The best hay for goats depends on what you’re raising them for and what life stage they’re in. Alfalfa hay is the gold standard for growing kids, pregnant does, and lactating does because of its high protein content (15–17% crude protein). Grass hays like orchard grass, timothy, and tall fescue work well for adult goats at maintenance, typically running 9–11% crude protein. Most goat owners end up using a mix of both.
Alfalfa Hay: The High-Protein Option
Alfalfa is a legume hay, and it delivers roughly 15–17% crude protein on a dry matter basis compared to about 9–11% for most grass hays. That nearly double protein content makes it the go-to choice for any goat with elevated nutritional demands: does in late pregnancy, does producing milk, and young kids putting on growth. In feeding trials with Spanish and Boer goat kids, those fed alfalfa hay had access to significantly more protein per mouthful than those on mixed grass hay, and goats generally digest alfalfa more efficiently than sheep do from the same forage.
Alfalfa is also high in calcium, which is a plus for lactating does losing calcium through milk production. However, that high calcium content can work against you with bucks and wethers. Male goats are prone to urinary calculi (essentially kidney stones), and the dietary balance that matters most is the calcium-to-phosphorus ratio, which should stay between 1.5:1 and 2:1. Feeding alfalfa to males isn’t automatically dangerous, but you need to pay attention to the overall mineral balance rather than just tossing them a flake and walking away.
Grass Hay: The Everyday Staple
For adult goats that aren’t breeding, growing, or producing milk, grass hay provides enough nutrition without the excess calories and protein that can lead to obesity. Common grass hay varieties include orchard grass, timothy, bermuda, tall fescue, and brome. These typically range from 9–11% crude protein and have higher fiber content than alfalfa, with neutral detergent fiber levels in the 71–83% range. That higher fiber is fine for mature goats at maintenance and actually helps keep their rumen functioning properly.
One thing to know: not all grass hay is created equal. A well-fertilized, early-cut orchard grass can approach 12–13% protein, while a late-cut, stemmy fescue might drop below 8%. The only way to know what you’re actually feeding is to have your hay tested at a forage testing laboratory. Many county extension offices can help you arrange this, and it typically costs under $25 per sample.
Matching Hay to Your Goat’s Life Stage
The biggest mistake new goat owners make is feeding the same hay to every animal on their property. A lactating dairy doe producing a gallon of milk a day has dramatically different protein and energy needs than a dry wether serving as a pasture pet. Here’s a practical breakdown:
- Growing kids (under 1 year): Alfalfa or an alfalfa-grass mix. Kids need the extra protein to build muscle and bone. In research trials, kids fed alfalfa at 15–17% crude protein gained weight more efficiently than those on grass hay alone, even with supplemental grain.
- Lactating does: Alfalfa hay, often paired with grain supplementation. Milk production requires substantial protein and calcium, and grass hay alone can’t keep up.
- Pregnant does (last 6 weeks): Alfalfa or a 50/50 alfalfa-grass blend. The fetus does most of its growing in the final trimester, and protein demands spike.
- Dry does and bucks: Grass hay is sufficient. Alfalfa can cause unnecessary weight gain and, in males, may skew mineral ratios if not balanced carefully.
- Wethers: Grass hay only, with close attention to the calcium-to-phosphorus ratio. Wethers are the most vulnerable to urinary calculi, so avoid diets heavy in either alfalfa (high calcium) or cereal grains (high phosphorus) without proper balancing.
Cereal Grain Hays and Other Options
Oat hay, barley hay, and wheat hay are sometimes available and can be decent forage options for goats. These cereal grain hays tend to fall in the moderate protein range, similar to grass hays, and goats generally find them palatable. The caution with cereal grains applies more to the grain itself than the hay: whole cereal grains are high in phosphorus and low in calcium, which can push the mineral ratio in the wrong direction and contribute to urinary calculi in males.
Peanut hay and soybean hay are legume alternatives to alfalfa in regions where they’re grown. They offer higher protein than grass hay, though availability is regional. Whatever type you choose, the quality of the individual cutting matters more than the species name on the label.
How to Spot Good Hay
You can learn a lot about hay before you ever get a lab test. Start with color: green hay generally indicates it was cured under good conditions. Sun-bleached hay that’s lost its green may still be nutritionally fine, but hay that turned brown or dark from rain exposure while drying likely lost nutrients through leaching. Hay that was baled too wet often turns dark brown or black and develops a tobacco-like smell, signaling it’s at risk for mold.
Leafiness is the single best visual predictor of nutritional value. About two-thirds of hay’s protein is contained in the leaves, not the stems. Look for a high leaf-to-stem ratio with small, fine stems and large, intact leaves. Run your hands through a flake and see if leaves crumble and fall off easily. If they do, the hay was likely baled too dry (below 15% moisture), and much of that protein will end up as dust on the ground rather than in your goat.
Give the hay a sniff. Good hay smells sweet and slightly grassy. Musty or sour-smelling hay is a serious red flag.
Why Moldy Hay Is Dangerous
Feeding moldy hay to goats isn’t just wasteful, it’s genuinely dangerous. The bacterium Listeria monocytogenes thrives in spoiled feed, particularly silage and hay stored at higher moisture levels where the pH allows it to multiply. Listeriosis in goats causes encephalitis (brain inflammation), fever, facial paralysis, circling, and depression. Infected does can abort, deliver stillborn kids, or lose newborns shortly after birth. The bacteria also colonize the intestinal tract, meaning one sick goat can spread the infection to others through fecal contamination.
Controlling listeriosis comes down to prevention: keep hay dry, store it off the ground, and discard any bales that smell off or show visible mold. If hay got rained on and smells musty when you open a bale, don’t feed it.
Reducing Hay Waste
Goats are notoriously wasteful with hay. They pull it out, drop it on the ground, urinate on it, and refuse to touch it after that. A good hay feeder pays for itself quickly. Feeders with solid bottoms or metal skirting at the base reduce waste significantly. In cattle feeding trials, adding metal sheeting to the bottom of a ring feeder cut hay loss by 30%, and cone-style feeders reduced waste by 43% compared to standard ring feeders. The same principles apply at a smaller scale for goats.
Keyhole feeders and wall-mounted racks that force goats to eat from a narrow opening tend to work better than open troughs. The goal is to prevent goats from pulling large mouthfuls out and dropping them. Feed smaller amounts more frequently rather than filling a feeder for the week, and keep feeders elevated so goats aren’t eating off the ground. Hay that contacts manure or soil exposes goats to internal parasites, which are the number one health threat in most goat herds.
If you’re feeding outside, choose well-drained, upland areas and rotate your feeding location periodically. Feeding in the same muddy spot all winter leads to parasite buildup, soil compaction, and weed problems come spring.