Increasing the flow of protein from ruminal fermentation

RJ Wallace, CJ Newbold, BJ Bequette, JC MacRae, GE Lobley

Research output: Contribution to journalConference article

16 Citations (Scopus)

Abstract

This review summarizes some recent research into ways of improving the productivity of ruminal fermentation by increasing protein flow from the rumen and decreasing the breakdown of protein that results from the action of ruminal microorganisms. Proteinases derived from the plant seem to be of importance to the overall process of proteolysis in grazing animals. Thus, altering the expression of proteinases in grasses may be a way of improving their nutritive value for ruminants. Inhibiting rumen microbial activity in ammonia formation remains an important objective: new ways of inhibiting peptide and amino acid breakdown are described. Rumen protozoa cause much of the bacterial protein turnover which occurs in the rumen. The major impact of defaunation on N recycling in the sheep rumen is described. Alternatively, if the efficiency of microbial protein synthesis can be increased by judicious addition of certain individual amino acids, protein flow from ruminal fermentation may be increased. Proline may be a key amino acid for non-cellulolytic bacteria, while phenylalanine is important for cellulolytic species. Inhibiting rumen wall tissue breakdown appears to be an important mechanism by which the antibiotic, flavomycin, improves N retention in ruminants. A role for Fusobacterium necrophorum seems likely, and alternative methods for its regulation are required, since growth-promoting antibiotics will soon be banned in many countries.
Original languageEnglish
Pages (from-to)885-893
Number of pages9
JournalAsian-Australasian Journal of Animal Sciences
Volume14
Issue number6
DOIs
Publication statusPrint publication - 2001
Externally publishedYes
Event3rd Joint Symposium of Japan and Korea on Rumen Metabolism and Physiology - Miyazaki, Japan
Duration: 1 Oct 20003 Oct 2000

Fingerprint

Rumen
rumen fermentation
Fermentation
rumen
Proteins
proteins
Ruminants
amino acids
ruminants
Amino Acids
proteinases
antibiotics
bambermycin
Bambermycins
Fusobacterium necrophorum
rumen protozoa
Peptide Hydrolases
rumen microorganisms
bacterial proteins
microbial proteins

Keywords

  • Amino acids
  • Ammonia
  • Essential oils
  • Grass proteinases
  • Protein synthesis
  • Rumen

Cite this

Wallace, RJ ; Newbold, CJ ; Bequette, BJ ; MacRae, JC ; Lobley, GE. / Increasing the flow of protein from ruminal fermentation. In: Asian-Australasian Journal of Animal Sciences. 2001 ; Vol. 14, No. 6. pp. 885-893.
@article{491513416e584584ba6953f08955f850,
title = "Increasing the flow of protein from ruminal fermentation",
abstract = "This review summarizes some recent research into ways of improving the productivity of ruminal fermentation by increasing protein flow from the rumen and decreasing the breakdown of protein that results from the action of ruminal microorganisms. Proteinases derived from the plant seem to be of importance to the overall process of proteolysis in grazing animals. Thus, altering the expression of proteinases in grasses may be a way of improving their nutritive value for ruminants. Inhibiting rumen microbial activity in ammonia formation remains an important objective: new ways of inhibiting peptide and amino acid breakdown are described. Rumen protozoa cause much of the bacterial protein turnover which occurs in the rumen. The major impact of defaunation on N recycling in the sheep rumen is described. Alternatively, if the efficiency of microbial protein synthesis can be increased by judicious addition of certain individual amino acids, protein flow from ruminal fermentation may be increased. Proline may be a key amino acid for non-cellulolytic bacteria, while phenylalanine is important for cellulolytic species. Inhibiting rumen wall tissue breakdown appears to be an important mechanism by which the antibiotic, flavomycin, improves N retention in ruminants. A role for Fusobacterium necrophorum seems likely, and alternative methods for its regulation are required, since growth-promoting antibiotics will soon be banned in many countries.",
keywords = "Amino acids, Ammonia, Essential oils, Grass proteinases, Protein synthesis, Rumen",
author = "RJ Wallace and CJ Newbold and BJ Bequette and JC MacRae and GE Lobley",
year = "2001",
doi = "10.5713/ajas.2001.885",
language = "English",
volume = "14",
pages = "885--893",
journal = "Asian-Australasian Journal of Animal Sciences",
issn = "1011-2367",
publisher = "Asian-Australasian Association of Animal Production Societies",
number = "6",

