The liver has the same function in pigs as it does in all mammals, including the secretion of a digestive fluid called bile, the destruction of old red blood cells and the storage of substances such as vitamins and glycogen. It also aids in the removal of toxic matter from the blood.

The liver plays an important role in mammalian digestion, according to The liver assists in the creation of protein building blocks called amino acids. It aids in fat digestion and production as well, making it vital for the function of a pig's organs.

The liver also serves a role as the energy center of a pig's body. It converts sugars into glycogen, which is far more efficient for storage. The liver then controls the sugar stores and releases them to provide fuel for the body.

Bile production is another important aspect of mammalian liver function. Bile contains bile salts, bilirubin cholesterol, water and inorganic salts. Bile has many functions, from helping the body digest foods and absorb fat-soluble vitamins to assisting in the elimination of waste products from the body. Bile is antibacterial and destroys harmful bacteria in food, which is especially important for an animal that eats just about everything in sight.