Superovulation following follicular synchronization with GnRH at random stages of the oestrous cycle in heifers: oocyte competence and in vitro embryo production
Abstract:ABSTRACT:The objective of this study was to develop a superovulatory program based on the synchronization of follicular waves with GnRH which could be applied regardless of the stage of the oestrous cycle. In this experiment, GnRH was given to 30 heifers in lactation between Days 0 and 7 (n = 13), 8 and 12 (n = 12), 13 and 16 (n = 5) of the oestrous cycle. Twenty-four heifers were used as controls and did not receive any GnRH. All follicles ≥ 6 mm were punctured 4 days after GnRH treatment in treated animals a… Show more
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