Effect of Administration of Gonadotropin releasing hormone on the Superovulatory Response of Bos Indicus Heifers

Superovulation in cattle results in variable and unpredictable response in ovulations rates and production of transferable embryos. Eighteen Bos indicus heifers were administered with GnRH analogue at a fixed time after prostaglandin administration in FSH superovulatory regimen. There was no significant difference between groups in superovulatory response measured as total number of ova/embryos and fertilized embryos recovered. It is likely that administration of exogenous GnRH at the onset of oestrus could produce better results than when administered at a fixed time.