Feeding American Paint Horses follows standard equine nutrition principles with adjustments based on individual metabolism, activity level, and body condition. The foundation of any Paint Horse's diet should be quality forage—grass hay or mixed grass hay—provided at approximately 1.5-2% of body weight daily. For an average 1,000-pound Paint Horse, this equals 15-20 pounds of hay per day, divided into multiple feedings (2-3 times daily minimum) or offered free-choice if weight management isn't a concern. Continuous access to forage supports digestive health, provides mental occupation, and mimics natural grazing behavior that horses evolved to practice nearly constantly.
Hay quality significantly impacts nutritional value and feeding rates. High-quality grass hay provides adequate protein (8-12%), digestible energy, vitamins, and minerals for maintenance needs of horses in light to moderate work. Legume hays like alfalfa offer higher protein and calcium content, beneficial for growing horses, lactating mares, or hard-working performance horses, but unnecessary for mature horses in light work and potentially contributing to excess energy or weight gain. Hay should be evaluated for quality indicators including color (bright green preferred over brown or bleached), smell (fresh, not moldy or dusty), texture (soft, leafy rather than stemmy), and maturity (earlier cutting generally higher quality). Dusty or moldy hay should never be fed as it causes respiratory problems and potential serious illness.
Concentrate feeds (grains or commercial feeds) supplement forage to meet energy demands exceeding what hay alone provides. Many Paint Horses in light riding work maintain excellent condition on quality hay alone without grain, particularly if they're efficient metabolizers ("easy keepers"). Horses in moderate to heavy work, performance training, growth phases, pregnancy, or lactation benefit from concentrate supplementation. Commercial feeds formulated for stock horses or performance horses provide balanced nutrition including vitamins and minerals often deficient in hay. Feeding rates follow manufacturer guidelines adjusted to individual needs, typically ranging from 0.5-1% of body weight in concentrates for working horses (5-10 pounds daily for 1,000-pound horses), split into 2-3 meals to support digestive health.
Oats, corn, and barley represent traditional grain options, providing energy primarily through starch and sugar. However, high-starch diets can cause digestive upset, behavioral issues from excess energy, and metabolic problems in susceptible horses. Modern commercial feeds often emphasize fat and fermentable fiber as primary energy sources rather than starch, providing calories without the blood sugar spikes and behavioral effects of high-grain diets. These feeds work well for Paint Horses needing calories to support work without becoming "hot" or difficult to handle.
Vitamin and mineral supplementation ensures adequate intake of nutrients that may be deficient in forage or concentrates. Quality commercial feeds include supplementation, but horses eating only hay need separate vitamin/mineral products or ration balancers. Essential nutrients include vitamin E (often deficient in stored hay), selenium (in deficient geographic regions), copper, and zinc. Salt should be available free-choice through blocks or loose salt, supporting electrolyte balance and encouraging adequate water consumption. Horses need constant access to fresh, clean water, typically drinking 5-10 gallons daily depending on temperature, humidity, diet moisture content, and activity level.
Pasture grazing provides nutrition, exercise, and mental stimulation when managed appropriately. Paint Horses generally handle pasture well without the metabolic sensitivities affecting some breeds, though individual variation exists. Spring grass, high in sugar and low in fiber, can cause founder (laminitis) in susceptible horses, particularly those overweight or with prior laminitis history. Rotational grazing systems, limited turnout hours during lush growth periods, or grazing muzzles manage intake for at-risk individuals. Horses transitioned gradually to pasture (15-20 minutes first day, increasing gradually over 2 weeks) adapt their digestive systems to fresh grass without upset.
Body condition scoring using the Henneke 1-9 scale guides feeding adjustments to maintain optimal weight. Most Paint Horses should maintain BCS 5 (moderate) where ribs are easily felt without pressure, the back is level with slight fat covering, and the neck blends smoothly into body without cresty appearance. Horses showing prominent ribs and hip bones (BCS 3 or below) need increased feed, while horses with cresty necks, fat deposits around tail heads, and difficult-to-feel ribs (BCS 7+) require reduced intake and increased exercise. Regular body condition assessment (monthly minimum) catches weight changes early, allowing gradual adjustments rather than drastic changes potentially causing health problems.
Feed-related health concerns for Paint Horses include obesity from overfeeding, colic from sudden diet changes or poor-quality feed, choke from eating too rapidly, and metabolic disorders in genetically susceptible individuals. Preventing these issues requires consistent feeding schedules, high-quality feed, gradual diet changes over 7-10 days, appropriate portion sizes based on actual needs rather than generous estimates, and close monitoring for any signs of digestive upset including reduced appetite, abnormal manure, or behavioral changes suggesting discomfort.