I'm thinking I am going to continue the all-in-one (munched up alfalfa, oathay and molasses, mostly) but I was thinking of adding a grain. I don't want to feed anything with corn (COB) because he gets fat too easily. I was thinking of adding straight oats, but I've tried that before and it seems to always come out in whole pieces in the poop, and I feel like I'm wasting money. Any opinions on oats? Rolled, crimped, whole, etc? Any processed feeds that might do for keeping weight on an off-work 4 year old without getting him fat? Thanks.