In doing research on canine nutrition for the other threads on the Nutriscan test, I came across a blockbuster article coauthored by Dr. Rebecca Remillard titled "Handling Alternative Dietary Requests from Pet Owners." Here is the full citation:
Parr, JM and Remillard, RL. 2014. Handling Alternative Dietary Requests from Pet Owners. Vet Clin Small Anim 44:667–688.
The link to the article is here, but it's probably behind a paywall for most people:
Handling Alternative Dietary Requests from Pet Owners
The article is about how conventional veterinarians can assess alternative diets (non-kibble or non-canned foods, or brands they haven't worked with) to determine whether they are nutritionally complete. The article provides web resources for both the lay person and for the veterinary professional on sound pet nutrition. I highly recommend this article as an introduction to canine nutrition and how to evaluate your dog's diet, whether you are feeding them kibble, canned, raw, or home cooked.