synchronized the Kıvırcık ewes using pessaries containing progesterone and superovulated them with different doses of PMSG (500 and 700 IU) during breeding season. Prolificacy rates were 158% and 196% in the 500 and 700 IU groups, respectively. In our study, doses of 500 IU were found more effective. Similarly, estrus and fertility responses of 97% and 66%, respectively, were observed in a study with Pelibuey and Blackbelly ewes when 500 IU PMSG were applied at sponge removal Rosado et al. [13]. In our study, doses of 300 IU found more effective with a fertility rate of 86.2%. It was thought that fertility parameters could be affected by different treatment seasons such as anestrus, breeding or transition season. Algerian Ouled Djellal sheep have a relatively strong performance of reproduction and a percentage of fertility, fecundity and prolificacy reported about 91%, 105% and 115% [14].