Most horses do well eating hay or forage equal to about 1.5 to 2 percent of their body weight every day. For a 1,000-pound horse, that works out to roughly 15 to 20 pounds of hay daily — spread across the day so the stomach is rarely empty for long. Horses are grazing animals whose digestive systems expect a near-constant trickle of fiber, not big infrequent meals.
Why forage matters more than anything else
Hay is not filler; it is the foundation of the equine diet. Long-stem fiber keeps the gut moving, buffers stomach acid, and gives horses the chewing time they are built for. A horse fed only concentrates with little hay will eat too fast, stand around bored and hungry, and run a higher risk of digestive trouble. Whatever else you feed, forage should never be restricted below about 1.5 percent of body weight per day.
Dialing in the right amount for your horse
The 1.5 to 2 percent figure is a starting point, not a prescription. An easy-keeping Quarter Horse on light work may hold weight beautifully at the low end, while a Thoroughbred in training, a growing youngster, or a lactating mare may need the top end or more. The honest way to adjust is a weight tape and your eyes: tape every two weeks, note rib cover, topline, and energy, and change the amount by no more than about 10 percent at a time. Hay quality matters too — coarse, late-cut hay delivers fewer calories per pound than leafy early-cut hay, so a "flake" is not a unit of measurement. Weigh your hay for a week on a hanging scale; most owners are surprised at what a flake actually weighs.
Spreading feed through the day
Horses should not go more than four to six hours without something to chew, and overnight stretches are the usual problem. Two big hay feedings leaves long hungry gaps; three or four smaller ones — or a slow feeder net for overnight — keeps forage in front of them longer. If your horse eats too fast, a small-hole hay net slows the pace and stretches the same ration over hours. Turnout helps enormously: even a dry lot with hay nets mimics grazing time far better than a stall with two flakes tossed at 5 PM.
Safety notes
Never feed moldy, dusty, or musty-smelling hay, and do not buy hay that has been rained on and baled wet — overheating bales can even combust in storage. Store hay off the ground in a dry, ventilated spot, and introduce any new hay gradually over a week, mixing it with the old supply. If your horse is obese or prone to laminitis, the hay itself may need restricting with a muzzle or measured nets — talk with your veterinarian rather than guessing.
Keep the whole barn on the same ration
In a boarding barn or family farm, the classic failure is three people each tossing "a couple flakes" and the horse getting wildly different amounts day to day. KinsLe's Care Teams solve exactly that: assign the hay ration as a duty, and every feeding gets logged with a timestamp so the next person sees what was given and when. Every helper can check the Care Teams record on KinsLe before tossing flakes, confirming the assigned hay ration and the time the last feeding was logged.