PREGNANCY FOLLOWING GAMETE INTRAFALLOPIAN TRANSFER IN THE MARE

Studies were conducted to develop the technique of gamete intrafallopi an tube transfer (GIFT) in mares using oocytes obtained by transvagina l ultrasound-guided follicular aspiration. Between 2 and 6 in vivo mat ured oocytes, collected by transvaginal follicular aspiration, were su rgically transferred into the oviducts of 8 artificially inseminated, reproductively sound mares. Two mares were confirmed pregnant based on ultrasound examination 12 and 17 days post-transfer Pregnancy resulti ng from possible fertilization of the recipient's oocyte was ruled out in each case by DNA fingerprint analysis.