Synchronization of Estrous Cycle With Vaginal Sponges in Barbary Breed of Ewes

A total of one hundred Barbary Libyan ewes were selected and were divided as Group T and C (n= 50). The ewes in group T were inserted with intravaginal sponges of progesterone for 12 days. At the time of removal of sponges; 500 IU of eCG was injected intramuscularly. The ewes were mated with fetile rams after twelve hours of removal of vaginal sponges. Significantly higher lambing rate was recorded in treatment group (90%) of ewes than the control group of ewes (78%). Likewise the twining rate was significantly higher in the treatment group (44.4%) than the control group of ewes (20.5).