Zinc is one of the essential trace elements in animal body, and is a component of various metalloenzymes. It is called "life element" because of its extensive physiological and biochemical functions in the body. Zinc is a component of various enzymes in livestock and poultry, which plays an important role in the normal growth and development of livestock and poultry fur and bones, reproductive function, the development of taste system and the normal function of cardiovascular system. It is an essential element for maintaining fur growth, skin health and tissue repair..