Bacterial succession and specialization within the poultry gastrointestinal tract

Thumbnail Image
Date
2021-01-01
Authors
Maki, Joel
Major Professor
Advisor
Torey Looft
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Authors
Research Projects
Organizational Units
Organizational Unit
Veterinary Microbiology and Preventive Medicine
Our faculty promote the understanding of causes of infectious disease in animals and the mechanisms by which diseases develop at the organismal, cellular and molecular levels. Veterinary microbiology also includes research on the interaction of pathogenic and symbiotic microbes with their hosts and the host response to infection.
Journal Issue
Is Version Of
Versions
Series
Abstract

The intestinal microbiota has a profound impact on the health and productivity of poultry species, making the acquisition, composition, and functional contributions of individual community members of vital importance for producers. Determining the source(s) of the initial microbial inoculum from which newly hatched chicks establish their intestinal microbiota and assessing the functionality of individual intestinal microbes can provide producers with potential interventions to achieve the improvements in animal health and performance. Here, we evaluate the impacts of different inocula sources, namely the eggshell- and the environmental-associated microbial communities, on the establishment and successional processes along the intestinal tract of newly hatched chicks. It was found that both the eggshell and environmental microbiota contribute to microbial succession in the poultry intestinal tract. Interestingly, the eggshell seems to play an appreciable role in the development of the small intestine microbiota, specifically the jejunum and ileum, where the microbial community structure of birds exposed exclusively to the eggshell microbiota significantly resembled the structure of conventionally raised birds. Additionally, a novel species of Turicibacter was isolated from chicken eggshells and the swine ileum. Novel Turicibacter isolates were genomically characterized and their physiological responses to chicken bile and individual bile acids were compared. Turicibacter strains were capable of deconjugating bile acids, potentially impacting host nutrient absorption. Future research should focus on the application of well-described microbial consortia to drive beneficial successional processes in the intestinal tract of poultry and the further description of novel bacteria that have the potential to impact host health and productivity.

Comments
Description
Keywords
Citation
Source
Copyright
Sat May 01 00:00:00 UTC 2021