Animal Science 2 CFE Practice Exam

Ruminants have a multi-chambered stomach designed for fermenting fibrous plant material. The foregut fermentation that occurs in the rumen and reticulum allows microbes to break down cellulose, turning roughage into volatile fatty acids that provide most of the animal’s energy. Chewing cud further aids this microbial digestion, while the omasum and abomasum continue digestion and absorption, with the abomasum acting as the true stomach. This multi-compartment setup is what makes digestion efficient for high-fiber forages, so having several compartments to digest is the best description. The other ideas—having a single stomach, digesting only animal protein, or lacking stomach compartments—don’t fit ruminant anatomy.