We keep a number of purebred Californian and purebred New Zealand White rabbits in our herd to keep the genetics, however, most of our meat rabbit breeders are a hybrid of the two breeds.  Our breeders are chosen for good health, good body condition, litter size, and kit growth rates.  Once we have all of those genetic factors sorted, we will be only choosing the nicest, calmest rabbits with a good demeanor.