Gut Permeability in Monogastric and Polygastric Animals

A special issue of Animals (ISSN 2076-2615).

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 1974

Special Issue Editor


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Guest Editor
School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, SA 5371, Australia
Interests: gut immunity and intestinal microbial communites and their interactive involvement in gut health

Special Issue Information

Dear Colleagues, 

“The gut of any animal relies on the ability to prevent luminal pathogens from traversing the mucosal barrier and yet simultaneously maintaining efficient digestion and absorption of nutrients. In order to achieve this, requires precise coordination between the different components of this “first-line defence” barrier. Several factors that contribute to mucosal barrier integrity are (1) secreted antimicrobial proteins and peptides, such as defensins and lyzozyme (2) epithelial tight junctions, critical for maintenance of gut permeability (3) IgA secretion through multiple follicular and extrafollicular pathways and (4) the overlying mucus layer, formed through the packaging and secretion of polymeric mucin glycoproteins by goblet cells. These aspects of the intestinal environment are intricately linked to one another, and unfavourable shifts can lead to poor performance. The early establishment of a healthy microbiota and intestinal environment is critical to the long-term health status of animals.

In this special issue of Animals, we focus on gut permeability and factors that can impact intestinal barrier integrity. We also highlight current research in developing novel strategies to improve gut integrity and prevention of potential enteric disorders in both mono and poly-gastric species”.

Dr. Rebecca Forder
Guest Editor

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Published Papers (1 paper)

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Research

14 pages, 925 KiB  
Article
Short- and Long-Term Exposure to Heat Stress Differently Affect Performance, Blood Parameters, and Integrity of Intestinal Epithelia of Growing Pigs
by Nydia Vásquez, Miguel Cervantes, Hugo Bernal-Barragán, Luis Edgar Rodríguez-Tovar and Adriana Morales
Animals 2022, 12(19), 2529; https://doi.org/10.3390/ani12192529 - 22 Sep 2022
Cited by 5 | Viewed by 1522
Abstract
The effect of short- and long-term exposure to heat stress (HS) was analyzed on blood components, performance, and intestinal epithelium integrity of pigs. Eighteen pigs (36.0 ± 3.5 kg BW) were assigned to three groups: thermo-neutral (TN); 2 d exposure to HS (2dHS); [...] Read more.
The effect of short- and long-term exposure to heat stress (HS) was analyzed on blood components, performance, and intestinal epithelium integrity of pigs. Eighteen pigs (36.0 ± 3.5 kg BW) were assigned to three groups: thermo-neutral (TN); 2 d exposure to HS (2dHS); and 7 d exposure to HS (7dHS). Blood chemistry and hemogram analyses were performed; small intestine samples were analyzed for mRNA expression and histology. Compared to TN, 2dHS and 7dHS pigs reduced weight gain and feed intake; weight gain was higher in 7dHS than in 2dHS pigs (p < 0.05). White blood cells, platelet, and hematocrit were affected in 2dHS and 7dHS compared to TN pigs (p < 0.05). Short- and long-term exposure to HS affected blood concentration of triglycerides, urea, total protein, and albumin (p ≤ 0.05). Villi-height and crypt-depth decreased in HS pigs (p < 0.01). Mucin-producing and apoptotic cell number increased in 7dHS compared to TN pigs (p < 0.05). Expression of tight-junction-proteins decreased in 2dHS pigs compared to TN and 7dHS pigs (p < 0.05). Short-term exposure of pigs to HS dramatically affects performance, blood components, and integrity of the small intestine epithelia; nevertheless, pigs show signs of recovery at 7 d of HS exposure. Full article
(This article belongs to the Special Issue Gut Permeability in Monogastric and Polygastric Animals)
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