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Veterinary Sciences
Special Issues
Heat Stress-Induced Metabolic Dysfunction in Domestic Chickens
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Heat Stress-Induced Metabolic Dysfunction in Domestic Chickens

A special issue of Veterinary Sciences (ISSN 2306-7381). This special issue belongs to the section "Nutritional and Metabolic Diseases in Veterinary Medicine".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 2234

Special Issue Editor

Dr. Motoi Kikusato

E-Mail Website
Guest Editor
Animal Nutrition, Life Sciences, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
Interests: mitochondria; intestinal/systemic inflammation; environmental stress; energy metabolism; animal production
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Heat stress (HS) causes significant economic loss in poultry production, as commercial chickens, especially broilers, have less thermotolerance due to their genetic selection for rapid growth. HS is critical for reduced productivity and animal welfare and may become an important issue with the acceleration of global warming. HS induces several metabolic dysfunctions such as respiratory alkalosis, oxidative disturbance, fat deposition, inflammation, hormonal dysregulation, muscle degradation, behavior, etc. This Special Issue focus on heat-stress-induced metabolic dysfunction in all domestic chickens, including broilers, layers, pullets, and breeding hens. This Special Issue welcomes discussions of the systemic mechanisms decreasing the growth performance and meat/egg qualities as well as nutritional management to alleviate HS effects.

Dr. Motoi Kikusato
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. Veterinary Sciences is an international peer-reviewed open access monthly 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 2600 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

  • heat stress
  • metabolic dysfunction
  • domestic chickens

Published Papers (1 paper)

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Research

18 pages, 1262 KiB  
Article
The Immuno-Suppressive Effects of Cyclic, Environmental Heat Stress in Broiler Chickens: Local and Systemic Inflammatory Responses to an Intradermal Injection of Lipopolysaccharide
by Alessandro J. Rocchi, Jossie M. Santamaria, Chrysta N. Beck, Marites A. Sales, Billy M. Hargis, Guillermo Tellez-Isaias and Gisela F. Erf
Vet. Sci. 2024, 11(1), 16; https://doi.org/10.3390/vetsci11010016 - 30 Dec 2023
Viewed by 1329
Abstract
To assess effects of environmental heat stress (HS) on the local and systemic inflammatory responses to lipopolysaccharide (LPS), broilers were reared under thermoneutral (TN) or cyclic HS conditions. Thermoneutral temperatures followed commercial production settings, with HS broilers exposed to 35 °C for 14 [...] Read more.
To assess effects of environmental heat stress (HS) on the local and systemic inflammatory responses to lipopolysaccharide (LPS), broilers were reared under thermoneutral (TN) or cyclic HS conditions. Thermoneutral temperatures followed commercial production settings, with HS broilers exposed to 35 °C for 14 h/day from 4 days onward. At 37 days, HS- and TN-broilers were assigned to either LPS (100 μg/mL) or endotoxin-free phosphate-buffered saline (PBS; vehicle) treatments, eight each to HS- and TN-LPS, four each to HS- and TN-PBS. Treatments were administered by intradermal injection of growing feather (GF) pulps; 10 μL/GF; 12 GF/broiler. Blood and GF were collected before and at 6 and 24 h post-injection to assess leukocyte population changes in GF-pulps and blood, reactive oxygen species (ROS) generation and cytokine expression in GF-pulps, and plasma concentrations of alpha-1 acid glycoprotein (AGP-1). HS-LPS broilers had lower (p ≤ 0.05) infiltration of heterophils and macrophages, ROS generation, and inflammatory cytokine expression in GF-pulps, and lacked the increases in heterophil, monocyte, and plasma AGP-1 concentrations observed in TN-LPS broilers. HS-broilers had similar or greater drops in blood lymphocytes 6 h post-LPS or -PBS injection, respectively, and lower baseline levels (p ≤ 0.05) of circulating T- and B-lymphocytes than TN-broilers. Results indicated that cyclic HS reduced the local and systemic acute inflammatory responses to LPS in broilers, likely impairing their innate defense against microbial infection. Full article
(This article belongs to the Special Issue Heat Stress-Induced Metabolic Dysfunction in Domestic Chickens)
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