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Influence of the rumen anaerobic fungus Neocallimastix frontalis on the proteolytic activity of a defined mixture of rumen bacteria growing on a solid substrate
Author(s) -
WALLACE R. J.,
MUNRO CAROL A.
Publication year - 1986
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1986.tb01539.x
Subject(s) - rumen , fungus , bacteria , microbiology and biotechnology , biology , food science , anaerobic exercise , chemistry , fermentation , botany , physiology , genetics
A grass + fishmeal ruminant feed was incubated for 7 d in a mineral salts medium with the non‐proteolytic rumen bacteria Bacteroides succinogenes, Ruminococcus flavefaciens, Megasphaera elsdenii and proteolytic strains of Bacteroides ruminicola, Selenomonas ruminantium and Streptococcus bovis in the presence and absence of the anaerobic fungus Neocallitnastix frontalis . The fungus increased the dry matter digestion from 65·0 to 69·4%, and more than doubled the proteolytic activity of the culture filtrate. However, a greater difference was observed with the solid material, where the proteolytic activity increased from 0·71 to 6·89 mg 14 C‐casein hydrolysed/g/h, due mainly to EDTA‐sensitive fungal protease.