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Animals
Special Issues
Heat Stress and Amino Acids in Poultry Production
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Heat Stress and Amino Acids in Poultry Production

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

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 3784

Special Issue Editor

Prof. Dr. Motoi Kikusato

E-Mail Website
Guest Editor
Department of Animal Biology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8577, Japan
Interests: mitochondria; energy metabolism; free radical generation; ATP synthesis; environmental stress; proteolysis; feed additives; polyphenols
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Global warming causes “heat stress” to domestic animals such as dairy and beef cattle, pigs, and poultry, resulting in economic losses. In poultry production, several feeding strategies using electrolytes, vitamins, minerals, and phytochemicals have been conducted to alleviate the negative effects of heat stress. Amino acid (AA) fortification in the diet is the most useful mean with which to improve the performance under heat-stressed conditions. The effects of AA supplementation into normal or low crude protein diets, and the supplemented AA types such as the limiting AA, essential AA or its combination have been extensively evaluated to seek the effective feed formulation for suppressing the heat stress effects. In this Special Issue, the updated topic regarding “Heat stress and amino acid in poultry production” is raised, which includes novel AA supplementation effects, AA dynamics and absorption machinery, as well as AA metabolomics, regardless of AA types.

Prof. 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. 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

  • heat stress
  • feeding strategies
  • amino acid
  • amino acid dynamics and absorption machinery
  • amino acid metabolomics

Published Papers (1 paper)

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Research

12 pages, 910 KiB  
Article
In Ovo Injection of GABA Can Help Body Weight Gain at Hatch, Increase Chick Weight to Egg Weight Ratio, and Improve Broiler Heat Resistance
by Chris-Major Ncho, Akshat Goel, Chae-Mi Jeong, Mohamed Youssouf and Yang-Ho Choi
Animals 2021, 11(5), 1364; https://doi.org/10.3390/ani11051364 - 11 May 2021
Cited by 18 | Viewed by 3004
Abstract
The aim of this study was to explore the outcomes of an in ovo GABA injection in broilers challenged with HS. In Experiment 1, 210 Arbor Acres eggs were allocated to five treatments: no-injection, and in ovo injection of 0.6 mL of 0%, [...] Read more.
The aim of this study was to explore the outcomes of an in ovo GABA injection in broilers challenged with HS. In Experiment 1, 210 Arbor Acres eggs were allocated to five treatments: no-injection, and in ovo injection of 0.6 mL of 0%, 5%, 10%, or 20% of GABA. Hatchling weight and CWEWR were significantly increased in the 5% GABA group. In ovo, injection of 10% GABA solution caused a significant decrease in plasma cholesterol and increased plasma total antioxidant capacity of hatchlings. Experiment 2 was conducted with 126 fertile Arbor Acres eggs distributed into one of two groups. At 17.5 days of incubation, one received no injection, and the other was fed 0.6 mL of 10% GABA. On day 10, one subgroup (4 replicates * 3 birds) from each treatment was submitted to HS (38 ± 1 °C for 3 h) while the other was kept at a thermoneutral temperature (29 ± 1 °C). An in ovo injection of GABA significantly increased total antioxidant capacity, but reduced malondialdehyde levels, hepatic mRNA levels of HSP70, FAS, and L-FABP with HS. In conclusion, an in ovo GABA injection improves CWEWR and antioxidant status at hatch, and enhances antioxidant status while downregulating the expression of HSP70 and fatty acid metabolism-related genes in young chicks under HS. Full article
(This article belongs to the Special Issue Heat Stress and Amino Acids in Poultry Production)
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