By-product
Animal by-products are parts of an animal that are not typically consumed by humans but can still provide nutritional value for pets, including dogs. These include organs like the liver, kidneys, and lungs, as well as parts such as bones, blood, and fatty tissue.
What it means?
Although animal by-products used in dog food can be rich in nutrients, such as protein, vitamins, and minerals, the rendering process used to manufacture kibble alters or destroys most of those nutrients.
How it applies?
Animal parts deemed inedible for human consumption are often nutritionally beneficial for dogs. Cartilaginous parts like tracheas, aortas, tendons, and ears are excellent sources of collagen, chondroitin, and glucosamine, which are beneficial for joints, inflammation reduction, and even cancer treatment and prevention. The key is that they are correctly processed to maintain their nutrient value.
Additional info?
Air-drying, freeze-drying, and dehydration of animal by-products can create nutritious treats and chews for dogs!