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Role of the Gut Microbiota in Health and Disease

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Probiotics and Prebiotics in Animal Health and Food Safety

Abstract

Commonly, the ‘gut’ refers to the digestive (alimentary) canal between the pylorus and the anus. Other terms such as the ‘stomach’ and ‘intestinal tract’ are also frequently used in a more general sense. When referring to different kinds of animals, a more specific definition seems necessary. A clear distinction needs to be drawn between vertebrates and non-vertebrates, also with reference to the relative complexity and size of the alimentary tract. For vertebrates, the alimentary canal is generally being referred to as the gastrointestinal tract (GIT), implying a clear distinction between the stomach (with a low pH and generally a low microbial population) and both the small and large intestines (with an increasing pH and microbial numbers). The GI tract harbours the highest numbers of immune cells in our body. These sites are colonised by large numbers of autochthonous commensal microbiota, a healthy population that protects their ecological niche by different mechanisms such as reinforcing barrier immunity (Belkan and Hand 2014).

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Correspondence to Wilhelm Holzapfel .

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Park, H., Yeo, S., Arellano, K., Kim, H.R., Holzapfel, W. (2018). Role of the Gut Microbiota in Health and Disease. In: Di Gioia, D., Biavati, B. (eds) Probiotics and Prebiotics in Animal Health and Food Safety. Springer, Cham. https://doi.org/10.1007/978-3-319-71950-4_2

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  • DOI: https://doi.org/10.1007/978-3-319-71950-4_2

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-71948-1

  • Online ISBN: 978-3-319-71950-4

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