反刍动物瘤胃降解蛋白利用的研究进展OA

Ruminant production is confronted with the dual challenge of a shortage of protein feed resources and low nitrogen-utilization efficiency.The traditional crude-protein system fails to match the animal's actual requirements for metabolizable protein and amino acids with adequate precision.Rumen-degradable protein,the principal nitrogen source for microbial protein synthesis in the rumen,is therefore a key lever for regulating nitrogen-metabolism efficiency in ruminants.This paper synthesizes global advances in rumen-degradable protein research for ruminants,outlines its classification scheme,intraruminal metabolic fate and major assay methods,and systematically reviews how its supply level affects animal growth and health,thereby providing a theoretical reference for the precise formulation of low-protein diets for meat sheep in China.