The effect of Aspergillus oryzae fermentation extract on the growth of fungi and ciliate protozoa in the rumen

C.J. Newbold, R. Brock, R.J. Wallace

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

When added to the diet of sheep, 2 g/d, Aspergillus oryzae fermentation extract (AO) stimulated total and cellulolytic bacterial numbers in rumen fluid by 34 and 90% respectively. AO had no effect on the numbers of protozoa or fungal zoospores. AO did not affect hydrogen production by the rumen fungi Neocallimastix frontalis (RE1), N. patriciarum (CX) or Piromonas communis (P) in pure culture or protozoal activity in vitro, estimated from the rate of breakdown of [14C] leucine‐labelled Selenomonas ruminantium. It was concluded that increases in ruminal fibre digestion observed previously in animals fed AO, were most likely due to a stimulation of bacteria rather than eukaryotes in the rumen microbial population.
Original languageEnglish
Pages (from-to)109-112
Number of pages4
JournalLetters in Applied Microbiology
Volume15
Issue number3
DOIs
Publication statusPrint publication - 1992
Externally publishedYes

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Aspergillus oryzae
Rumen
Fermentation
Fungi
Piromyces
Neocallimastix
Selenomonas
Growth
Eukaryota
Digestion
Hydrogen
Sheep
Diet
Bacteria
Population

Bibliographical note

Cited By :12

Export Date: 18 May 2019

Cite this

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abstract = "When added to the diet of sheep, 2 g/d, Aspergillus oryzae fermentation extract (AO) stimulated total and cellulolytic bacterial numbers in rumen fluid by 34 and 90{\%} respectively. AO had no effect on the numbers of protozoa or fungal zoospores. AO did not affect hydrogen production by the rumen fungi Neocallimastix frontalis (RE1), N. patriciarum (CX) or Piromonas communis (P) in pure culture or protozoal activity in vitro, estimated from the rate of breakdown of [14C] leucine‐labelled Selenomonas ruminantium. It was concluded that increases in ruminal fibre digestion observed previously in animals fed AO, were most likely due to a stimulation of bacteria rather than eukaryotes in the rumen microbial population.",
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The effect of Aspergillus oryzae fermentation extract on the growth of fungi and ciliate protozoa in the rumen. / Newbold, C.J.; Brock, R.; Wallace, R.J.

In: Letters in Applied Microbiology, Vol. 15, No. 3, 1992, p. 109-112.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - The effect of Aspergillus oryzae fermentation extract on the growth of fungi and ciliate protozoa in the rumen

AU - Newbold, C.J.

AU - Brock, R.

AU - Wallace, R.J.

N1 - Cited By :12 Export Date: 18 May 2019

PY - 1992

Y1 - 1992

N2 - When added to the diet of sheep, 2 g/d, Aspergillus oryzae fermentation extract (AO) stimulated total and cellulolytic bacterial numbers in rumen fluid by 34 and 90% respectively. AO had no effect on the numbers of protozoa or fungal zoospores. AO did not affect hydrogen production by the rumen fungi Neocallimastix frontalis (RE1), N. patriciarum (CX) or Piromonas communis (P) in pure culture or protozoal activity in vitro, estimated from the rate of breakdown of [14C] leucine‐labelled Selenomonas ruminantium. It was concluded that increases in ruminal fibre digestion observed previously in animals fed AO, were most likely due to a stimulation of bacteria rather than eukaryotes in the rumen microbial population.

AB - When added to the diet of sheep, 2 g/d, Aspergillus oryzae fermentation extract (AO) stimulated total and cellulolytic bacterial numbers in rumen fluid by 34 and 90% respectively. AO had no effect on the numbers of protozoa or fungal zoospores. AO did not affect hydrogen production by the rumen fungi Neocallimastix frontalis (RE1), N. patriciarum (CX) or Piromonas communis (P) in pure culture or protozoal activity in vitro, estimated from the rate of breakdown of [14C] leucine‐labelled Selenomonas ruminantium. It was concluded that increases in ruminal fibre digestion observed previously in animals fed AO, were most likely due to a stimulation of bacteria rather than eukaryotes in the rumen microbial population.

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DO - 10.1111/j.1472-765X.1992.tb00739.x

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SP - 109

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JO - Letters in Applied Microbiology

JF - Letters in Applied Microbiology

SN - 0266-8254

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