Embryo transfer in cattle: an evaluation of the current situation.
A technique for the transcervical recovery of ova in cattle is described. The donors recipient pool consisted of 122 cows of different ages and 4 different breeds. Of these 102 cows were superovulated. For recovery of ova an apparatus consisting of a metal catheter glued to the inside of a 3-way Foley catheter was used. The technique used for embryo transfer was basically the same as for collecting the embryos. The 102 donors yielded at slaughter a total of 956 corpora lutea i.e. an average of 9,4 per cow. Of the ova released 294 or 30% were recovered on transcervical flushing of the uterus. 40% of the inovulated cows conceived. The future development of inovulation in cattle is discussed on the basis of the results recorded and on those previously documented.
D000818:Animals; D002417:Cattle; D004625:Embryo, Nonmammalian / Q000637:transplantation*; D005260:Female; D006064:Gonadotropins, Equine / Q000008:administration & dosage; D010062:Ovulation Induction / Q000662:veterinary; D013480:Superovulation / Q000187:drug effects; D014184:Transplantation, Homologous / Q000295:instrumentation / Q000379:methods / Q000662:veterinary*
D006064:Gonadotropins, Equine