Importance of Water for Horses
Water is the most critical nutrient for horses. An adult horse at rest consumes 5–10 gallons (19–38 liters) of water daily, but this can double in hot weather or during work. Always provide fresh, clean water. Horses may refuse to drink stale or contaminated water, leading to dehydration and colic.
Daily Water Intake Recommendations
- Average adult horse (1,100 lb / 500 kg): 5–10 gallons (19–38 L) per day.
- Lactating mares: 10–15 gallons (38–57 L) per day.
- Hot weather or heavy exercise: Increase by 50–100%.
- Winter: Ensure water is not freezing; heated buckets help.
Feeding Types and Nutrition
Forage First
Horses are herbivores and require forage (hay or pasture) as the foundation of their diet. Forage should constitute at least 1–2% of their body weight daily. For a 1,100 lb horse, that’s 11–22 lb (5–10 kg) of hay.
Concentrates (Grains)
Grains like oats, barley, and corn provide energy. However, they should be fed in moderation. There are also pelleted feeds and sweet feeds designed for different life stages.
Supplements
Vitamins and minerals are often added to commercial feeds. Common supplements include:
- Salt (sodium chloride) – provide a salt block.
- Electrolytes – for horses that sweat heavily.
- Vitamin E and selenium – for horses on poor pasture.
- Biotin – for hoof health.
Feeding Schedule and Portion Control
Horses should be fed small, frequent meals mimicking their natural grazing pattern. Ideally:
- Feed at least twice daily (morning and evening).
- Divide concentrate meals into two or three feedings.
- Do not feed more than 0.5% of body weight in grain per meal to avoid colic.
| Life Stage | Hay (lb/day) | Grain (lb/day) | Calories (Mcal/day) |
|---|---|---|---|
| Adult (idle) | 15–20 | 0–5 | 16–18 |
| Working (moderate) | 15–20 | 5–10 | 20–25 |
| Lactating mare | 20–25 | 8–12 | 28–33 |
| Growing foal (6 mo) | 5–10 | 3–5 | 10–15 |
Foods and Substances to Avoid
- Moldy or dusty hay – can cause respiratory issues and colic.
- Excessive grain – leads to laminitis and obesity.
- Sudden diet changes – can cause digestive upset.
- Toxic plants – such as ragwort, yew, and red maple leaves.
- Avocado, chocolate, caffeine, and fruit pits.
Signs of Proper vs. Poor Nutrition
Good Health Indicators
- Shiny coat and bright eyes.
- Proper body condition (ribs easily felt but not visible).
- Normal manure consistency (formed balls).
- Energetic and alert behavior.
Signs of Nutritional Issues
- Dull hair, weight loss or gain, lethargy.
- Diarrhea or constipation.
- Poor hoof growth.
- Increased thirst or urination (possible diabetes or kidney issues).
Special Considerations for Different Life Stages
Foals (0–6 months)
Foals rely on mare’s milk for the first few months. Creep feeding (small amounts of high-quality grain) can start at 2–3 months. Weaning occurs around 4–6 months.
Weanlings and Yearlings
These require higher protein and energy for growth. Feed a balanced ration containing 14–16% crude protein. Ensure mineral supplements include calcium and phosphorus in a 1:1 ratio.
Senior Horses (over 20 years)
Older horses may have dental issues, so hay cubes or soaked hay are easier to chew. Senior feeds are lower in starch and higher in digestible fiber. Regular dental exams are essential.
By adhering to these guidelines, you can maintain your horse’s health through proper hydration and nutrition.