Is that a 2 or 3 quart scoop? Both are typical here at least
Once or twice a day?
I don't know exactly, but a relatively reasonable guess is 1.25lb/quart for a grain, though of course some are closer to 1, even a little less, some closer to 1.5 or even a little more. If it's 2qt and 1.25lb, that's only 3.75lb, which is not a lot at all for this situation and should probably be increased.
If it's 7.5lb/day, that's a different story
______________________________ The CoTH CYA - please consult w/your veterinarian under any and all circumstances. - ET
Cavalor Perfomix is closer to .75lb per quart. So, this horse may be getting as little as 2.25lb a day of grain if using a 2qt scoop or, if using a 3qt scoop, 3lb a day. Definitely not enough, though. The recommended feeding for a 1100lb horse in light work would be in the 3.75lb to 5.5lb range.
I have a TB gelding in his mid-twenties, and have great success using Cocosoya to keep weight on him. I feed a small amount of grain with his joint/digestive/multivitamin supplements, and a combination of timothy, orchard grass and alfalfa hay. My vet recommenced Su-Per Muscle Builder to help build his topline back up after rest from an injury, and he is a different horse now. I love that it is a simple supplement that really helped to support my conditioning efforts. I can't say enough good things about it!