Abstract:
〖WT5”HZ〗〓〓Abstract:〖WT5”BZ〗To improve the production efficiency of ruminants, it is important to study nourishment of carbohydrate for ruminal animals because there is above 70% carbohydrate in thier diets. In recent years, the studies of ruminal animal nutrition on carbohydrate focused on the classification of carbohydrate according to the degradation situation of feed in the rumen, the digestion characteristic of starch, the effect of neutral detergent fiber contained and diets components on feed digestion, the effect of feed physical characteristic on the ruminal fermentation, the requirements of carbohydrate for ruminal animals, the development and utilization of carbohydrate feed sources. This article reviewed the classification of carbohydrate in feed, the nutrition of nostructure carbohydrate and structure carbohydrate, the nutrition of carbohydrate relating with physical property, the requirement of carbohydrate for ruminants, the research and development of raw material for cow, beef cattle and other ruminal animals. In the future, there will be more researches focusing on to study the carbohydrate physiological function, action mechanism, regulative mechanism, metabolic pathways and so on by using the molecular biology technology. There will also be various researches on learning the effect of new carbohydrate feed resources feed with ruminal animals.

Key words: carbohydrate; nutrition; ruminant