In the beef cattle diet, common roughages include hay, silage and grass. Silage is a crop that has been preserved in a moist, succulent condition by partial fermentation in a tight container (silo) above or below ground. The majority of the food cattle eat comes from this type of feedstuffs.
Birds (some dinosaurs) and mammals have a four-chambered heart. The ventricle is divided by a septum into two compartments completely separating oxygenated from deoxygenated blood and delivering the maximum amount of oxygen to the head and body at the most efficient pressure.
Rating Newest Oldest. 1  Technically the atria and ventricles are separated by a structure known as the Cardiac Skeleton (also known as the Fibrous Skeleton of the Heart). This is constructed of collagen and connective tissue and forms what is known as the base of the heart. 2  Left side the mitral (Bicuspid valve) separates the ventricle and atrium.