The primary food source for ruminants consists mainly of fibrous plant material, particularly grasses, and other herbaceous plants. Ruminants are animals defined by their unique digestive system, which includes a multi-chambered stomach allowing them to break down tough plant fibers efficiently. The primary chambers involved are the rumen, reticulum, omasum, and abomasum. By initially fermenting plant material in their rumen with the help of microorganisms, ruminants can extract the necessary nutrients. Common examples of ruminants include cows, sheep, and goats, which play significant roles in agriculture for meat, milk, and wool production.