Dr. Pitcairn says in his book, that "most of his dog food recipes don't call for Vitamin A to be supplemented because dogs can make their own Vit A from carotene found in vegetables." So as long as they're getting veggies, Vit A doesn't need to be added.
I don't follow his book exactly because there are some things that I don't do. I don't add vegetable/corn/canola oil...I don't even use those oils myself to cook because of the polyunsaturated fats...They are unstable and can cause free radicals. No thanks! LOL
But as far as the recipes go, they're pretty good.
The thing that gets me is the grains...They say that grains are harder for dogs to digest, but that if they're cooked, grains are digested much easier and they're able to utilize the nutrients from it. What do you think about grains? Do you use grains in your recipes? As of now, I do...