| Alterations in microbiota and fermentation products in equine large intestine in response to dietary variation and intestinal disease. | |
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MedLine Citation:
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PMID: 21816118 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We aimed to determine the effects of variations in dietary composition on equine gut microbiota and their fermentation products, and proposed that dietary modifications profoundly affect microbial ecosystems and their metabolites. Bacterial communities within the large intestine of three groups of horses were compared using oligonucleotide-RNA hybridisation methodology. Each group consisting of six horses was maintained on (1) a grass-only diet, (2) a concentrate diet (i.e. supplemented with hydrolysable carbohydrates) and (3) a concentrate diet but horses were affected by simple colonic obstruction and distension (SCOD), a prevalent form of dietary-induced intestinal disease. We show that in response to dietary change and intestinal disease, there is a progressive and significant increase in Lachnospiraceae, the Bacteroidetes assemblage and the lactic acid-producing, Bacillus-Lactobacillus-Streptococcus (BLS) group. In contrast, there is a corresponding decrease in the proportion of obligate fibrolytic, acid-intolerant bacteria, Fibrobacter and Ruminococcaceae. Assessment of monocarboxylic acids indicated that there are significantly higher concentrations of lactic acid in the colonic contents of horses maintained on a concentrate diet and those suffering from SCOD, correlating with the observed increase in the population abundance of the BLS group. However, the population size of the Veillonellaceae (lactate utilisers) remained constant in each study group. The inability of this group to respond to increased lactic acid may be a contributory factor to the build-up of lactic acid observed in horses fed a concentrate diet and those suffering from SCOD. |
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Authors:
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Kristian Daly; Christopher J Proudman; Sylvia H Duncan; Harry J Flint; Jane Dyer; Soraya P Shirazi-Beechey |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-5 |
Journal Detail:
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Title: The British journal of nutrition Volume: - ISSN: 1475-2662 ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372547 Medline TA: Br J Nutr Country: - |
Other Details:
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Languages: ENG Pagination: 1-7 Citation Subset: - |
Affiliation:
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Epithelial Function and Development Group, Department of Cellular and Molecular Physiology, Faculty of Health and Life Sciences, University of Liverpool, Brownlow Hill, Liverpool L69 7ZJ, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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