Nitrogen metabolism of ruminant animals: historical perspective, current understanding and future implications.

摘要: Nitrogen metabolism of ruminant animals has been the subject thousands research publications. Study ruminal and intestinal function continues. The quantitative qualitative importance microbes as a source protein have become apparent in many trials, factors controlling microbial synthesis or growth well degradation dietary explored. Information on supply side ledger (ruminal synthesis, bypass escape protein; digestion) exceeds current knowledge needs for amino acids. Descriptive models N evolved that amalgamate concepts. With future amendments, these systems should prove useful diet formulation to more fully utilize fermentation increase productive efficiency animals. Expanding will permit greater control manipulation processes postruminal digestion.