Introduction
Feeding a horse properly is essential for its health, performance, and longevity. This guide covers the basics of daily feeding for the average pleasure or leisure horse, not high-performance athletes. Key factors include forage as the foundation, concentrates based on workload, and attention to water, salt, and feeding routines.
Recommended Diet Types
Horses are herbivores and natural grazers. The primary diet options include:
- Forage (hay or pasture): The cornerstone of a horse's diet. Good quality grass hay (e.g., timothy, orchard grass) is preferred for most horses. Alfalfa is richer and can be fed in moderation but not as the sole forage for easy keepers.
- Concentrates (grains and pelleted feeds): Oats, corn, barley, or commercial feeds designed for maintenance. These provide extra energy and nutrients when forage alone is insufficient (e.g., for hard keepers or horses in light work).
- Supplements: Added only if specific deficiencies are identified. Common supplements include vitamin E, selenium, and probiotics.
Most average horses do well on a forage-only diet with appropriate vitamins and minerals. Avoid high-sugar concentrates as they can lead to laminitis and metabolic issues.
Portion Sizes & Daily Caloric Requirements by Age, Size, and Activity
Feed amounts are based on body weight (BW). A horse typically eats 1.5–2% of its BW in feed (forage + concentrate) daily. The table below provides general guidelines.
| Horse Category | Body Weight (lbs) | Daily Forage (lbs) | Daily Concentrate (lbs) | Approx. Total Calories (Mcal) |
|---|---|---|---|---|
| Light Horse (idle) | 1,000 | 15–20 | 0 | 15–18 |
| Light Horse (light work) | 1,000 | 15–18 | 2–4 | 18–22 |
| Pony (idle) | 500 | 8–10 | 0 | 9–11 |
| Senior Horse (idle, 20+ yrs) | 1,000 | 15–20 (easy to chew) | 0–2 (if needed) | 15–20 |
Adjust based on body condition: an overweight horse needs less concentrate and potentially limited forage; a thin horse needs more. Workload categories: idle/pasture, light (trail riding 1–2 hours/week), moderate (3–5 hours/week).
Feeding Frequency & Schedule
Horses have small stomachs and should be fed multiple times daily. Ideal schedule:
- Forage: free-choice or at least 3 meals per day (e.g., morning, noon, night). Ideally, hay should be available continuously or 16+ hours per day to mimic grazing.
- Concentrates: 2–3 small meals per day (e.g., morning and evening). Never feed more than 5 lbs of grain in one meal due to risk of colic.
- Feed at consistent times each day. Change rations gradually over 7–10 days to avoid digestive upset.
Essential Nutrients: Protein, Fat, Carbohydrates, Vitamins & Minerals
- Protein: 8–10% in maintenance diet. Quality sources: alfalfa, soybean meal. Amino acids lysine and methionine are crucial.
- Fat: Up to 5–8% of diet (vegetable oil, rice bran). Provides energy without starch. Essential fatty acids for skin and coat.
- Carbohydrates: Fiber from forage (complex carbs) is the primary energy source. Starches and sugars (simple carbs) from grains should be limited, especially for easy keepers.
- Vitamins: Vitamin A (carotene from forage), D (sunlight), E (antioxidant, needs supplement if no pasture). B vitamins are synthesized in the hindgut.
- Minerals: Calcium (Ca) and phosphorus (P) ratio should be 1.2:1 to 2:1; supplement with a mineral mix if hay is deficient. Salt (0.5–1 oz/day) should always be available.
Toxic or Harmful Foods & Ingredients
Never feed the following to horses:
- Legume grasses (like clover) when moldy: can cause slobbers or photosensitivity.
- Moldy hay or grain: risk of colic, mold toxins.
- High-sugar treats (candy, bread): can cause laminitis and obesity.
- Fruit pits (apple seeds, peach pits): contain cyanide.
- Lawn clippings: can ferment and cause colic.
- Avocado, chocolate, caffeine: toxic to horses.
Water Intake Recommendations
Water is the most essential nutrient. Average requirement: 10–12 gallons per day for a 1,000-lb horse. Increase in hot weather or during work. Always provide clean, fresh water free-choice. Avoid feeding a dry meal without access to water; offer water before or after. Check water sources in winter to prevent freezing.
Potentially Beneficial Supplements
- Salt (sodium chloride): Provide a plain salt block (white) loose or block; if horse works, use one with electrolytes.
- Vitamin E & Selenium: For horses on hay without pasture; supports immune and muscle health.
- Probiotics & prebiotics: After antibiotic use or digestive upset.
- Joint supplements: Glucosamine, chondroitin, MSM for older or working horses.
- Omega-3 fatty acids: Flaxseed or fish oil for coat and anti-inflammatory support.
Only supplement after confirming a need. Over-supplementation can be harmful.
Age-Specific Differences: Foals, Adults & Seniors
- Foals: For first 6 months, mother's milk; then creep feed (high protein, 14–16%) and small amounts of hay. Weaning at 4–6 months.
- Adults (2–15 years): Maintenance as described. Adjust for pregnancy/lactation. Mares in late gestation need more protein and calcium.
- Seniors (15+ years): Decline in digestion. Easily chewable forage (soaked hay cubes, hay pellets). Lower sugar concentrates. Often need a senior complete feed with added fat. May require dental check-ups every 6 months.
Health Signs of Good vs. Poor Diet
Good diet signs: Shiny coat, bright eyes, normal manure (formed, not too hard or soft), good body condition score (5/9), alert and energetic, hooves strong and growing normally.
Poor diet signs: Dull/dry coat, weight loss or obesity, lethargy, diarrhea or constipation, excessive bolting of food (may indicate hunger or dental pain), picky eating. Chronic issues like laminitis, colic, or tying-up may also stem from diet. Consult a veterinarian and an equine nutritionist if problems arise.
In conclusion, feeding a horse correctly involves providing high-quality forage, meeting specific needs for energy and nutrients, and maintaining consistency. Observe your horse daily and adjust as needed to keep it healthy and happy.