What is an example of an animal byproduct?

An example of an animal byproduct is bone, hide, and gelatin. These products are derived from animals after they have been processed for meat or other primary uses. Byproducts are materials left over after the main products have been extracted and often have significant value in various industries. Bone can be processed to create items such as bone meal or broth, hides can be tanned to produce leather goods, and gelatin is used in food items, pharmaceuticals, and cosmetics.

Milk, while an important product from dairy cows, is not considered a byproduct because it is a primary output of dairy farming. Similarly, eggs are produced specifically for consumption and constitute a primary agricultural product from chickens rather than a byproduct. Fleeces from sheep are also considered primary products as they are harvested intentionally for wool production. In contrast, bone, hide, and gelatin highlight the various uses of all parts of an animal, showcasing how industries can maximize resources and reduce waste.