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Cover Story

Supporting Your Horse's Immune System

What does it take to optimize the equine immune response and fight off disease?

Also in this Issue

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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Florida Mare Tests Positive for Strangles

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EHV Case Confirmed in Utah

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Managing Your Performance Horse’s Joints

April 9, 2025

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March 20, 2025

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How Much Does It Cost to Own a Horse?

Dealing With Equine Colic: Here are 33 Do’s and Don’ts

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Everything You Need to Know About Laminitis in Horses

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Stallion Fertility

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Could Air-Dried Semen Produce Equine Embryos?

Christa Lesté-Lasserre, MA May 8, 2016

Researchers determined that air-dried sperm can be kept for up to four weeks before being used to produce an embryo.

Scent’s Influence on Breeding Stallions

Christa Lesté-Lasserre, MA April 15, 2016

Study stallions bred quickest if they had the scent of urine from mares in heat on their nostrils.

Urine Trouble: Freezing Contaminated Stallion Semen

When Nature Meets Science: Breeding With Frozen Semen

Natalie DeFee Mendik, MA April 14, 2016

What you need to know and expect when using this breeding method.

Stallion Collection Schedules Affect Mare Pregnancy Rates

Study: Stallion Semen Integrity Varies by Season

Christa Lesté-Lasserre, MA April 6, 2016

The month of the year appears to have a significant impact on several parameters of collected semen in stallions.

Thoroughbred mare and foal, foal exercise,

Sport Horse Reproduction: Challenges and Solutions

Etta Agan Bradecamp, DVM, Dipl. ACT, ABVP February 29, 2016

Equine reproduction specialist Dr. Etta Bradecamp overviews obstacles related to breeding performance mares and stallions.

Stallion Reproductive Disorders: Focus on Hemospermia

Stacey Oke, DVM, MSc February 13, 2016

Reproductive tract injuries can result in the presence of blood in a stallion’s ejaculate, called hemospermia.

Researchers Use GPS to Study Mare and Foal Movement

Practical Reproduction Studies of 2015

Alexandra Beckstett February 2, 2016

A recap of studies on topics ranging from prostaglandin treatment of mares to semen quality in stallions.

Researchers Study Light’s Impact on Young Thoroughbreds

Katie Navarra December 6, 2015

Longer light exposure appears to have numerous effects, from prompting coat shedding to increasing bone mineral density.

Maximizing Cooled and Frozen Semen’s Fertility

Erica Larson December 1, 2015

Learn about the steps vets and stallion managers can take to help improve the quality of cooled and frozen semen.

The Carrier Stallion's Role in Disease Transmission

What Impacts Stallions’ Sperm Output?

Erica Larson November 27, 2015

Understanding which factors hinder sperm production can help managers and vets take steps to help improve fertility.

Questions to Ask Before Breeding With Frozen Semen

World Equine Veterinary Association November 7, 2015

Frozen semen offers many advantages, but it is important to understand that not all frozen semen is the same.

Readers Share Cold-Weather Horse Care Survival Tips

Linseed Oil, Vitamin E Help Improve Cooled Semen Quality

Christa Lesté-Lasserre, MA October 31, 2015

Adding these supplements to stallions’ diets could help counteract the phenomenon of lower sperm quality in the winter.

Thinking Outside the Breeding Shed

Marian Carpenter June 17, 2015

Infertile mare? Deceased stallion? No problem! Equine reproduction is now high-tech enough to overcome these hurdles.

Some Stallion Voices More Attractive to Mares Than Others

Stacey Oke, DVM, MSc June 4, 2015

Stallions with low-pitched whinnies were more fertile and more attractive to mares than those with high-pitched voices.

Researchers Pinpoint Additional Laminitis Risk Factors

The Equine Genetic Toolbox

University of Kentucky College of Agriculture, Food, and Environment May 27, 2015

Genetic testing reveals differences in an individual’s DNA that result in traits from coat color to muscle function.

Cooled-Shipped Sperm Quality’s Effect on Fertility

Alexandra Beckstett May 1, 2015

One vet said sperm quality thresholds his team identified can help practitioners make better breeding decisions.

1-NANRIC_ULTMATEShoes_X-RAY_CourtesyDrRicRedden

Equine Hoof Care Teams at Work

Smart Manure Management for Small Horse Farms

EHV Case Confirmed in Utah

2 Washington Horses Positive for Equine Influenza

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