3 pounds of beet pulp, 3 pounds of oats, 3 pounds of feed, and 1 pound of calf-manna or soy pellets twice a day and walk him early morning and late evening. Bermuda hay.
If you really want to put the breaks on him,4 beet pulp, 4 oats, one calf manna ( or soy pellets ) and 1/2 pound stabilized rice bran. Twice a day, exercise and grass hay.
Need the protein and some fat to keep them fresh looking.