ArticlePoultry science2022
Constant and cyclic chronic heat stress models differentially influence growth performance, carcass traits and meat quality of broilers.
Article in Poultry science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 34 citations in OpenAlex.
- Optimal phytase supplementation levels for broilers differ by thermal condition for phosphorus utilization but not for growth or bone mineralization.Poultry science · 2026Article
- L-cysteine enhances heat-stress adaptation in meat-type chickens through modulation of cysteine-metabolic and nutrient transporter genes.Poultry science · 2026Article
- Effects of dietary starch-to-lipid ratios and amino acid levels on broilers exposed to cyclic heat stress during the finisher period.Poultry science · 2026Article
- Plasma metabolomics reveals distinct responses to acute and chronic heat stress in broilers.Poultry science · 2026Article
- Effects of dietary saponin and polyphenol supplementation in broiler chickens exposed to multiple mild stressors of cyclic elevated ambient temperature, feed withdrawal, and coccidiosis infection.Poultry science · 2026Article
- Growth Performance, Carcass and Meat Quality Traits of Three Rabbit Lines Under Heat Stress Conditions.Animals : an open access journal from MDPI · 2025Article
- The Synergistic Effect of Vitamin C Supplementation and Early Feed Withdrawal on Heat Stress Mitigation in Broiler Chickens.Animals : an open access journal from MDPI · 2025Article
- Evaluation of Alterations in Nutrient Utilization and Intestinal Health in Response to Heat Stress in Pekin Ducks Based on a Pair-Feeding Experimental Design.Animals : an open access journal from MDPI · 2025Article
- Heat stress and the chicken gastrointestinal microbiota: a systematic review.Journal of animal science and biotechnology · 2025Review
- Chronic heat stress facilitates lipoprotein lipase expression and triglyceride biosynthesis in the adipose tissue of growing broiler chickens.Scientific reports · 2025Article
- Chronic cyclic mild heat stress downregulates genes encoding muscle structural components, contributing to reduced breast muscle mass in broiler chickens with minimal impact on meat quality.Journal of animal science · 2025Article
- Comparison of High n-3 PUFA Levels and Cyclic Heat Stress Effects on Carcass Characteristics, Meat Quality, and Oxidative Stability of Breast Meat of Broilers Fed Low- and High-Antioxidant Diets.Animals : an open access journal from MDPI · 2024Article
- Biogenic Selenium Nanoparticles Synthesized Using Alginate Oligosaccharides Attenuate Heat Stress-Induced Impairment of Breast Meat Quality via Regulating Oxidative Stress, Metabolome and Ferroptosis in Broilers.Antioxidants (Basel, Switzerland) · 2023Article
- Influence of different heat stress models on nutrient digestibility and markers of stress, inflammation, lipid, and protein metabolism in broilers.Poultry science · 2023Article
- Glucose Supplementation Improves Performance and Alters Glucose Transporters' Expression inAnimals : an open access journal from MDPI · 2023Article
- Effects of Hot Arid Environments on the Production Performance, Carcass Traits, and Fatty Acids Composition of Breast Meat in Broiler Chickens.Life (Basel, Switzerland) · 2023Article
- Evaluation of Increasing Concentrations of Supplemental Choline Chloride on Modern Broiler Chicken Growth Performance and Carcass Characteristics.Animals : an open access journal from MDPI · 2023Article
- Heat stress inhibits the proliferation and differentiation of myoblasts and is associated with damage to mitochondria.Frontiers in cell and developmental biology · 2023Article
- A review of heat stress in chickens. Part II: Insights into protein and energy utilization and feeding.Frontiers in physiology · 2022Review
- A review of heat stress in chickens. Part I: Insights into physiology and gut health.Frontiers in physiology · 2022Review
Corrections and comments
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This experiment compared the effects of 2 chronic heat stress (HS) models, constant (coHS), and cyclic (cyHS), on broiler performance, carcass characteristics, and meat quality. A total of 720 male chicks from a Cobb 500 line were placed in 12 environmentally controlled chambers divided into 2 pens of 30 birds. Before the experimental HS models were applied, chamber temperatures were gradually decreased from 32°C at placement to 24°C on d 20. From 20 to 41 d, 4 chambers were set to 35°C (coHS), and 4 chambers were set to 35°C for 12 h and 24°C for the next 12 h (cyHS). Four thermoneutral chambers were maintained at 24°C with half of the birds pair-fed to equalize feed intake (FI) with coHS birds (TN-coPF) and half fed ad-libitum (TN-al). From 20 to 41 d, FI and BW gain (BWG) of cyHS, coHS and TN-coPF birds were decreased (P < 0.001), whereas feed conversion ratio (FCR) was increased (P < 0.001) for coHS and TN-coPF birds compared with TN-al birds. The overall BWG and FCR of coHS birds were lower (P < 0.001) than TN-coPF birds. Both HS models reduced (P < 0.001) carcass weight, pectoralis major yield, total breast meat yield, and increased (P < 0.001) wing yield relative to TN-al birds, with each of these measurements more impacted by coHS than by cyHS. Pair-fed birds had lower (P < 0.001) fat pad and a higher total breast meat yield than coHS birds. They also had the lowest (P < 0.001) pectoralis major ultimate pH and yellowness, and these parameters were lower (P < 0.001) for coHS birds than for TN-al birds. Both HS models reduced (P < 0.001) the incidence of woody breast and white striping. Thus, these data indicate that the detrimental effects of HS cannot be entirely explained by reduced FI and that HS per se affects metabolic pathways associated with muscle and lipid accretion in broilers.
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