i dont breed yet but i do know a few people who have weaned their pups right onto a raw diet..Rachel, a Great Dane breeder, feeds raw to all her dogs including her pups, she knows tons about the diet, if you email her im sure she would be more than happy to awnser any of your questions..here's her site http://www.6stardanes.com/
just follow the link that says "send us email"