The formula for feeding raw is 2-4% of a dog's body weight, a day. A 100 lb dog would need 2-4 lbs a day. They need 80% muscle, 20% organ & 20 % bone. That's it! You will have the healthiest version of your dog possible, by feeding this way!
This site is full of helpful information about feeding a half raw/half kibble diet:
We have found a great site that answers questions about the OFA method of hip evaluation versus the newer more extensive & accurate type of evaluation of Penn Hip. We advocate Penn Hip testing. Please click here to read about both!