Teen Forum Moderator
Join Date: Dec 2010
Location: South East Texas
We had an OTTB mare, a little bit older than yours, who was about 200 lbs underwight because of poor food and severe intestinal and stomache ulcers. It took her about four months to gain all of the necessary weight (especially because about 30 of the last pounds were needed in muscle, not fat) and maintain it. We have her free access to alfalfa/timothy hay and grazing, and she was eating almost a 40 lb bale daily. She was on 7 lbs Purina Senior at first but after she was diagnosed with the ulcers we removed about half of that and started feeding a pound of rice bran, aloe, slippery elm bark, Smartpaks, and salt.
I wouldn't reduce your horse's feed unless he starts looking like he's gaining weight too fast or is getting overweight after his ribs and spine are covered. Our mare still eats the same amount as when she was being rehabilitated, though she self-adjusted her hay intake to 25 lbs of hay daily. You'll just have to judge what to do based on his specific body metabolism.
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