I have a 2yr.old B gelding that is gangly like a yearling, very long legged and just has that immature look. I am having a hard time getting his hips filled out. His topline is good. I have changed his feed from Safechoice to Progressive Nutrition. This feed has a higher protein and all other vitamins percentage. He gets 3/4# with 2C oats, a small amount of beetpulp and some fat and grass hay twice a day. He gets light work whenever it's not raining. Thanks for any imput.