I've fed my TB gelding one cup of Omega Horseshine for years, and it's been very beneficial for him... hooves, skin, arthritis. I was thinking of putting the other two on this but I'm worried about adding extra fat/calories and doing more harm than good for these extremely easy keepers. They are currently only on hay/grass, and a handfull of beet pulp with a RB. These guys are draft X, so I mean EASY keepers! Any thoughts?