Sex preselection of stallion spermatozoa. This study will develop novel techniques that will maintain and optimise the fertility of sex-sorted stallion semen before and after processing through a flow cytometer. Ultimately, spermatozoa obtained from ejaculation or from the testes sperm storage site (epididymes) at the time of castration will be sorted into X- (female) or Y- (male) populations and used to inseminate mares and thus, enable horse breeders to predetermine the sex of their foal at th ....Sex preselection of stallion spermatozoa. This study will develop novel techniques that will maintain and optimise the fertility of sex-sorted stallion semen before and after processing through a flow cytometer. Ultimately, spermatozoa obtained from ejaculation or from the testes sperm storage site (epididymes) at the time of castration will be sorted into X- (female) or Y- (male) populations and used to inseminate mares and thus, enable horse breeders to predetermine the sex of their foal at the time of insemination. The introduction of sex-sorted semen into the Australian horse industry (worth some $6.2 billion) will ensure that Australia leads the world in equine reproductive technology.Read moreRead less