What is the procedure for embryo transfer?

Embryo transfer technology operating procedures: Donor cattle (high-yielding cows) - synchronized estrus (intramuscular injection of PG 0.4 mg per cow) - supernumerary egg extraction (using FSH 320-400 units divided into 8- 9 equal intramuscular injections (PG 0.4 mg) on ??the morning and evening of the third day - artificial insemination - embryo flushing - embryo collection - embryo freezing - embryo transfer. Recipient cows (cows with average milk production, Qinchuan cattle) - estrus at the same time (0.4 grams of PG per cow) - intrauterine environment inspection - embryo transfer (embryo thawing) - pregnancy inspection - calving. Artificial insemination technology operating procedures: The selection of recipient cattle must be nutritious, in good health, and free of reproductive organ diseases. In the same period of estrus, the PG secondary injection method is generally used: cloprostenol is injected twice 11 days apart, 0.4 mg per head. The rectal examination method checks the development of ovarian follicles in the uterine environment to determine whether artificial insemination can be accepted. The next step is to thaw the frozen semen, inject it, and inject it into the uterus until conception and calving.