I honestly don't know but I'm sure someone on here will know.
But I will be interested to see what they say. Because if I were doing it I'd slowly switch from kibble to raw. I have absolutely no real reason or facts to back it up, it's just my opinion.
I've always been a bit "scared" of the idea to feed raw. Since their are so many "what if's" But of course there's many dogs that do great on raw.