When feeding a home cooked diet, you will be required to add supplements, just as pet food manufacturers must. Most commonly, home-prepared diets are deficient in certain minerals such as calcium and zinc. These and all other vitamins and minerals will be accounted for in the correct amounts for each individual dog, and in the appropriate ratios.
Other necessary vitamins and minerals will be added to your dog’s dietary plan in the required amounts if they are not provided through food alone. Certain conditions such as kidney disease, oxalate stones, heart disease etc… require particular substances be adjusted from the levels required by healthy dogs.
Whether you’re feeding a fresh diet or a commercial diet, one of the most valuable supplements you can include in your dog’s diet is Omega 3 Fatty Acids. There are several high quality products available, but the most commonly used oil is Wild Salmon Oil. It’s important to obtain this from a “wild,” high-quality source. Omega 3s have an anti-inflammatory affect throughout the entire body, reduce the risk of chronic disease, and are also crucial to cognitive health. 50 to 100 mg per kilogram of body weight is generally safe. Again, care is taken to ensure they’re provided in the correct amount and ratio.
Other natural, or non-essential supplements (i.e. Milk Thistle, L-Glutamine, Sam-E, etc.) are often recommended when there is science to support their case as complimentary to a particular condition/disease/concern.