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

Placentitis–General Information

The single most important cause of premature delivery of a foal is placentitis. It accounts for nearly one-third of late-term abortions and fetal mortality in the first day of life.

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Placentitis–Caring for the Foals

During the foaling season, Bain said, veterinarians are frequently called upon to deal with a foal that is the product of a mare with placentitis. These foals, he said, can range from being extremely early–300 days–with small size and organ function incompatible with life to a full-sized foal nearer to full-term gestation with minimal effects.

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AAEP Convention 2004: Horseman’s Day–Dentistry

Mary DeLorey, DVM, owner of Northwest Equine Dentistry in Washington, began Horseman’s Day at the 50th annual American Association of Equine Practitioners (AAEP) Convention in Denver, Colo., Dec. 4-8, 2004, with a presentation titled “Everything You Wanted to Know About Equine Dentistry.” “Just a float isn’t enough anymore,” she told her listeners. “Comprehensive dental care is needed.” She said

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AAEP Convention 2004: Horseman’s Day–Performance Horse

At Horseman’s Day at the 50th annual American Association of Equine Practitioners (AAEP) Convention in Denver, Colo., Dec. 4-8, 2004, Sally Vivrette, DVM, PhD, Dipl. ACVIM, of Triangle Equine Veterinary Services in Cary, N.C., discussed strategies for keeping the performance horse healthy and fit.

“Maintaining a performance or pleasure horse represents a substantial investment of time and

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Newborn Foals: Routine and Emergency Care

The best chance to improve the survival rate of a newborn foal, she said, is adequate advance disease prevention and planning. The disease prevention includes a comprehensive vaccination program, Zimmel told her listeners.

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AAEP Convention 2004: Horseman’s Day–Cushings

Christy Malazdrewich, DVM, MVSc, PhD, Dipl. ACVIM, assistant clinical professor at the University of Minnesota, discussed metabolic problems at Horseman’s Day at the 50th annual American Association of Equine Practitioners (AAEP) Convention in Denver, Colo., Dec. 4-8, 2004. She gave clear-cut descriptions of two baffling conditions–Cushing’s disease and metabolic syndrome. She opened with this

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AAEP Convention 2004: Horseman’s Day–Equine Motor Neuron Disease

Ken Bedell, DVM, of Cornell University, addressed one of the newer maladies that has shown up in the horse world–equine motor neuron disease–at Horseman’s Day at the 50th annual American Association of Equine Practitioners (AAEP) Convention in Denver, Colo., Dec. 4-8, 2004. He characterized the affliction as any disease that targets the nerves that coordinate the muscle structure, such as

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Mucus Accumulation and Effect on Performance

The results of this study suggest that moderate to severe tracheal mucus accumulation is a risk factor for poor racing performance in Thoroughbred horses. Indeed, horses with little to no tracheal mucus placed nearly twice as well in a race compared with horses with moderate to large amounts of tracheal mucus.

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Furosemide (Salix) Effect on Racing Performance

Overall, Standardbred mares given furosemide, Morley said, finished 0.18 seconds faster than untreated mares; treated geldings finished 0.05 seconds faster than untreated geldings, and treated stallions finished 0.11 seconds faster than untreated stallions.

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AAEP Convention 2004: Sports Medicine II–EIPH/Race Times

K.W. Hinchcliff, BVSc, PhD, Dipl. ACVIM, visiting fellow at the University of Melbourne in Australia, at the 50th annual American Association of Equine Practitioners (AAEP) Convention in Denver, Colo., Dec. 4-8, 2004 discussed the effect of EIPH on race times when furosemide was not administered. The study involved examinations of horses competing in competitions where furosemide is not

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Sacroiliac Joint Pain

There were a couple of take-home messages from Dyson’s presentation. One was that sacroiliac joint problems can dramatically compromise a horse’s ability to perform, and the other was that using an analgesic injection can be a valuable technique in diagnosing sacroiliac problems.

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Fighting Invaders

The immune systems of humans and horses are what keep us alive. Without a properly functioning immune system, disease would run rampant, with serious illness and death being the ultimate outcome.

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