There are literally thousands of message boards out there, maybe you could look for one where people have 'dual purpose' animals? By dual purpose I mean that they have some as pets and some are raised for food. People that raise their bunnies for meat might have a better idea what to feed them for the table, than the ones that just keep them as pets.
The sheep message board that I belong to, some have sheep as pets, some breed for wool, some breed for the show ring, some breed for the meat market, some breed for their own freezer. Everyone has their own reasons for owning their sheep. The one thing that everyone has in common is, regardless of the purpose of the sheep, everyone loves their animals and gives them the very best of care. Just like you with your bunnies. Just because you eat the animals you raise, doesn't mean you don't love them, respect them and care for them.
I can't raise my own meat, but I have the utmost respect for anyone who can. The only way I could do it would be to have a large property, not form any attachment to the animals, the one for my freezer disappears when I'm at work one day and comes back in plastic bags. If someone said they were doing a few lambs this weekend and asked if I wanted one, of course I'd say yes, but if they told me to go into the paddock and pick one, not a chance in the world! I used to have no problems, but the older I get, the softer I get. I wish I could raise my own meat, then I'd know it had a good life until the end. But I can't. It doesn't make me a bad person, but it does make me feel guilty for supporting animal cruelty.
Just as an aside, while we're on the subject, I wondered how you knew you were getting the animal back that you sent away, if you send them away for processing. Apparently there are laws about that kind of thing, with very stiff penalties, and the animal is marked as being a privately owned animal, so it's kept separate from the other ones. Just in case anyone was wondering.....
Jane