Effect of Superovulation Protocol and Embryo Flushing on Ovulation Results of Cattle

Follicle stimulating hormone(FSH) from Czech Republic,Australia and China was used for superovulation using two ways of FSH+PG and FSH+CIDR,the number of available embryos by three FSH products was similar(P0.05)(5.43, 5.33 and 4.80,respectively);and recovered embryos and available embryos from cows treated with two injection of progesterone or CIDR showed no significant differences(P0.05).When the embryos were collected,the recovery rates of embryos were 102% and 98%(P0.05) for injective embryo flushing without anaesthesia and traditional dripping embryo flushing after anaesthesia,there was no significant difference(P0.05) in the number of available embryos between multiparous and primiparous cows(5.27 vs 5.17).