J. Anim Sci.
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J. Anim Sci. 1967. 26:606-612.
© 1967 American Society of Animal Science
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Bloat in Cattle. XI. The Role of Rumen Aerobic (Facultative) Mucinolytic Bacteria1

B. D. Mishra, L. R. Fina, E. E. Bartley and T. J. Claydon

Kansas State University, Manhattan

Abstract

Several aerobic bacterial isolates from the rumen readily utilized bovine salivary mucin as the sole source of organic nutrients. Also, oral saliva drippings were found to be a potential source of aerobic mucinolytic bacteria. Identical twins that received hay before pasturing had fewer aerobic (facultative) mucinolytic bacteria in rumen contents than twin mates receiving pasture only. Rumen contents from bloat-susceptible twins were more mucinolytic than were contents from nonsusceptible twins when inoculated into a saliva substrate. Bloat may occur more readily when mucin concentration in the rumen is lowered by reduced salivation on succulent feeds or by destructive action of mucinolytic bacteria.

Footnotes

1 Contribution No. 632, Department of Dairy and Poultry Science and No. 427, Department of Bacteriology, Kansas Agricultural Experiment Station, Manhattan.




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J. T. Vasconcelos and M. L. Galyean
ASAS Centennial Paper: Contributions in the Journal of Animal Science to understanding cattle metabolic and digestive disorders
J Anim Sci, July 1, 2008; 86(7): 1711 - 1721.
[Abstract] [Full Text] [PDF]


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