It is made up of amino acids, which are based on nitrogen, and used to grow or replace muscles, blood cells, and many other tissues in the body. It is very important that dogs, and especially cats, get enough of certain types of amino acids. One of the problems with cheap protein sources is that they are often deficient in required amino acids. Pets who are growing or recovering from injuries or illness need more protein. The protein sources in Dr. Strombeck's diets are beef, lamb, fish, chicken, eggs, tofu and cottage cheese.
Carbohydrates are mainly a source of energy.
Excess protein can also be converted to energy. Dogs who are working hard need more energy. The carbohydrate sources he recommends are rice, potatoes, tapioca and macaroni. Most of the diets include a little vegetable oil, maybe some salt, some bone meal for calcium and phosphorous, and a multiple vitamin-mineral tablet. The correct balance of vitamins and minerals is critical.