Les Sellnow

Les Sellnow was a prolific freelance writer based near Riverton, Wyoming. He specialized in articles on equine research, and operated a ranch where he raised horses and livestock. He authored several fiction and nonfiction books, including Understanding Equine Lameness and Understanding The Young Horse. He died in 2023.

Articles by: Les Sellnow

Budget Barn Design

Small Farm Efficiency

People in increasing numbers are seeking limited acreage where they can enjoy the rural way of life, including horses. For some the small farm must at least be operated efficiently in order to be affordable.

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Do Radiographic Abnormalities Impact Equine Performance?

Bone Chips in Joints

Bone chips in a horse’s movable joints can compromise the animal’s ability to perform, and, in some cases, they can even end the animal’s career. However, not all bone chips are created equal.

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Grazing Horses

The Equine GI Tract: Down the Hatch

If the horse’s gastrointestinal (GI) tract were a highway, no self-respecting engineer would take credit for its design. Take a trip along the highway of the equine GI tract to learn more about how your horse digests his food.

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Learning About Horses (Stable Studies)

What do you want to learn about horses? There is a plethora of programs available to those interested in the equine industry.

There was a time when an individual seeking a horse-related vocation had few choices for equine

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Uterine Inflammation, AAEP 2008

The mare’s reproductive tract is similar to the respiratory tract in that both have mucosal immune systems. In both areas, the mucosal immune system is capable of producing excessive quantities of mucus when persistently irritated. Robert C.

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R. Equi and Extrapulmonary Disorders, AAEP 2008

Rhodococcus equi bronchopneumonia is a prevalent cause of disease in foals, said M. Keith Chaffin, DVM, MS, Dipl. ACVIM, a professor of medicine at Texas A&M University’s vet school, at the 2008 American Association of Equine Practitioners convention, which was held Dec. 6-10 in San Diego, Calif.

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Building Immunity

The foal’s immune system is almost a blank slate at birth; researchers are figuring out how to best protect horses as they grow.

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Competent Horse Care

Timely deworming, immunizations, and farrier work are only part of the equation. Ongoing observation is required to ensure your horse is properly fed and cared for.

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Diazepam Levels in Foals

The combination of ketamine and diazepam (Valium) commonly comprise anesthesia agents in horses. However, she added, many surgeons steer away from the combination when anesthetizing mares that are suffering from dystocia (difficult birth).

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Embryo Transfer in Chronically Infertile Mares, AAEP 2008

Embryo transfer is a management procedure for producing foals by mares that either are in training or have reproduction problems. In some cases the goal is to allow young performing mares to reproduce while continuing their careers. In other cases the donor mare might be afflicted with a reproductive problem, such as chronic uterine infection or a cervical laceration, that does not allow her

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Breeding The Problem Mare With AI

“In my opinion, a mare that fails to become pregnant by AI with good semen quality and does so by natural cover without human intervention is an example of poor or inadequate breeding management by the personnel performing the AI,” said Samper.

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Frozen Semen Use in Barren Mares

To rectify the lack of information problem, Barbacini and colleagues launched a study to determine the fertility of barren mares inseminated with either fresh or frozen-thawed semen. Researchers investigated the effects of mare age and uterine fluid

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Immunostimulants for Foals

A product that could stimulate the immune systems of newborn foals to better fight infection of Rhodococcus equi would be very beneficial, said Steeve Giguère, DVM, PhD, of the University of Florida, at the 2008 American Association of Equine

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DNA Testing for Twins (AAEP 2008)

Tissues from both the recipient and donor mare, as well as from the two stillborn foals, were submitted for microsatellite analysis. The analysis verified that the foals had identical genotypes and resulted from the transferred embryo.

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