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      Factors Affecting Intestinal Health in Poultry

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          Abstract

          The gastrointestinal (GI) tract has the most extensive exposed surface in the body and is constantly exposed to a wide variety of potentially harmful substances. The GI tract acts as a selective barrier between the tissues of the bird and its luminal environment. This barrier is composed of physical, chemical, immunological, and microbiological components. A wide range of factors associated with diet and infectious disease agents can negatively affect the delicate balance among the components of the chicken gut and, as a result, affect health status and production performance of birds in commercial poultry operations. Phasing out of antibiotic growth promoters from poultry diets in Europe and recent moves toward reduction or removal of these compounds in other parts of the world including North America will likely change the microbial profile of the GI tract environment in commercial poultry. This paper reviews the GI tract from developmental, immunological, and microbial standpoints and then discusses factors that can affect health status of this system. Necrotic enteritis and coccidiosis and their interactions, and possible consequences of antibiotic growth promoter removal from poultry diets with respect to these diseases, are discussed in more detail.

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          Author and article information

          Journal
          Poult Sci
          Poult. Sci
          poultrysci
          ps
          Poultry Science
          Oxford University Press (Oxford, UK )
          0032-5791
          1525-3171
          October 2008
          October 2008
          : 87
          : 10
          : 2052-2063
          Affiliations
          Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
          Author notes
          [1 ]Corresponding author: doug.korver@ 123456ualberta.ca
          Article
          10.3382/ps.2008-00091
          7107194
          18809868
          © 2008 Poultry Science Association, Inc.

          This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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          Categories
          Metabolism and Nutrition

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