My husband & I bought a stud horse in Feb. from a man that was unable to take care of him anymore, when we got him his hooves had never been trimmed & were curved upwards. We’ve trimmed his hooves & let him bred a couple of our mares, but we can’t seem to keep weight on him. We have wormed him, given him calf manna, oats, rice, sweet feed, we put him in a shorter pin thinking he wouldn't "pace" the weight off, we've kept the "hot" mares away from him, but still he keeps losing weight any ideas???