This document provides information about animal nutrition, including the definition of nutrition, feed efficiency, balanced rations, and the six essential nutrients (water, carbohydrates, lipids, proteins, minerals, and vitamins) needed to support animal life processes. It explains that proper nutrition is important for growth, reproduction, lactation, body mass, and maturity. Different diets are needed depending on whether the goal is maintenance, growth, reproduction, lactation, or supporting work. A balanced diet providing all essential nutrients is necessary to maintain animal health and efficient production.