I think it's a great idea! Sure, it is probably cheaper to buy chicken at the grocery store. But those chickens are raised in nasty, overcrowded coups. It's probably cheaper than buying free-range chicken at the store/farmers' market (I know around here it's about $2/lb for necks and everything else is way more expensive). It's very important for me to purchase ethically raised meat for my dog (I don't even eat meat), so I think it's great!
I think Lori (rawdogranch.com) raises rabbits for her dogs. Maybe she can be of help
ADCH Mikko (USDAA) SCH-B; (NADAC) EAC, EJC, TN-E, TG-E, VerO; (AKC) NAJ, CGC; (NACSW) NW1 - 9 year old GSD