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. 2018 Jan 9;9:11. doi: 10.1186/s40104-017-0216-y

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Caecal microbiota composition of pigs fed diets with 0% (CAE0) or 15% (CAE15) level of alfalfa meal (n = 4). Principal component analysis evaluated the overall structural changes of the gut microbiota between the CAE0 and CAE15 group (a). Relative abundances of samples evaluated at the phylum (b) and genus (c) levels