Can Donkeys Eat Straw? How Straw Fits Into a Donkey Diet

Straw can fit into a healthy donkey diet, but context matters. Donkeys are efficient at using calories from forage, so many do better on lower-energy roughage than horses of similar size. Veterinary and donkey welfare sources note that healthy adult donkeys often do well on diets built around clean barley straw, with smaller amounts of moderate-quality grass hay or limited pasture. That approach helps meet their need to chew and trickle feed without pushing calorie intake too high.

Not all straw is equal. Barley straw is commonly preferred because it is palatable and lower in energy than many hays. Wheat straw may also be used, while oat straw is often less suitable because it can contain more leftover grain and more calories. Any straw offered as feed should be clean, dry, free of mold, and free of obvious seed heads or retained grain. Dusty or moldy bales can irritate the airways, and spoiled forage can upset the gut.

Straw should also be viewed as part of a plan, not a one-size-fits-all answer. Some donkeys need more digestible forage than straw can provide, especially growing animals, seniors, underweight donkeys, pregnant or lactating jennies, and donkeys with poor teeth. In those cases, your vet may suggest more grass hay, chopped forage, or a ration balancer to support protein, vitamins, and minerals.

The biggest reason pet parents ask about straw is weight control. That is reasonable, because obesity is a major concern in donkeys and can increase the risk of laminitis and metabolic problems. Still, severe restriction is not safe. Donkeys are especially vulnerable to hyperlipemia when feed intake drops too low or changes too fast, so any diet change should be gradual and guided by your vet.

For many healthy adult donkeys, total forage intake is often kept around 1.3% to 2% of body weight per day on a dry matter basis, adjusted for body condition, workload, season, and pasture access. Merck notes that donkeys may do well on about 1.5% of body weight in dry matter daily, with roughly 70% to 75% barley straw and 25% to 30% moderate-quality grass hay or pasture. The Donkey Sanctuary also advises that healthy donkeys may eat diets where straw makes up most of the ration, often around 75% in summer and 50% in winter when more forage support may be needed.

As a practical example, a 400-pound donkey may eat roughly 5.2 to 8 pounds of total forage daily, depending on the plan your vet recommends. If that donkey is overweight but otherwise healthy, a large share of that forage may be straw. If the donkey is older, thin, pregnant, nursing, or has dental trouble, the straw portion may need to be lower.

Introduce straw gradually over 7 to 14 days, especially if your donkey has been eating mostly hay or pasture. Sudden changes can upset the gut or lead to poor intake. Make sure fresh water is always available, because dry forage increases the need for good hydration. Slow feeders can help stretch eating time, but they should not make access so difficult that intake drops too much.

If you are unsure how much your donkey should get, ask your vet to help you build a ration based on body weight and body condition score. That is especially important if your donkey has had laminitis, is losing weight, leaves straw behind, bolts feed, or has changes in manure.

Straw-related problems usually show up as poor chewing, reduced appetite, manure changes, belly discomfort, or weight changes. A donkey that cannot chew straw well may drop partially chewed feed, eat more slowly than usual, or leave coarse stems behind. That can point to dental disease, mouth pain, or a forage type that is too tough for that individual.

Watch closely for signs of digestive trouble. Concerning signs include reduced manure output, dry or scant droppings, stretching out, pawing, flank watching, lying down more than normal, or acting dull. These can be early signs of colic or impaction, which can happen when a donkey eats dry, fibrous forage without enough water intake or when the diet does not match their chewing ability.

Body condition also matters. If your donkey gains weight on a straw-containing diet, the issue may be too much pasture, too much hay, hidden grain in the straw, or too many treats. If your donkey loses weight, develops a rough coat, or seems low-energy, the ration may not be meeting protein, vitamin, or mineral needs. Donkeys with obesity are also at risk for laminitis, so heat in the feet, a stronger digital pulse, stiffness, or reluctance to walk should be taken seriously.

See your vet immediately if your donkey stops eating, has very little manure, shows signs of colic, seems weak, or develops foot pain. Donkeys often hide illness, so subtle changes can still be important.

If straw is not a good fit for your donkey, there are other forage options to discuss with your vet. Moderate-quality grass hay is often the first alternative. It is usually easier to chew than straw and can work well for donkeys that are thin, older, or not maintaining condition. If weight gain is a concern, your vet may recommend a lower-calorie grass hay and careful control of pasture access.

For donkeys with poor teeth or trouble chewing long stems, short-chopped forage or other soaked fiber-based products may be easier to manage. These options can help maintain fiber intake while lowering the risk of choke or poor digestion. A ration balancer may also be useful when the forage base is intentionally low in calories, because it can help fill nutrient gaps without adding much energy.

Pasture is not automatically safer. Many improved pastures in the United States are too rich for easy-keeping donkeys, especially in spring and after rain. Limited turnout, dry-lot management, strip grazing, or a grazing muzzle may be part of a safer plan for donkeys prone to obesity or laminitis.

The best alternative depends on your donkey's age, teeth, body condition, and medical history. Your vet can help you compare straw, hay, chopped forage, and pasture so the diet supports both gut health and weight control.