a study, on the effects of various doses of PMSG in the ewes on oestrus and reproductive performance, the data about oestrus rate and reproductive performance determined that PMSG did not have a statistically significant effect at different doses and the number of lambed ewes was found to be statistically significantly high in the control group than the groups administered with progestogen-containing sponge and different doses of PMSG (Unal et al., 2002). At the end of a research, it was observed that uniform lambs could be obtained in the marketing period and that producers were greatly interested in the application (Karaca and Cemal, 2002). In the study, where they investigated the effects of use of progesterone and different doses of PMSG in Kivircik ewes on oestrus control and reproductive performance, Koyuncu et al.