I totally agree about keeping all large and giant breeds lean. I have 2 big guys and I am very picky about the way I feed them and how lean they are! My 8 year old Lab still has good mobility and can run like crazy.
I take it you breed Saints? Did you work with a nutritionist for your recipes for the puppies?
I would be highly nervous too about feeding a homemade raw diet to a giant breed puppy, but it sounds like you put a lot of work into it before trying it out on the litter.
Post some pictures if you have any!!
