Comparison of the embryo survival rate in heifers following artificial insemination, non-surgical blastocyst transfer or both.
In Exp. 1, embryo survival rates of 45 and 47% were recorded after artificial insemination and ipsilateral transfer respectively. In Exp. 2, pregnancy rates of 62 and 60% were recorded after artificial insemination and contralateral transfer to inseminated recipients respectively. In this experiment the contralateral transferred embryo survival rate was 44%. Transferred embryo survival was lower overall when donors and recipients were out of phase by 1 day than when exactly synchronous.
D000818:Animals; D002417:Cattle; D004624:Embryo Transfer; D004622:Embryo, Mammalian / Q000502:physiology*; D005260:Female; D007315:Insemination, Artificial / Q000379:methods; D011247:Pregnancy; D014184:Transplantation, Homologous