Breeding and Reproduction

Horse breeding from planning through foal care

Foaling a Premature Foal

Normal gestation in a mare lasts anywhere from 320 to 360 days. The average is about 341 days. A foal born at less than 320 days will display immature characteristics such as silky hair coat, overly pliable ears, weak or lax flexor tendons, and

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American Horse Cloning Project Successful

America’s first cloned horse turned six weeks old today, according to Texas A&M University (TAMU) researchers who partnered on the successful cloning venture with French scientist Dr. Eric Palmer of Cryozootech.

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Recovered Kingmambo Back to Breeding

Kingmambo, whose arthritic condition in his lower neck caused him to miss a key portion of the breeding season, is back covering mares at William S. Farish’s Lane’s End Farm near Versailles, Ky.


“He successfully bred mares the last four

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Bleeding of the Uterine Artery

There are two large arteries that supply the uterus with blood. One crisis that can occur is severe hemorrhage of one of these arteries into the surrounding tissue or abdominal cavity.

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Clone of Endurance Champion Thrives

Italian researchers today (April 14) announced that the first clone of a gelded horse is healthy and thriving. The Arabian colt is a genetic copy of U.S. endurance rider Valerie Kanavy’s world champion Pieraz and represents the ability of

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Champion Endurance Horse Successfully Cloned

As was reported earlier today, Pieraz, the two-time World Champion endurance gelding owned by Valerie Kanavy of Virginia, was successfully cloned in Italy by Eric Palmer,DVM of the Italian laboratory LTR-CIZ, in collaboration with Cryozootech.

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CEM Confirmed in British Horse

The United Kingdom’s Department for the Environment, Food, and Rural Affairs (Defra) announced the detection of a contagious equine metritis (CEM) carrier stallion  in the Frome area of Somerset (in southwest England) on April 30. Officials

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Management of Pregnant Mares

As breeding season begins, James Brendemuehl, DVM, PhD, Dipl. ACT, an equine veterinarian at the University of Illinois Veterinary Teaching Hospital in Urbana, is often consulted about broodmare health.


Brendemuehl explains that

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Additional Horse at Maryland Farm Shows Signs of EHV-1

(edited from press release)


Facility managers who are handling a neurologic equine herpesvirus type-1 (EHV-1) incident at a Columbia, Md. horse stable (Columbia Horse Center, CHC; read archived stories) reported April 7 that an

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Equine Herpesvirus Type-1 Confirmed in Maryland

The Maryland Department of Agriculture (MDA) received confirmation yesterday (April 5) that equine herpesvirus type-1 (EHV-1) was the cause of equine illness at the Columbia Horse Center in Columbia, Md. The virus, which causes upper respiratory

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Neurologic Herpesvirus in Canada and Pennsylvania

The neurologic form of equine herpesvirus type-1 (EHV-1) has been detected in horses in two additional areas of North America–Nova Scotia, Canada, and Meadowlands, Pa. At least four affected horses were put down (three in Canada and one in

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Breaking News: Neurologic Herpesvirus Strain Mutation

New equine herpesvirus type-1 findings from a research collaboration between George Allen, PhD, professor in the Department of Veterinary Science at the University of Kentucky’s Gluck Equine Research Center in Lexington, and Nicholas

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Respiratory Disease Seminar

Influenza, equine herpesvirus, and strangles were highlighted by Bonnie Rush, DVM, MS, Dipl. ACVIM, professor and section head of equine internal medicine at Kansas State University, at a Feb. 4 seminar sponsored by Fort Dodge Animal Health in

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Foals of Non-Milking Mares

I have a gorgeous palomino Quarter Horse mare that I would like to breed, but I have a problem. She ran into barbed wire as a yearling and she cannot produce milk as a result of that accident. The man who owned her before bred her twice, and he

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Settling Down: Reproductive Problems in Performance Mares

Let’s say you’ve got a great performance mare you’d like to breed. But getting her in foal might not be as simple as swapping arena for breeding shed. Mares in performance careers can sometimes be hard to breed because these mares are under more

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