Meat: Meat is the clean flesh of slaughtered animals (chicken, cattle, lamb, turkey, etc.). The flesh can include striated skeletal muscle, tongue, diaphragm, heart, esophagus, overlying fat and the skin, sinew, nerves and blood vessels normally found with that flesh.
Meat By-products: Meat by-products are clean parts of slaughtered animals, not including meat. These include lungs, spleen, kidneys, brain, liver, blood, bone, some fatty tissue, and stomach and intestines freed of their contents. It does not include hair, horns, teeth, or hooves.
Poultry By-products: Poultry by-products are clean parts of slaughtered poultry such as heads, feet, and internal organs (like heart, lungs, liver, kidneys, and intestines). It does not contain feathers.
Fish Meal: Fish meal is the clean ground tissue of undecomposed whole fish or fish cuttings, with or without the oil extracted.
Ground Corn: Ground corn is the entire corn kernel ground or chopped.
Corn Gluten Meal: Corn gluten meal is the by-product after the manufacture of corn syrup or starch, and is the dried residue after the removal of the bran, germ, and starch.
Brewers Rice: Brewers rice is the small fragments of rice kernels that have been separated from larger kernels of milled rice.
Brown Rice: Brown rice is the unpolished rice left over after the kernels have been removed.
Soybean Meal: Soybean meal is a by-product of the production of soybean oil.
BHA: BHA is butylated hydroxyanisole, a fat preservative.
Ethoxyquin: Ethoxyquin is a chemical preservative that is used to prevent spoilage in dog food.
Tocopherols: Tocopherols (e.g., vitamin E) are naturally occurring compounds used as natural preservatives.
The AAFCO standards
'AAFCO' stands for the Association of American Feed Control Officials. The AAFCO develops guidelines for the production, labeling, and sale of animal foods. These are called the AAFCO standards. AAFCO has developed two standards which pet foods should meet. Pet foods which meet the AAFCO's requirements will include one of two statements on their label.
The first standard states ''...is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for...'. This means the food was tested in the laboratory and was found to have the recommended amounts of protein, fat, etc. But as mentioned above, the combination of shoe leather, used motor oil, and coal would meet this standard.
The second standard states something like 'Animal-feeding tests using AAFCO's procedures substantiate that this product provides complete and balanced nutrition for...'. For a pet food to be able to carry this label, it had to be tested on a population of animals and shown to provide adequate nutrition. But even with this statement, there are problems with its interpretation. If one particular product in a manufacturer's line was tested and found to meet this standard, the company is allowed to include this same statement on other products in the same 'family' which provide equal or greater concentrations of all the nutrients. So even if the pet food carries this AAFCO food trial statement on its label, you can not be sure that specific product was actually tested in a food trial. In addition, the food is tested in adult dogs for 6 months and in puppies for 10 weeks. This may not be an adequate amount of time to determine if deficiencies or other long term effects may occur after feeding the product a year or more. Despite these problems with the interpretation of this AAFCO food trial statement, having the statement on a pet food label at least shows the company has made some attempt to develop a good food.