Baby Donkey Nutrition: Feeding Foals and Young Donkeys Safely

Baby donkeys do best when nutrition follows normal equine neonatal principles, with extra caution because donkeys are efficient metabolizers and can run into trouble if diets are too rich or changed too fast. In the first hours of life, the priority is colostrum, the first milk that provides antibodies. Foals absorb those antibodies best in the first 6 to 12 hours, and absorption drops sharply by about 18 to 24 hours. If a foal did not nurse well, seems weak, or the jenny has little milk, see your vet promptly.

For orphaned or poorly nursing foals, a commercial mare’s milk replacer is usually the closest match to natural milk. Equine references note that cow’s milk and goat’s milk have both been used, but they are not ideal matches. Cow’s milk is lower in sugar and higher in fat than mare’s milk, while goat’s milk may be easier to digest than cow’s milk but can still increase the risk of constipation. Homemade substitutions should only be used as a short bridge while your vet helps build a safer plan.

As the foal grows, nutrition shifts from mostly milk to a combination of milk, fresh water, forage, and a young-foal concentrate. Merck notes that foals under about 3 months have limited ability to digest grain well, so solid feed should be introduced gradually and chosen carefully. Good-quality hay and clean water matter early, but milk or milk replacer remains the main calorie source at first.

If you are raising a baby donkey without the jenny, management matters as much as the formula. Feed temperature, mixing accuracy, sanitation, body-weight checks, and social contact all affect outcome. The Donkey Sanctuary also warns that hand-reared foals can develop behavioral problems without appropriate animal companionship, so nutrition and husbandry should be planned together with your vet.

The safest amount depends on the foal’s age, body weight, health status, and the exact milk replacer being used. Equine sources vary somewhat, but they agree on the same principle: small, frequent feedings are safer than a few large ones. Merck advises that orphan foals under 2 days old may need feeding every hour, then every 2 hours for the next 2 weeks, with total daily intake adjusted so the foal receives about 10% to 15% of body weight per day in properly diluted milk replacer. University of Minnesota guidance gives a broader practical target of 20% to 25% of body weight per day divided across many feedings. That difference is one reason your vet should individualize the plan rather than relying on a single chart.

As a rough example, a 50 kg (110 lb) donkey foal may need several liters of milk or milk replacer over 24 hours, split into many feedings, not one or two large bottles. Merck describes typical individual feed volumes of about 250 to 500 mL per feeding, but product energy density and the foal’s tolerance matter. Overfeeding can trigger diarrhea, bloating, or colic, while underfeeding can lead to poor growth, weakness, and dehydration.

For solid food, start slowly. Fresh water should always be available. Good-quality soft hay can be offered early for exploration, but meaningful grain digestion develops later. Around 3 months, foals can be encouraged to eat a concentrate designed for growing foals with at least 16% crude protein, alongside hay. Weaning off milk replacer is usually considered around 3 to 4 months only after the foal is eating enough solid feed consistently.

Avoid sudden feed changes, rich treats, large grain meals, cattle feed, and random supplements. Baby donkeys are not small adult donkeys, and they are not calves. If you are unsure whether a product is appropriate, bring the label to your vet and ask before feeding it.

Watch closely for poor nursing, weakness, diarrhea, constipation, bloating, colic signs, milk coming from the nose, coughing during feeding, fever, or failure to gain weight. A healthy foal should be bright, interested in nursing, and steadily growing. Repeated loose stool after feedings can mean the formula concentration is wrong, the feeding volume is too large, the milk is unsuitable, or the foal is sick for another reason.

Constipation can also happen, especially when substitute milks do not match mare’s milk well. Straining, tail lifting, repeated lying down and getting up, reduced appetite, or a tense belly all deserve attention. Milk at the nostrils, gagging, or coughing during bottle feeding raises concern for aspiration, which can become serious quickly.

Poor growth is another red flag. If the foal looks tucked up, weak, sleepy, or is not gaining as expected, the problem may be inadequate calories, dehydration, infection, poor antibody transfer, or another neonatal illness. Colostrum failure is especially important in the first day of life, which is why many foals benefit from an IgG blood test within 24 hours.

See your vet immediately if a newborn foal has not nursed well in the first few hours, cannot stand, has persistent diarrhea, shows colic, seems dehydrated, or develops a swollen belly. Young foals can decline fast, and feeding problems often overlap with medical problems rather than existing on their own.

If the question is whether a baby donkey can eat the same foods as an older donkey, the safer answer is usually not yet. The best first choice is always the jenny’s milk. If that is not possible, the next safest option is a commercial mare’s milk replacer selected with your vet. These products are designed to better match equine milk than most farm-animal formulas.

If a true equine milk replacer is temporarily unavailable, your vet may discuss short-term alternatives such as carefully selected goat’s milk or modified low-fat cow’s milk. These are backup options, not ideal long-term diets. University of Minnesota notes that some calf milk replacers may be used only if the ingredient list is appropriate, with all-milk proteins and very low fiber, but many calf products contain soy, fish proteins, flours, or byproducts that are poor choices for foals.

As the foal matures, safer nutrition options include clean water, soft good-quality hay, and a foal-specific concentrate introduced gradually. Avoid sweet feeds, heavy grain meals, lush pasture overload, bread, kitchen scraps, and supplements meant for adult horses or cattle unless your vet specifically recommends them.

If you are bottle-raising a donkey foal, ask your vet to help you choose among three practical paths: continued nursing from the jenny with support, hand-feeding with mare’s milk replacer, or fostering onto a nurse mare when available. Each option can work in the right setting, and the safest choice depends on the foal, the jenny, your setup, and how intensive the care can be.