While Dr. Billinghurst's first two books are more oriented to dogs, his third book, The BARF Diet, also includes info and instructions for putting together recipes for cats.
The website Holisticat.com is also a source of info on feeding cats a natural diet and I printed out quite a bit of info from links on that list at one time...will have to see if I can find that folder. Both Dr. Eugene Pitcairn (Eugene, OR) Natural Health Care for Dogs and Cats and Dr. Martin Goldstein (South Salem, New York) The Nature of Animal Healing have sections in their books devoted to providing a healthy, naural diet for pets. Dr. Goldstein mentions in his book a vet, Dr. Ihor Basko (Hawaii), who has developed a special diet for FeLV+ kittys. There is an excellent Source Guide in the back of Dr. G's book. I recommend it highly. I have another book, Four Paws, Five Directions, by Dr. Sheryl Schwartz (San Francisco, CA) dealing with TCM and accupuncture/accupressure for pets and there is a lot of info there about using different foods therapeutically...TCM classes foods as "warming," "cooling," and "neutral" with regard to how they affect the bodily processes and "chi" or life force. Sally in San Jose