22/06/2025
π΄ STOMACH ULCERS IN HORSES: What You Need to Know
π§ͺ 1. How Do Ulcers Occur?
Horses naturally produce stomach acid 24/7. In the wild, they're meant to graze constantly, which buffers this acid. But in domestic lifeβespecially for performance horsesβthis balance is often disrupted.
π΄ How Common Are Stomach Ulcers in Horses?
Equine gastric ulcers are extremely prevalent, particularly in horses under stress or in work.
π Prevalence estimates:
π Racehorses (in training): 80β100%
π Performance horses (eventers, dressage, showjumpers, endurance, etc.): 60β90%
π Transported horses: Around 70%
π΄ Foals: 25β50%, especially those that are sick or hospitalized
Even pasture-kept pleasure horses can get ulcers if there are periods of fasting, stress, or inconsistent feeding.
Common causes:
β±οΈ Infrequent feeding or long gaps without forage
π Intense training or travel stress
π High-grain, low-forage diets
π Use of NSAIDs (like Bute)
π Stable confinement without turnout
This leads to acid splashing and damaging the unprotected upper stomach lining, resulting in Equine Gastric Ulcer Syndrome (EGUS).
π 2. How to Identify Ulcers
Ulcers can be very subtleβbut the body gives us clues.
Warning signs:
π΄ Girthiness or resistance to grooming
π½οΈ Poor appetite or picky eating
πͺ Weight loss or poor coat condition
π’ Cranky, sour, or spooky behavior changes
π Lethargy or reluctance to move forward
π© Loose manure or mild colic symptoms
π Definitive diagnosis: Through gastroscopy (a vet scopes the stomach to confirm ulcers).
π 3. How to Treat Ulcers
β
Veterinary Treatment
Omeprazole (e.g. Gastrogard or Ulcergard): Reduces stomach acid so ulcers can heal.
Sucralfate: Coats ulcers and aids healing (often used for glandular ulcers).
β
Management Adjustments
π₯ Feed small meals frequentlyβalways allow access to hay or pasture.
π Use slow feeders to mimic natural grazing.
π« Minimize grain and high-starch feeds.
π§ Reduce stressβtravel, stable time, or intense schedules
πΎ Allow more turnout and natural movement.