Weight Gain Supplements for Horses

Adding fat to the diet is the safest and most effective way to put weight on a hard keeper. Fat delivers more than double the calories of an equal amount of grain, so you're feeding more energy without the digestive strain or jittery behavior that comes with a big starch increase.

• Rice bran or wheat germ oil: concentrated fat sources that also add shine to the coat.
• Cocosoya-style blends: combine coconut and soybean oil for easier digestibility than plain vegetable oil.
• Dedicated weight gain formulas: pair fat with protein and minerals in one measured scoop.
• Slow, steady increases: build up over one to two weeks instead of jumping straight to a full dose.

Yes, rice bran oil is one of the more dependable calorie sources for weight gain in horses. It's naturally high in fat and contains gamma-oryzanol, a compound tied to muscle support, and just one gallon delivers roughly the same fat content as 36 pounds of rice bran.

Most fat-based weight supplements are fed in the range of 2 to 8 ounces daily, usually split into two feedings, though the right amount depends on the product's concentration and your horse's size and workload. Always start at the low end of the label and increase gradually so the gut has time to adjust.

No, high-calorie weight gain supplements should not be given to severely emaciated or rescued horses without a veterinarian guiding the process first. Long-term nutrient deprivation changes how the digestive system functions, and introducing rich, high-fat supplements too soon can cause more harm than the weight loss itself.

Fat supplements add calories to help a horse gain and hold overall body weight, while muscle-building supplements lean on amino acids and compounds like gamma-oryzanol to target lean tissue specifically. A horse with a poor topline or thin body condition often does best on a combination of both rather than just one.

• Fat-based products: rice bran oil, wheat germ oil, and similar blends add dense calories with very little bulk.
• Muscle-focused formulas: ingredients like gamma-oryzanol, BCAAs, and creatine orotate target lean development rather than general weight.
• Combination formulas: some weight gain products blend fat, protein, and amino acids into a single daily feeding.

No, fat-based calories generally don't trigger the excitability that a big increase in grain or starch can cause. Since fat is processed differently by the body than sugar and starch, most horses pick up the extra calories they need for weight gain without the behavior changes owners tend to associate with heavy grain feeding.