I always give vegetable waste to my rams. They are in paddocks on their own for more than 1/2 the year and seem to be more open to new sensations.
Beans would be good, my rams will even eat spoilt tomatoes and onion leaves.
I keep goats in order to feed orphan lambs, and these guys are an even better target for garden waste.
Between goats, dogs and rams nothing gets wasted around here!