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.
The heart is divided into four chambers that are connected by heart valves. The lower two chambers of the heart are called ventricles. They are separated by a septum into the left ventricle and the right ventricle. The upper two heart chambers are called atria. Atria receive blood returning to the heart from the body and ventricles pump blood from the heart to the body. Due to the force needed to pump blood to the body, ventricles have thicker walls than do atria. The ventricles of the heart function to pump blood to the entire body.