405ff1f77e729f454109921d78.jpeg?quality=80&bg-color=255,255,255&fit=bounds&height=448&width=676&canvas=676:448" loading="lazy" width="676" height="448" alt="Artificial Insemination Technique: Cattle"/></span></span> 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