Abstract
A study was made on the numbers and species of bifidobacteria present in the rumen of calves fed high-roughage and high-concentrate diets. With the roughage ration the bifidobacteria were not detectable in a 10(-3) dilution, whereas with the concentrate ration their number was high, usually in the order of 10(8) to 10(9)/ml of rumen fluid. The species most represented, identified by means of deoxyribonucleic acid-deoxyribonucleic acid hybridization tests, included Bifidobacterium ruminale, Bifidobacterium globosum, and an apparently new species.
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- BAUMAN H. E., FOSTER E. M. Characteristics of organisms isolated from the rumen of cows fed high and low roughage rations. J Bacteriol. 1956 Mar;71(3):333–338. doi: 10.1128/jb.71.3.333-338.1956. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Johnson J. L., Ordal E. J. Deoxyribonucleic acid homology in bacterial taxonomy: effect of incubation temperature on reaction specificity. J Bacteriol. 1968 Mar;95(3):893–900. doi: 10.1128/jb.95.3.893-900.1968. [DOI] [PMC free article] [PubMed] [Google Scholar]
- LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
- Mitsuoka T. Vergleichende Untersuchungen über die Bifidobakterien aus dem Verdauungstakt von Menschen und Tieren (Zugleich die Beschreibung von B, thermophilum nov. spec. und B. pseudolongum nov. spec) Zentralbl Bakteriol Orig. 1969 May;210(1):52–64. [PubMed] [Google Scholar]
- SCHRAMM M., KLYBAS V., RACKER E. Phosphorolytic cleavage of fructose-6-phosphate by fructose-6-phosphate phosphoketolase from Acetobacter xylinum. J Biol Chem. 1958 Dec;233(6):1283–1288. [PubMed] [Google Scholar]
- Scardovi V., Trovatelli L. D., Crociani F., Sgorbati B. Bifid bacteria in bovine rumen. New species of the genus Bifidobacterium: B. globosum n.sp. and B. ruminale n.sp. Arch Mikrobiol. 1969;68(3):278–294. [PubMed] [Google Scholar]
- de Vries W., Gerbrandy S. J., Stouthamer A. H. Carbohydrate metabolism in Bifidobacterium bifidum. Biochim Biophys Acta. 1967 Apr 25;136(3):415–425. doi: 10.1016/0304-4165(67)90001-3. [DOI] [PubMed] [Google Scholar]