Why is my horse not eating his grain? Direct causes and solutions
If your horse is suddenly ignoring his grain, the most common culprits are dental pain, gastric ulcers, or a change in feed. Horses are creatures of habit, and even a small shift can disrupt their appetite. Below, we break down the likely reasons and what you can do right now.
1. Dental problems: The number one cause
Horses’ teeth grow continuously and can develop sharp points, hooks, or loose teeth that make chewing painful. A horse with dental issues may drop grain (quidding), chew slowly, or turn away from the feed bucket. Schedule a veterinary dental exam at least once a year. In the meantime, try offering a soaked mash or beet pulp to see if they eat soft feed. If your horse eagerly eats hay but refuses grain, the grain texture may be causing discomfort.
2. Gastric ulcers and digestive discomfort
Gastric ulcers are extremely common in performance horses and even pleasure horses under stress. Signs include poor appetite, especially for grain (which increases stomach acid), colic symptoms, and weight loss. If your horse eats hay but not grain, ulcers could be the issue. Work with your vet to diagnose via gastroscopy or try a trial of ulcer medication and a diet low in starch. Feeding small, frequent meals and providing free-choice hay can help manage ulcers.
3. Stress, routine changes, or competition for food
Horses are sensitive to changes in their environment or routine. A new barnmate, a change in turnout schedule, or even a new bag of grain (with a slightly different smell or taste) can cause a horse to refuse food. Check that your horse isn’t being bullied at feeding time. If multiple horses are fed in the same area, ensure each has its own space. Gradually transition to new feeds over 7-10 days by mixing old and new.
4. Palatability and feed freshness
Sometimes the grain itself is the problem. Stale or rancid feed, especially if stored improperly (heat, moisture, pests), can be unappetizing. Always store grain in a cool, dry place in a sealed container. Check the expiration date and smell for off odors. If your horse has been on the same feed for a long time, they may simply be bored. Try adding a small amount of a different textured feed or a dash of molasses (if no metabolic issues) to entice them.
5. Medical conditions beyond the gut
Other health issues can reduce appetite: liver or kidney disease, metabolic disorders like Equine Metabolic Syndrome (often with obesity and hoof issues), or infections causing fever. If your horse also shows lethargy, weight loss, diarrhea, or dull coat, consult your veterinarian promptly. Never assume it’s just pickiness.
Quick tips to encourage grain eating today
- Soak the grain with warm water to make a mash. This softens it, reduces dust, and can make it more appealing.
- Warm it slightly (not hot) in cold weather. Never microwave metal buckets.
- Hand feed a small amount to see if they accept from your hand versus the bucket.
- Remove uneaten grain after 20-30 minutes to prevent spoilage and monitor intake.
- Offer hay first then grain, or vice versa, depending on your horse’s preference.
If your horse skips one meal but resumes eating later, it may be a passing issue. However, any refusal lasting more than 24 hours, especially if accompanied by other symptoms, warrants a vet call. Keep a log of feed intake and behaviors to share with your veterinarian. Remember, a horse that stops eating grain is communicating that something is wrong. Listen.
Key Takeaway
If your horse refuses grain, schedule a dental exam and consult a vet to rule out ulcers or other health issues before assuming pickiness.