Successful transfer of the bovine embryo and selection of the recipient

摘要

Successful collection of the bovine embryo only accounts for half of the process required for the production of a live calf from that embryo. Following recovery of a viable embryo, the second vital step in the process involves the transfer of the carefully collected and stored embryo into an appropriate recipient animal. Therefore, in addition to the contributions of the donor animal, the recipient of the donor embryo has an equally important role to play in the process of hastening the distributionrate of enhanced bovine genetics. To obtain the best conception rates it requires careful selection, preparation, examination and implantation of the recipient. All of these stages require specific criteria to be followed and their evaluation can be greatly enhanced with the inclusion of the ultrasound scan in the examination routine.