Large scale management of camels for embryo transfer

摘要

Embryo Transfer has gained particular attention in racing camels. For a large scale management of embryo transfer donors and recipients need to be efficiently synchronised. Donors are usually superovulated using FSH administered in descending dosestwice daily over a period of 7 days, after a 14 days progesterone treatment and followed by a prostaglandin injection and mated on day 9 and 10. GnRH (20 #mu#g) is given if the mating does not last more than 5 minutes. In 1998, 95 percent (21/22) of thecamels receiving FSH responded with production of 5 or more follicles and 90 percent (19/21) ovulated postmating. Recipients are prepared in a ratio of 1:4 and administered a progestagen for a period of 10 days followed by 1500 I.U. eCG, PG and 1300 IU of hCG (when an ovulatory follicle is detected). Using such regimes 92 percent (109/118) recipients developed a follicle and ovulated. The current, embryo recovery rates per donor are 7.6 and 5.6 with eCG and FSH, respectively. Management of all facets ofembryo transfer are discussed relative to their impact on handling larger number of donors and recipients while maintaining pregnancy rates. Pregnancy rates for 1998 were 63%.