I feed raw following the raw prey model. I've been very pleased with switching my dogs' diet from premium kibble to raw since switching in June 2007.
I suggest you do research before you change your dog's diet. In this discussion,
Feeding Raw--How to Know He's Eating the Raw Bone Correctly?
I listed links to several raw feeding sites I found helpful.
Do you have a freezer? I'm feeding three adult Rotties raw and need a freezer.