Hormonal therapy is often used in performance mares to prevent estrous behavior. A wide variety of options are currently available, including hormonal, nonhormonal, and immunologic methods to modulate estrous behavior in mares.
Source: EQUINE BREEDING MANAGEMENT AND ARTIFICIAL INSEMINATION
Rates of ovarian quiescence in foaling mares or reports of ovarian failure are low. In foaling mares, lactational anestrus may be behavioral, related to fescue endophyte toxicosis or physiologic factors.
Subclinical valvular heart disease is relatively common in middle-aged to older horses and is caused primarily by thickening of the valves from myxomatous degeneration. Aortic and mitral valve insufficience are discussed.
Lexington, Ky. -- Veterinarians who specialize in the care of racehorses will answer questions on that topic during November as part of the American Association of Equine Practitioners' (AAEP) "Ask the Vet" online discussion.