}

Increasing the flow of protein from ruminal fermentation. / Wallace, RJ; Newbold, CJ; Bequette, BJ; MacRae, JC; Lobley, GE.

In: Asian-Australasian Journal of Animal Sciences, Vol. 14, No. 6, 2001, p. 885-893.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Increasing the flow of protein from ruminal fermentation

AU - Wallace, RJ

AU - Newbold, CJ

AU - Bequette, BJ

AU - MacRae, JC

AU - Lobley, GE

PY - 2001

Y1 - 2001

N2 - This review summarizes some recent research into ways of improving the productivity of ruminal fermentation by increasing protein flow from the rumen and decreasing the breakdown of protein that results from the action of ruminal microorganisms. Proteinases derived from the plant seem to be of importance to the overall process of proteolysis in grazing animals. Thus, altering the expression of proteinases in grasses may be a way of improving their nutritive value for ruminants. Inhibiting rumen microbial activity in ammonia formation remains an important objective: new ways of inhibiting peptide and amino acid breakdown are described. Rumen protozoa cause much of the bacterial protein turnover which occurs in the rumen. The major impact of defaunation on N recycling in the sheep rumen is described. Alternatively, if the efficiency of microbial protein synthesis can be increased by judicious addition of certain individual amino acids, protein flow from ruminal fermentation may be increased. Proline may be a key amino acid for non-cellulolytic bacteria, while phenylalanine is important for cellulolytic species. Inhibiting rumen wall tissue breakdown appears to be an important mechanism by which the antibiotic, flavomycin, improves N retention in ruminants. A role for Fusobacterium necrophorum seems likely, and alternative methods for its regulation are required, since growth-promoting antibiotics will soon be banned in many countries.

AB - This review summarizes some recent research into ways of improving the productivity of ruminal fermentation by increasing protein flow from the rumen and decreasing the breakdown of protein that results from the action of ruminal microorganisms. Proteinases derived from the plant seem to be of importance to the overall process of proteolysis in grazing animals. Thus, altering the expression of proteinases in grasses may be a way of improving their nutritive value for ruminants. Inhibiting rumen microbial activity in ammonia formation remains an important objective: new ways of inhibiting peptide and amino acid breakdown are described. Rumen protozoa cause much of the bacterial protein turnover which occurs in the rumen. The major impact of defaunation on N recycling in the sheep rumen is described. Alternatively, if the efficiency of microbial protein synthesis can be increased by judicious addition of certain individual amino acids, protein flow from ruminal fermentation may be increased. Proline may be a key amino acid for non-cellulolytic bacteria, while phenylalanine is important for cellulolytic species. Inhibiting rumen wall tissue breakdown appears to be an important mechanism by which the antibiotic, flavomycin, improves N retention in ruminants. A role for Fusobacterium necrophorum seems likely, and alternative methods for its regulation are required, since growth-promoting antibiotics will soon be banned in many countries.

KW - Amino acids

KW - Ammonia

KW - Essential oils

KW - Grass proteinases

KW - Protein synthesis

KW - Rumen

U2 - 10.5713/ajas.2001.885

DO - 10.5713/ajas.2001.885

M3 - Conference article

VL - 14

SP - 885

EP - 893

JO - Asian-Australasian Journal of Animal Sciences

JF - Asian-Australasian Journal of Animal Sciences

SN - 1011-2367

IS - 6

ER -