If your pony is dropping weight this winter, you are not alone. The direct answer: ponies lose weight in winter because they burn more calories to stay warm, but may not get enough forage or may have health issues. Let’s walk through the common causes and what you can do about them.
Increased Energy Needs in Cold Weather
When temperatures drop, a pony shivers and uses body fat to generate heat. The lower critical temperature (LCT) for most ponies is around 32°F (0°C) for healthy adults, but wet, windy conditions lower it further. For every 10°F below the LCT, a pony’s energy requirement increases by about 2%. This means a pony that usually needs 15-20 Mcal/day might need 20% more during a cold snap. If you don’t increase feed, especially forage, the pony will burn its own reserves.
Ponies evolved on poor pasture and often have a slow metabolism, making them prone to obesity in summer. But that winter coat takes energy to grow, and if they aren’t getting enough calories, weight loss is rapid. Focus on good quality hay (tested for protein and energy) as the foundation. Warm water also helps; cold water reduces intake, worsening weight loss.
Poor Forage Quality and Quantity
Winter hay is often lower in protein and digestible energy than summer pasture. Even if you feed the same amount, the pony may not get enough nutrients. Hay that is stemmy, moldy, or weathered loses nutrients. Check for: leafiness (more leaves = better protein), color (greenish = better preserved), and smell (musty = mold). A hay analysis is ideal.
Ponies are trickle feeders; they need forage 16-18 hours a day. If you limit hay to 2-3 flakes morning and evening, they go long periods without food, and their body uses its own fat to tide over. Instead, feed hay free-choice in a slow feeder (like a hay net with small holes) to spread intake across 24 hours. This also reduces waste and boredom.
Dental Issues
Horses’ teeth grow continuously, and sharp edges (points) can develop over time, causing pain when chewing. Signs: dropping partially chewed hay (quidding), slobbering, or preferring soft feeds. A pony with dental pain will eat more slowly or avoid hard hay, leading to weight loss. An equine dentist or veterinarian should perform a dental exam and float teeth at least once a year. If your pony is over 15 years old, check for periodontal disease, missing teeth, or irregular wear.
Parasites and Health Problems
Internal parasites (strongyles, roundworms, tapeworms) damage the gut lining, reducing nutrient absorption even if the pony eats plenty. A fecal egg count (FEC) test by your vet determines if deworming is needed. Avoid blanket deworming; resistance is common. Winter is a good time for FEC because pasture contamination is lower.
Other health issues: gastric ulcers (stress, diet change), metabolic disorders like equine metabolic syndrome or Cushing’s disease (PPID), chronic infections, or organ problems. Cushing’s often causes a long, curly coat that doesn’t shed and muscle wasting. If your pony is older, test for PPID. Any pony losing weight despite adequate feed needs a vet check: bloodwork, dental exam, and physical assessment.
Practical Steps for Winter Weight Maintenance
- Increase hay: Feed 1.5-2% of body weight in hay (e.g., a 500-lb pony gets 7.5-10 lb hay per day). Use a slow feeder to extend feeding time.
- Supplement energy: If hay alone doesn’t maintain weight, add a commercial high-fat feed (e.g., beet pulp, rice bran, oil). Start with 1-2 cups of oil per day, gradually increasing. Oil provides 2.25 times more energy per gram than carbs.
- Provide shelter: A run-in shed with three walls reduces wind chill and energy loss. Blanket if the pony is clipped, older, or low body condition.
- Warm water: Heated buckets or tank de-icers encourage drinking. A pony that drinks less eats less.
- Routine health: Deworm based on FEC, and schedule a dental exam. Monitor weight weekly with a weight tape.
- Watch for signs: Check for a tucked-up belly, visible ribs, or a dull coat. Lethargy or reluctance to move may indicate pain.
If your pony is losing weight despite these steps, call your vet. Winter weight loss can be a window into bigger issues that need professional attention.
Remember, ponies are not miniature horses; they are naturally chunky and efficient. A little winter paunch is normal, but a bony spine or pelvis means trouble. Be proactive, and your pony will stay healthy until spring.
Key Takeaway
To prevent winter weight loss, provide free-choice quality hay, warm water, and shelter, and address dental or health issues promptly with a vet.