Abstract: Historically, estrus synchronization has been promoted as a labor saving tool for those producers who want to capitalize on the superior genetics available through use of AI. However, the labor saving aspect is peanuts compared to the economic returns available when estrus synchronization is used as a reproductive management tool. The aim of this study was to comparison of the two different methods: select synch and estrous synchronization by PGF_2α. In this study, about 68 newly parturited cows were examined about 25 days after their parturition for clean test. About 45 days after parturition cows were divided into 2 groups and prepared for artificial insemination. Animals of group 1 (36 cows) were inseminated by select Synch Method. Animals of group 2 were treated as estrus synchronization. Based on data obtained from Chi-square test, it has been revealed that there is no significant difference between two groups (p>0.05).