A study comparing the success rate of fresh versus frozen semen samples when used in embryo transfer in horses

Abstract

This paper is written about a study taken place to investigate and compare the success rate of fresh semen versus frozen semen when used in embryo transfer in horses. To do this we looked at a group of both registered veterinarians carrying out ET regularly throughout the breeding season in Ireland alongside owners of both donor and recipient mares. By comparing the amount of mares inseminated with either fresh or frozen semen and those who had an embryo flushed on day 7 and transferred to a recipient mare who intern was confirmed in foal via rectal ultrasonography minimum day 14 of embryo lifecycle we can in fact improve the success rate of future ET.