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Alfalfa is the highest-protein hay you can buy, and goats love the stuff. But it’s not the right choice for every goat in every situation, and getting the balance wrong can cause real problems.
Can Goats Eat Alfalfa?
Yes, goats can eat alfalfa hay, and it’s one of the most nutrient-dense feeds available. It typically runs 15-22% crude protein depending on the cutting, which blows away any grass hay on the market.
Alfalfa is the go-to for pregnant does, nursing does, and growing kids. These animals have higher nutritional demands, and alfalfa delivers the protein, calcium, and calories they need to thrive.
For dry does, bucks, and wethers, alfalfa shouldn’t be the primary hay. The high calcium content creates a lopsided calcium-to-phosphorus ratio that causes serious health problems in males over time.
A timothy hay base works much better for these animals.
Why Alfalfa Is the Best Hay for Some Goats
A lactating doe on alfalfa will produce noticeably more milk than one eating only grass hay. The protein directly supports milk production, and the calcium keeps her bones strong while she’s nursing kids.
Growing kids benefit from the extra protein for muscle development and the calcium for building strong bones. First-cutting alfalfa tends to be stemmy with more fiber, while second and third cuttings are leafier and higher in protein.
Alfalfa also provides vitamins A, D, E, and K, which support immune function and reproductive health. In late pregnancy and early lactation, no other single hay comes close to meeting a doe’s nutritional needs.
Pairing it with treats like carrots adds even more vitamin A to the diet.
The Bloat Risk With Alfalfa
Alfalfa ferments faster in the rumen than grass hay, and that rapid fermentation produces gas. If a goat gorges on alfalfa before its rumen adapts, the gas can build up faster than the animal can belch it off.
This is called frothy bloat, and it can kill a goat in a matter of hours if not treated. The left side of the abdomen swells visibly, and the goat becomes restless, stops eating, and may grind its teeth.
You can see similar bloat risks with corn if goats eat too much too fast.
The fix is simple: introduce alfalfa gradually over 7 to 10 days. Start by mixing a small amount into their regular grass hay and increase the proportion slowly until their rumen bacteria adjusts.
Why Bucks and Wethers Need Less Alfalfa
Urinary calculi are mineral deposits that form in the urinary tract, and they hit male goats hardest. The narrow, winding urethra in bucks and wethers makes it easy for stones to get stuck, and a full blockage is a veterinary emergency.
Alfalfa’s calcium-to-phosphorus ratio runs about 5:1 or higher. A healthy ratio for male goats is closer to 2:1.
Feeding straight alfalfa to males over time is a recipe for stones.
Wethers are at the highest risk because castration reduces urethral diameter. If you keep wethers, use grass hay as their primary forage and add ammonium chloride to their mineral mix to help acidify the urine and prevent stone formation.
Supplementing with oats instead of high-calcium feeds is a safer energy source for males.
How Much Alfalfa to Feed Your Goats
A mature goat eats roughly 2 to 4 pounds of total hay per day. Pregnant and lactating does can eat alfalfa as their primary hay without concern, and growing kids do well on straight alfalfa too.
For bucks and wethers, limit alfalfa to about 25-30% of their total hay intake. Fill the rest with timothy, orchard grass, or bermuda hay.
Alfalfa pellets and cubes are convenient when you want to control portions precisely. They let you add measured protein and calcium without giving unlimited access to loose alfalfa.
You can also look into hay cubes as another way to manage portion sizes.
Mixing Alfalfa With Grass Hay
A 50/50 mix of alfalfa and grass hay works well for most adult goats outside of pregnancy and lactation. This blend provides solid protein without the excess calcium that causes trouble in males.
Grass hay like timothy or orchard grass provides the long-stem fiber that keeps the rumen working efficiently. It also slows fermentation speed compared to straight alfalfa, which reduces the bloat risk significantly.
In winter, when pasture is dormant and browse is gone, a higher proportion of alfalfa helps goats maintain body condition and generate body heat. Adding sunflower seeds to the grain ration provides healthy fats for extra warmth.
Think of grass hay as the foundation and alfalfa as the protein boost you add on top.
Frequently Asked Questions
Yes, alfalfa is one of the most nutrient-dense hays available at 15-22% crude protein. It's the go-to for pregnant does, nursing does, and growing kids, but bucks and wethers should only get it as about 25-30% of their total hay.
Pregnant and lactating does can eat alfalfa as their primary hay. For bucks and wethers, limit alfalfa to about 25-30% of total hay intake and fill the rest with grass hay like timothy or orchard grass.
Male goats should eat alfalfa only in limited amounts. The calcium-to-phosphorus ratio in alfalfa runs about 5:1, which is too high for males and increases the risk of urinary calculi, especially in wethers.
Yes, alfalfa's high calcium content creates a lopsided calcium-to-phosphorus ratio that can lead to urinary stones in male goats. Wethers are at highest risk because castration reduces urethral diameter. Adding ammonium chloride to the mineral mix helps prevent stones.
