Protein supply from undegraded dietary protein

Journal of Dairy Science
L D Satter

Abstract

A summary of in vivo estimates of the amount of dietary protein from individual feedstuffs that escapes microbial degradation in the rumen is presented. Values range from approximately 20% for protein in barley, oats, wheat, and alfalfa silage to 65 to 70% for protein in fish meal and animal by-products. In vitro or in situ methods for estimating protein degradation can be used, but at this stage of development, the methodology is more useful in providing a relative ranking of feedstuffs on the basis of protein degradation than in providing absolute estimates of protein degradation. A number of factors influence protein breakdown in the rumen, including extent of crosslinking in the protein (disulfide bonds), retention time in the rumen, protein solubility, and processing and storage effects on protein. It is important to consider the amino acid content of the undegraded dietary protein, particularly lysine and methionine, two amino acids likely to be limiting for milk production. Strategies for using protected proteins in dairy cattle diets are discussed.

References

Jun 1, 1979·Journal of Animal Science·M I PoosT J Klopfenstein
Jan 1, 1978·Journal of Animal Science·E C PriggeR R Johnson
Jul 1, 1976·Journal of Dairy Science·C G SchwabB Clay
Sep 1, 1973·The Proceedings of the Nutrition Society·E L Miller
Jan 1, 1972·The British Journal of Nutrition·J V Nolan, R A Leng
May 1, 1971·The British Journal of Nutrition·G W Mathison, L P Milligan
Feb 1, 1983·Journal of Animal Science·D C WeakleyL D Satter
Mar 1, 1983·Journal of Animal Science·R A Zinn, F N Owens
May 1, 1984·Journal of Dairy Science·R A Leng, J V Nolan
Jun 1, 1981·Journal of Dairy Science·J T Huber, L Kung
Jan 1, 1982·Journal of Community Health·B J Kay, J A Myrick
Apr 1, 1981·Journal of Animal Science·R A ZinnR W Hemken
Sep 1, 1981·The British Journal of Nutrition·D E BeeverR A Terry

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Citations

Apr 1, 1993·Journal of Dairy Science·R L Ireland-Perry, C C Stallings
Oct 26, 2000·Journal of Dairy Science·R D Shaver, M A Bal
Sep 1, 1993·Journal of Dairy Science·P C HoffmanD K Combs
Aug 26, 1998·Journal of Dairy Science·A ArieliH Tagari
Sep 1, 1992·Journal of Dairy Science·W M SeymourJ H Herbein
Oct 1, 1991·Journal of Dairy Science·P C HoffmanT R Drendel
May 1, 1989·Journal of Dairy Science·M A FaldetG D Adams
Nov 1, 1986·Journal of Dairy Science·G A Broderick
Jun 1, 1989·Journal of Dairy Science·R Herrera-Saldana, J T Huber
Aug 1, 1992·Journal of Dairy Science·E J DePeters, J P Cant
Mar 25, 2005·Journal of Animal Physiology and Animal Nutrition·E SolanasJ A Guada
May 23, 2018·Journal of Animal Science and Technology·Mônica Feksa FrassonWilliam Soares Teixeira
Sep 1, 1991·Journal of Dairy Science·C E PolanB Guillaume
Oct 17, 2019·Animals : an Open Access Journal From MDPI·Jian MaXiong Yu

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