How can heat stress affect chicken meat quality? - a review

Poultry Science
Gholamreza ZaboliDong U Ahn

Abstract

Heat stress is one of the most important environmental stressors for the poultry industry in the world. Reduced growth rate, low feed efficiency, impaired immunological responses, changes in intestinal microflora, and deterioration of meat quality are the consequences of acute or chronic heat stress. In terms of meat quality, 3 primary mechanisms have been suggested to explain this phenomenon: 1) rapid drop in pH during and after slaughter due to the glycogen conversion to increase in lactic acid accumulation especially when the muscle temperature is high, a combination of high temperature and low pH that facilitates the denaturation of sarcoplasmic proteins resulting in lower water-holding capacity of muscle; 2) acceleration of panting to dissipate body heat, which increases CO2 exhalation and pH drop in blood, initiates metabolic acidosis in skeletal muscle. Increase in panting is also associated with a high release of corticosteroid hormones; 3) the reactive oxygen species produced by heat stress increases the oxidative stress in the birds, which can damage the structure and functions of the enzymes that regulate sarcoplasmic calcium levels in muscles. Overall, these changes in the muscle cells accentuate energy expenditure ...Continue Reading

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Citations

Jan 17, 2020·Animals : an Open Access Journal From MDPI·Khaled M M SalehMohammad Borhan Al-Zghoul
Oct 8, 2020·International Journal of Biometeorology·G D VandanaShane K Maloney
Dec 17, 2019·Meat Science·Paula A Gonzalez-RivasRobyn D Warner
Jan 2, 2021·Animals : an Open Access Journal From MDPI·Francesco PeriniEmiliano Lasagna
Feb 16, 2021·Environmental Science and Pollution Research International·Yueping ChenYanmin Zhou
May 1, 2021·Animals : an Open Access Journal From MDPI·Mohammed M Qaid, Maged A Al-Garadi
Jul 3, 2021·Animals : an Open Access Journal From MDPI·Alaeldein M AbudabosAbdulrahman S Alharthi
Oct 7, 2021·Tropical Animal Health and Production·Muhammad Adnan AslamӦzay Güleş

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