The technical advances in equine reproduction have made it possible to preserve and promote the superior genetics of outstanding individual horses that only a few years ago were lost to the population. First artificial insemination (AI), then embryo transfer (ET) and now intracytoplasmic sperm injection (ICSI) have added to the list of options we can use to salvage foals from both compromised mares and stallions whose semen is of poor quality or in short supply. Thru ICSI, our goal is to produce foals from mares that have a uterus that can no longer produce an embryo or to salvage eggs from a mare that just died. Secondly, thru ICSI, our goal is to maximize the use the last few straws of semen from a deceased stallion by using only one sperm cell to produce a foal.

Test Tube Horses

The technology of Intracytoplasmic Sperm Injection (ICSI), used in human fertility clinics has now been applied to horses. The miracle of producing a foal from an infertile mare or salvaging many foals from one straw of semen from a deceased stallion are now possible. What originally began as academic research has now reached the point of commercial application in a few private veterinary hospitals specializing in equine reproduction.

Colorado Sate University and Texas A&M are the primary centers of research in equine reproduction. Due to the investment in laboratory facilities, equipment and supplies, which can easily reach several hundred thousand dollars, in addition to the learning curve of several years, there are only a couple of private veterinary hospitals offering these services. Dr. Rob Foss at Equine Medical Center in Columbia, Missouri and Dr. Rick Beck at IN Foal, Inc. in Hemet, California are the two hospitals that have produced several live foals by this procedure.

After collection an oocyte (horse egg) from a follicle on the mares ovary, a microscope with micromanipulators is used to mechanically inject one sperm cell into the egg. After 8 days in the incubator, the embryo is transferred into the uterus of a recipient mare (serrugate mother) that will give birth 11 months later. The application of this cutting edge technology has produced foals from outstanding genetic individuals that otherwise would have been lost to the gene pool.