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Microbiota in the Poultry Gastrointestinal Tract: Implications for Health, Nutrition...
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Microbiota in the Poultry Gastrointestinal Tract: Implications for Health, Nutrition and Productivity

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Poultry".

Deadline for manuscript submissions: 20 November 2024 | Viewed by 613

Special Issue Editor

Dr. Yadav Sharma Bajagai

E-Mail Website
Guest Editor
School of Health, Medical and Applied Sciences, Institute for Future Farming Systems, CQUniversity Australia, Norman Gardens, Australia
Interests: microbiome; gut health; genomics

Special Issue Information

Dear Colleagues,

Recent advancements in nucleotide sequencing technologies, accompanied by a significant decrease in costs, have led to an upsurge in microbiome-related research over the past decade. This has enhanced our understanding of the role of intestinal microbiota in health, nutrition and productivity in poultry. The intestinal microbiota is instrumental in a variety of functions, including nutrient digestion, development of the immune system, synthesis of essential nutrients, metabolism regulation, modulation of the gut–brain axis, detoxification, nutrient absorption, enhancement of gut barrier function and mucosal development. These multifaceted roles of the intestinal microbiota are critical in influencing the health, feed efficiency and growth rates of poultry, which, in turn, have direct implications on birds' welfare and the economic yield from the poultry industry. Consequently, maintaining a healthy intestinal microbiota is vital in poultry production. This emerging knowledge has led to numerous studies focusing on modifying the intestinal microbiome, employing cutting-edge next-generation technologies to investigate the intricate interactions between the intestinal microbiome and hosts.

Considering the substantial progress in microbiome research and its profound impact on poultry health and production, we are excited to announce a Special Issue of Animals dedicated to this dynamic field. We cordially invite researchers, scholars and experts to contribute original research papers, reviews and insightful perspectives.

This Special Issue aims to showcase the latest findings and innovations in the role of gastrointestinal microbiota in the health, nutrition and productivity of poultry.

Dr. Yadav Sharma Bajagai
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Animals is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microbiota
  • microbiome
  • gut health
  • poultry
  • host–microbiome interaction

Published Papers (1 paper)

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Research

19 pages, 4621 KiB  
Article
Dynamic Changes in Intestinal Gene Expression and Microbiota across Chicken Egg-Laying Stages
by Kai Shi, Xiangping Liu, Ying Duan, Xusheng Jiang, Ni Li, Yuesong Du, Dongfeng Li and Chungang Feng
Animals 2024, 14(11), 1529; https://doi.org/10.3390/ani14111529 - 22 May 2024
Viewed by 366
Abstract
Eggs are a vital dietary component for humans, and it is beneficial to increase egg production to support poultry farming. Initially, the egg production rate rises rapidly with young hens until it reaches its peak, and then it declines gradually. By extending the [...] Read more.
Eggs are a vital dietary component for humans, and it is beneficial to increase egg production to support poultry farming. Initially, the egg production rate rises rapidly with young hens until it reaches its peak, and then it declines gradually. By extending the duration of peak egg production, the hens’ performance can be enhanced significantly. Previous studies found dynamic changes in gut microbiota during egg-laying, and several species of microbiota isolated from the chicken gut improved egg-laying performance. However, the interaction between microbes and host gene expression is still unclear. This study provides a more comprehensive understanding of chicken egg-laying by examining dynamic alterations in the microbiota of the entire intestinal tract (i.e., duodenum, jejunum, and ileum) and gene expression. The microbial community in the intestine underwent significant changes during different egg-laying periods (i.e., pre-, peak-, and late-laying periods). Metagenomic functional analysis showed that the relative abundance of biosynthesis of amino acids, secondary metabolites, and cofactors decreased significantly in the duodenum, jejunum, and ileum of aging hens. The relative levels of aldosterone, GnRH, insulin, growth hormone, and other hormone-related pathways increased dramatically in the intestinal microbiota during egg-laying, but only in the microbiota located in the duodenum and ileum. Transcriptome analysis suggested that genes associated with various transport processes were upregulated consistently in the small intestine during egg-laying; genes involved in the development of intestinal structure were down-regulated; and genes involved in response to DNA damage and stress were consistent with changes in laying rate. The abundance of Lactobacillus was related to the expression of ANGPTRL1, ANGPTRL2, ANGPT1L, and NOXO1 in the duodenum; Muricomes was correlated significantly with NFKBIZ, LYG2, and IRG1L expression in the jejunum; and Campylobacter was correlated positively with the expression of KMT2A and USF3 in the ileum. These results indicated that the intestinal microbiota and host gene expression may influence egg production jointly. Full article
(This article belongs to the Special Issue Microbiota in the Poultry Gastrointestinal Tract: Implications for Health, Nutrition and Productivity)
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