I have a few words about raising rabbits, quail, ducks and chickens for meat. BTDT. Each of those endeavors require certain basics, and the best place to start is with good books. When the critters are concentrated into small areas for maximum production, good feed and care is essential. Rabbits don't breed like rabbits if they don't have consistent quality feeds - and if they are raised in dark areas such as common in northern states in winter. I got the needed litters by using assisted daylight to keep them at 14-16 hours of light per day, especially in mornings. However, I lost many winter litters due to the cold or inexperienced does not making proper nests in nest boxes. I learned to skip February kindlings for the sake of my mental health! None survived. Dog got the tiny pupsicles.
Quail were a fun endeavor. I incubated the tiny eggs in an aquarium with overhead heat. Like all "production" methods, I marked eggs as they went in; so could keep track of the anticipated hatchings every 17 days. Then I transfered the baby bumblebees to a heated brooder box and kept the lights low. Babies raised in dim light grew faster and meatier. But I hated ringing 6-week old maturing quail almost as much as I hated debeaking them. Why? Intensively managed quail turn cannibalistic. The dark meat is, however, delicious for the few bites per carcass. I wanted quail meat more than the dog.
Chickens needed a high protein diet (not as high as quail) and winter lights for off season laying. Dogs got frozen eggs that were split.
But I developed feather allergies even from my foraging chickens; so I decided to raise ducks. Not Indian Runners and other duck-type ducks - too noisy. I settled on Muscovies. They were prolific, large, good brooders and could wander the property w/o needing any special fencing or setup. Nor were they as greasy as regular ducks and geese. Every late summer and fall, we butchered some for the table (did I mention you need pliers for wing feathers?) and got a good penny for the ones we sold. Our dog was raised on goat milk, entrails and waste products from our animal endeavors, as well as table scraps. Our current dogs, many years and miles away from then, get raw chicken drumsticks pork neck bones and a good dry dog food. It's expensive, being 100% store bought. We shan't mention the road killed deer we hauled home a few years ago for one dog - harvesting road kill is illegal here.
I'd like to emphasize that decent livestock/poultry books helped me identify and head off potential problems right from the start. Experience filled in the gaps in my knowledge. But I never attempted to raise any livestock for my animals to eat - my growing family were always the primary beneficiaries of my work, the carnivorous critters way down the list.