The Effect of Progestin Source on Some Reproductive Performance in Akkaraman ewes

This study was conducted to determine the effect of progestin source on some reproductive performance, lamb birth weight and mortality rate in Akkaraman ewes. A total 40 sheep breed with similar body (51.3 ± 1.5 kg) at least two parturitions were used as experimental animals. In all ewes, intramuscular injection PGF2α (2.5 mg) administered 96 hours before estrus synchronization obtain corpus luteum regression. The ewes allocated randomly into groups according ages. Estrus first group (n=20) synchronized an intra-vaginal CIDR device containing 0.30 g natural progesterone. second sponge 30 mg flugestone acetate (FGA). withdrawn following 12 days 600 IU PMSG injected intramuscularly. After 24 from injections, introduced rams recorded. There no significant differences between synthetic progesterone applications terms rate, gestation duration Additionally, rates both groups. However, application increased multiple (P