TY - JFULL AU - B. Safsaf and M. Tlidjane and B. Mamache and M. A. Dehimi and H. Boukrous and Aly A. Hassan PY - 2014/1/ TI - Effect of Age and Physiological Status on Some Serum Energy Metabolites and Progesterone in Ouled Djellal Breed Ewes in Algeria T2 - International Journal of Animal and Veterinary Sciences SP - 1355 EP - 1361 VL - 8 SN - 1307-6892 UR - https://publications.waset.org/pdf/9999913 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 96, 2014 N2 - The aim of this study is to determine the effect of age and physiological status on progesterone and energy metabolism of Ouled Djellal (O.D) breed ewes. 40 healthy ewes were divided into two groups, primiparous and multiparous, with 20 ewes in each group. The body weights (BW) (Kg) were 46.6 ± 4.20 and 59.2 ± 3.02, and consuming less 25 to 30% of their basal energetic requirements. The values of serum glucose, triglycerides and cholesterol were lower in pregnant than in non-pregnant ewes. The high to very high significant differences were found during the 15th week of pregnancy for glycaemia and triglyceridemia respectively. Concerning serum progesterone, a very highly significant difference (p<0.001) was noted in the pregnant group, and the values were higher in MP than in PP. After lambing, the triglyceridemia values were slightly lower in primiparous than in multiparous pregnant ewes. In order to prevent imbalance during critical periods of reproduction, we can use the serum metabolic profile. ER -