Well some people that have horse with goats feed something called all stock. It's ok it will fill there belts buts it not the best quality. If you feed them together in the same paddock then just tie them seperatly for feeding time and I'd feed the goat, goat feed and feed the filly a good quality equine feed. They can share the same hay and water barrel and mineral block. Just make sure it's horse quality hay and a horse freindly mineral block.
Ok, i think mom and dad would get all stock though, only so we don't spend a lot on the two or they'll say no to the goat(s)
