LHP, and OP: the equine digestive system is quite different from the human one and upon reading most recent literature on weight gain, maintenance and performance the number one thing recommended is fat. Oats, sweet feed and corn are all high in starch (a complex sugar) and sugar. Not fat.
Posted via Mobile Device
I wholeheatedly agree with that statement when the animal in question is mature and fully developed. On an immature, undermuscled, underdeveloped horse, you cannot build up meat and support skeltal growth with fats.