In nature, mares have a high fertility/ conception rate since they are continually with a stallion who teases and breeds them at the best times. But few domestic horses are bred under natural conditions in pasture harems, and broodmare managers
Teasing mares can be a time-consuming and boring procedure, but it is essential if one is to detect when a mare is in estrus. Unfortunately, all mares do not react to teasing in the same manner, so one approach doesn’t suit all.
A good teasing program is essential for insuring success in an equine breeding program. Without it, breeding can become a hit-and-miss proposition, despite the sophisticated tools that are available to veterinarians and breeding technicians.