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THE NORMAL FLORA OF THE BOVINE RUMEN. IV. QUALITATIVE STUDIES OF LACTOBACILLI FROM COWS AND CALVES
Author(s) -
PERRY K. D.,
BRIGGS C. A. E.
Publication year - 1957
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1957.tb04528.x
Subject(s) - rumen , hay , lactobacillus acidophilus , biology , zoology , lactobacillus casei , food science , bacteria , probiotic , fermentation , genetics
SUMMARY: Two hundred and four samples of rumen contents were taken from eight fistulated cows receiving various diets, and seventy‐one samples from twelve calves. From dilution counts of these samples, 91 isolates of Gram‐positive catalase‐negative rods were obtained, and by means of physiological and serological tests, 78 (95%) out of 82 lactobacilli were characterized as follows: Lactobacillus fermenti (33 strains), L. acidophilus (21), L. casei (17) and L. plantarum (7). Indications were obtained of progressive establishment of lactobacilli in the rumen of the growing calf, L. fermenti predominating. In the cow, L. acidophilus was generally associated with hay plus concentrates diets and L. casei with silage, whereas with grass small numbers of several species of lactobacilli were found.