GNRH INDUCES OVULATION OF A DOMINANT FOLLICLE IN PRIMIPAROUS DAIRY COWS UNDERGOING ANOVULATORY FOLLICLE TURNOVER

摘要

This trial examined the effect of an injection of gonadotropin-releasing hormone (GnRH) administered approximately 3 weeks postpartum on the induction of a luteinising hormone (LH) surge and ovulation of large (over 10 mm) follicles in the ovaries of lactating primiparous dairy cows likely to have an extended postpartum period of anovulation.