The aim of the present study was to study the effect of parity on the efficacy of Ovsynch protocol in buffalo. Out of 686 buffalo heifers (HE) and 273 cows (BC), 8 heifers and 9 cows were used to monitor and evaluate ovarian follicular dynamics and serum progesterone profile during this protocol while the rest of animals were used to compare the conception rate following the application of this...