Our goat eat just about anything I throw out to them.
They love bread, crackers(of all kinds), fruits and veggies, oatmeal, even tree branches that have fallen--they eat the leave off the branches.
They are on open pasture 24 hrs a day 7 days a week, so they constantly have grass to graze.
They also love pumpkin, squash, watermelon. They eat fallen apples, corn on the cob(stalks and all).
anything I throw out when in the garden...beets, turnips, lettuce, etc.etc.
They eat sunflower plants (heads, stems, seeds).
I only have 2 goats right now, but by no means are they ever short of food. They come running for treats even if by some slim chance I don't have any.