Agriculture is the foundation of national economy, and the stockbreeding is an important part of agriculture. The development status of stockbreeding relates not only to national or regional economy but also to people's daily life. There are ancient words that livestock is substance for stockbreeding and feedstuff is lifeblood of livestock. The role so important of feedstuffs to livestock just as that of food to man. Transferences of nutrient material in food chain soil-plant-animal-mankind is basic and fin...