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Supporting Your Horse's Immune System

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Rhodococcus equi Pneumonia: Rethinking Treatment to Fight Resistance
Skill, Science, and Sensitivity: Unpacking Horse Training Misconceptions
Rehabilitating the Neurologic EPM Horse
Building a Balanced Diet for Your Mare and Foal
Joint Health Matters: Top Therapies for a Successful Season
The Abscess Ruptured, But My Horse is Still Lame. Now What?
Understanding Horse Aggression
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Case Study: Rehabilitating the Neurologic EPM Horse

Mare Colostrum Quality Effects on Foal IgG Levels and Weight

Dysphagia in Newborn Foals

Strangles Case Confirmed at Maryland Boarding Facility

Large Colon Volvulus in the Postpartum Mare

Equine Innovators: Improving Joint Health in Horses With Orthobiologics

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Managing Your Performance Horse’s Joints

April 9, 2025

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March 20, 2025

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Richard D. Holder, DVM

Richard D. Holder, DVM, graduated from the University of Texas in 1969 and Texas A&M College of Veterinary Medicine in 1972. He has been an equine practitioner at Hagyard-Davidson-McGee Associates, PSC, in Lexington, Ky., since 1974 with emphasis on reproduction, and he currently holds the office of treasurer for the firm. In the past several years, he has been instrumental in developing the technique for equine ultrasonic fetal sex determination and has given numerous presentations on this subject. Holder is the resident owner of Offutt-Cole Farm in Midway, Ky.

Articles by: Richard D. Holder, DVM

Filly or Colt? Find Out Before It’s Born

Richard D. Holder, DVM January 1, 2001

Knowing the gender of a foal before it is born helps the horse owner or breeder better manage several different aspects of the horse business. This new management tool is very safe, accurate, and can be incorporated into most breeding programs

Equine Fetal Sex Determination

Richard D. Holder, DVM April 1, 1999

Knowledge of a fetus’ sex enables the horse owner or breeder to manage several different aspects of his or her horse business better. For example, the value of a foal frequently is influenced by its gender, depending on its sire or dam.