Conclusion

Although it is likely that a commercially available equine FSH product will soon be available for use in embryo transfer programs in mares, there seems little prospect of a significant improvement in treatment protocols in the other farm species. The extent to which pituitary down-regulation by GnRH, using suitably long-acting forms of this hormone, may favorably influence superovulatory responses in farm animal species has yet to be adequately examined. As an alternative to current methods of superovulation, the possibility exists that advancements in oocyte recovery from the live animals by transvaginal ultrasound-guided aspiration or other methods used in conjunction with in vitro oocyte maturation, fertilization, and early embryo culture techniques may eventually permit embryos from farm animals to be produced more easily and cheaply in the laboratory.[16]

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