Even on pasture, hay should be offered when trying to put weight on the horse. I don't know exactly why it works better than green grass, but it does. Our farrier recommended it. The daughter was feeding her emaciated mare sweet feed until I learned of the beet pulp thing. Now we feed all of our horses a mixture of beet pulp and alfalfa pellets (tried the cubes, but they wouldn't eat them as well). I would add the rice bran, but it's a special order item around here (feed store clerk had never even heard of it) and it's very expensive. We also keep plenty of good grass hay out. The mare has put on about 75 - 100 pounds in the month since we changed out the feed program. The other horses are looking better, too. My mare didn't need to gain any weight, but she also doesn't seem to have put on any since we changed out the feed. We don't feed the others quite as much as the two "skinny" ones, but all are doing well. I'm so pleased! Now, if I could just figure out how to keep their hooves from chipping, I'd be ecstatic!
Plain Old Dee, horses Dancer and Rain I believe in dragons, unicorns, good men and other mythical creatures!