TSC should carry beet pulp. They have it near me. IMO a little skinnier is better than fat. Especially if they arent being worked, or are pleasure horses that don't need to keep those extra calories stored. Fat adds weight, adding extra stress on everything. I keep my mare a little thinner because she has hoof problems and navicular, and being over weight can make them worse. She's about 900-1000lbs 14.3hh so when I say skinney I don't mean ribs poking out. Horses still growing should have a lower body score then a mature horse, because of the stress on growing joints.