Also he eats lots, he is a thoroughbred so I can't feed him much alf without him becoming very high but his weight is weird he eats two and a half flacks of alf mix twice a day and he has a big belly that gets bigger if he's getting to much feed but his ribs are always showing and his back bone always looks weird. Like it's sicking up way to far or his belly is almost hanging... He's worked very often, he lives on a luxury ranch. The feed is high quality. He has been wormed three times this year. He is up to date on his shots.
Here are two photos one that shows how much his ribs show and the bump in his back and another that shows his conformation better. (ope that the nicer photo is from last year, so the bump is smaller)
Your thoughts are very helpful!!