I have a 11 year old QH around 15.3 hands but she is basically half Thoroughbred (every QH was half QH and Thoroughbred then was bred with a pure Thoroughbred then bred with a half QH and Thoroughbred). Just a little background. So I know Thoroughbreds have a harder time keeping muscle on them and fat. Her hip bones and ribs show a little bit but not bad. When I first got her she weighed 1167 lbs (give or take) then about a month or so later she weighed 1096 lbs. I grain her every night with corn oil, Dynasty Pro (higher fat grain), hoof care supplements, and mineral/vitamin supplement. I also ride her a lot to try to build better muscles on her because I want to show her in western pleasure classes and halter but she needs a lot more weight and muscle. Its so difficult to keep it on her. She burns more then she eats almost. I am getting alfalfa grass for her this winter because pure grass hay will not keep her weight for the winter. Does anyone know of any weight gain supplements that work great and also muscle powers or supplements that help develop muscles better? I was looking at Farnam Weight Builder and AniMed Muscle-UP Power but I am not sure yet. Any thoughts on those products or more?