High nutrient availability reduces the diversity and stability of the equine caecal microbiota

Microbial Ecology in Health and Disease

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Title High nutrient availability reduces the diversity and stability of the equine caecal microbiota
Creator Hansen, Naja C. K.
Avershina, Ekaterina
Mydland, Liv T.
Næsset, Jon A.
Austbø, Dag
Moen, Birgitte
Måge, Ingrid
Rudi, Knut
Subject 16S rDNA; caecal microbiota; hay; whole oats; equine
Description Background: It is well known that nutrient availability can alter the gut microbiota composition, while the effect on diversity and temporal stability remains largely unknown.Methods: Here we address the equine caecal microbiota temporal stability, diversity, and functionality in response to diets with different levels of nutrient availability. Hay (low and slower nutrient availability) versus a mixture of hay and whole oats (high and more rapid nutrient availability) were used as experimental diets.Results: We found major effects on the microbiota despite that the caecal pH was far from sub-clinical acidosis. We found that the low nutrient availability diet was associated with a higher level of both diversity and temporal stability of the caecal microbiota than the high nutrient availability diet. These observations concur with general ecological theories, suggesting a stabilising effect of biological diversity and that high nutrient availability has a destabilising effect through reduced diversity.Conclusion: Nutrient availability does not only change the composition but also the ecology of the caecal microbiota.Keywords: 16S rDNA; caecal microbiota; hay; whole oats; equine(Published: 4 August 2015)Citation: Microbial Ecology in Health & Disease 2015, 26: 27216 - http://dx.doi.org/10.3402/mehd.v26.27216
Publisher Microbial Ecology in Health and Disease
Date 2015-08-04
Type info:eu-repo/semantics/article

Format application/pdf
Identifier http://www.microbecolhealthdis.net/index.php/mehd/article/view/27216
Source Microbial Ecology in Health and Disease; Vol 26 (2015)
Language eng
Relation http://www.microbecolhealthdis.net/index.php/mehd/article/view/27216/41395
Rights Copyright (c) 2015 Microbial Ecology in Health and Disease

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