Synchronization of Nellore Jodipi ewes by different doses of PGF2α

Nellore Jodipi cyclic ewes were synchronized to assess the effectiveness of two different doses of double PGF2á (Cloprostenol sodium) @ either 125 or 250 μg with 9 d interval in Groups I and II based on the estrus response and fertility rate after intra cervical inseminations at 60 and 72 h after 2^nd PGF2α. The estrus response (%), onset of estrus (%), duration of estrus (h) and intensity of estrus in ewes synchronized by PGF2α were 80.95 and 85.71; 50.94+3.12 and 48.00+3.40; 24.35+1.41 and 28.22+1.15 and 6.76+0.29 and 6.83+0.34 in Groups I and II, respectively. The conception rate based on 25 d non return rate was 85.71 and 80.95% with an overall lambing rate of 71.43 and 66.67% in Group I and II, respectively. The studyrevealed that the synchronization response among the treated ewes by 125 μg of PGF2á was slightly lesser with higher lambing rate than 250 μg of PGF2α.