Which statement best describes the polygastric digestion concept?

• A. They have four stomach compartments that aid digestion
• B. They have a single stomach
• C. They digest fats only
• D. They do not digest cellulose

Answer: (A)

Polygastric digestion refers to animals that have a multi-chamber stomach, which enables microbial fermentation of fibrous plant material. In these animals the stomach is divided into four compartments—rumen, reticulum, omasum, and abomasum—providing a specialized environment where microbes break down cellulose and other fibers. This fermentation produces volatile fatty acids that the animal can use for energy, which is why these animals thrive on fibrous feeds that monogastric (single-stomach) systems struggle with. The concept isn’t about digesting fats only, and it’s not accurate to say they don’t digest cellulose; in fact, cellulose digestion is a hallmark of this system.