不同能氮水平对反刍动物瘤胃发酵的影响.

The study of nutrient metabolism of ruminants is inseparable from the study of rumen fermentation. In recent years, the prices of corn and soybean meal are high, and often rely on imports. In order to avoid human and animal competition for food, in the environment of cost saving and efficiency, people are seeking precision nutrition. Dietary energy and protein levels are important for ruminants to maintain normal physiological requirements and ensure rumen fermentation. Volatile fatty acids are the main products of rumen fermentation and important substances of energy metabolism in ruminants, and microbial proteins in rumen provide the main protein nutrition for ruminants. Therefore, the effects of different energy nitrogen levels on rumen fermentation in ruminants were reviewed in this paper from two aspects (energy to nitrogen ratio and simultaneous release of energy to nitrogen), so as to provide reference for formulating precise diets. [ABSTRACT FROM AUTHOR]