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In vitro rumen fermentation of soluble and non-soluble polymeric carbohydrates in relation to ruminal acidosis

Darwin, , Barnes, A. and Cord-Ruwisch, R. (2018) In vitro rumen fermentation of soluble and non-soluble polymeric carbohydrates in relation to ruminal acidosis. Annals of Microbiology, 68 (1). pp. 1-8.

Link to Published Version: https://doi.org/10.1007/s13213-017-1307-x
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Abstract

The end-products of dietary carbohydrate fermentation catalysed by rumen microflora can serve as the primary source of energy for ruminants. However, ruminants provided with continuous carbohydrate-containing feed can develop a metabolic disorder called “acidosis”. We have evaluated the fermentation pattern of both soluble monomeric and non-soluble polymeric carbohydrates in the rumen in in vitro fermentation trials. We found that acidosis could occur within 6 h of incubation in the rumen culture fermenting sugars and starch. The formation of lactic acid and acetic acid, either alone or in mixture with ethanol, accounted for high build-up of acid in the rumen. Acidosis resulted even when only 20% of a normal daily feed load for all soluble and non-soluble carbohydrates was provided. DNA-based microbial analysis revealed that Prevotella was the dominant microbial species present in the rumen fluid.

Publication Type: Journal Article
Murdoch Affiliation: School of Engineering and Information Technology
School of Veterinary and Life Sciences
Publisher: Springer Berlin Heidelberg
Copyright: © 2017 Springer-Verlag GmbH Germany and the University of Milan
URI: http://researchrepository.murdoch.edu.au/id/eprint/39778
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