1998 marked a very special event in the history of the Missouri Fox Trotting horse. The first foal conceived by embryo transfer was born on Dreamaker Farms at Nianuga, Missouri. Click on Images to enlarge. To harvest embryos from mares of exceptional quality that for many reasons may not be able to carry a foal to term. To harvest embryos from show mares or young mares while they continue showing or growing.
Timing is everything in the embryo transfer procedure.
Ideally, one selects the donor mare and at least two recipient mares. All three mares have to be cycling on the same schedule. Usually this is achieved by putting all three mares on Regumate for 10 days and giving a shot of Estrumate on the 11th day. The donor mare is bred when she comes into heat every other day until she goes out of heat. All mares are checked by ultra sound to determine precisely when they ovulate.