ArticlePoultry science2019
Effects of acute and chronic heat stress on the performance, egg quality, body temperature, and blood gas parameters of laying hens.
Article in Poultry science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
49 citing papers in PubMed, 133 citations in OpenAlex.
- Dietary Chlorogenic Acid-Rich Green Coffee Bean Extract Improves Laying Performance and Antioxidant Status in Heat-Stressed Laying Hens.Animals : an open access journal from MDPI · 2026Article
- Effects of chronic mild heat stress on reproductive performance, ovarian development, and HPO axis hormone secretion in broiler breeders.Poultry science · 2026Article
- Effect of heat stress and GlyNAC supplementation on jejunal morphology, hepatic inflammation infiltration and distribution of GSH content in chickens.Poultry science · 2026Article
- Dietary β-glucan supplementation mitigates heat stress-induced impairment of performance, egg quality, and intestinal integrity in laying hens.Veterinary world · 2026Article
- Chronic heat stress compromises egg production and quality parameters through changes in blood biochemistry and uterine gene expression in laying hens raised under cage-free environment.Frontiers in physiology · 2026Article
- Egg Production and Biochemical Evaluation of Laying Quails Fed Diets Containing Phytase Overdosage Under Different Thermal Conditions.Animals : an open access journal from MDPI · 2025Article
- Impact of Betaine Supplementation on Growth Performance, Nutrient Digestibility, Egg Quality, Gas Emissions, and Blood Profile in Laying Hens Under Heat Stress Conditions.Animals : an open access journal from MDPI · 2025Article
- Effects of Low-Protein Amino Acid-Balanced Diets andAnimals : an open access journal from MDPI · 2025Article
- Effects of Cool Water Supply on Laying Performance, Egg Quality, Rectal Temperature and Stress Hormones in Heat-Stressed Laying Hens in Open-Type Laying Houses.Animals : an open access journal from MDPI · 2025Article
- Molecular Pathogenesis of Avian Splenic Injury Under Thermal Challenge: Integrated Mitigation Strategies for Poultry Heat Stress.Current issues in molecular biology · 2025Review
- Effect of probiotic supplementation on productive performance and epithelial intestinal integrity of broiler chickens exposed to heat stress.Tropical animal health and production · 2025Article
- Effect of Canthaxanthin on Egg Yolk Quality of Huaixiang Laying Hens at Normal and High Temperature.Foods (Basel, Switzerland) · 2025Article
- Determining how different ventilation shutdown plus methods change the electroencephalography, blood chemistry, corticosterone, and heat shock protein 70 of laying hens.Frontiers in physiology · 2025Article
- Seasonal variation in egg nutrient composition under a pasture-based layer hen system: Implications for sustainable agriculture.PloS one · 2025Article
- Effects of relative humidity on physiology and behavior of laying hens exposed to high ambient temperatures.Tropical animal health and production · 2024Article
- Effects of Low-Pressure Systems on Temperature, Humidity, Egg Production, and Feed Utilization Efficiency in Large-Scale Poultry Houses during Summer.Animals : an open access journal from MDPI · 2024Article
- Oxidative stress in poultry production.Poultry science · 2024Review
- Effects of Heat Stress on the Laying Performance, Egg Quality, and Physiological Response of Laying Hens.Animals : an open access journal from MDPI · 2024Article
- Effect of three different insect larvae on growth performance and antioxidant activity of thigh, breast, and liver tissues of chickens reared under mild heat stress.Tropical animal health and production · 2024Article
- Egg Quality, Yolk Fatty Acid Profiles from Laying Hens Housed in Conventional Cage and Cage-Free Production Systems in the Andean Tropics.Animals : an open access journal from MDPI · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The goal of this experiment was to measure the physiological response of individual laying hens exposed to heat stress (HS). Performance, egg quality, body temperature (BT), and blood chemistry of laying hens were individually recorded before and after various intervals of daily cyclic HS. In total, 407 18-week-old W-36 parent-line laying hens (Hy-Line International, Dallas Center, IA) were housed individually in battery cages. After an acclimation period, baseline data were collected from 22 to 24-wk before the hens were subjected to a daily cyclic HS consisting of 7 h at 35°C returning to 30°C for the remaining 17 h/D from 24 to 28-wk of age. Eggs were collected and individually weighed daily. Feed intake (FI), egg production (EP), egg weights, egg mass, BW, and feed efficiency (FE) (g egg/kg FI) were calculated over 2-wk time periods. Eggs were collected for quality assessment the day before HS began, the 2nd day of HS, and on a weekly basis throughout the 4-wk HS. Blood was collected and BT measured the day before heat HS was initiated, on the first day of HS, and again at 2 and 4-wk of HS. Blood PCO2 and iCa decreased, and blood pH increased within 4 to 6 h of HS (P ≤ 0.01). Shell weights decreased with acute HS, possibly due to the reduction in blood iCa (P ≤ 0.01). After 4-wk of HS the blood pH returned to pre-HS levels but iCa remained decreased (P ≤ 0.01). Shell weights remained low and Haugh units decreased after 2 and 4-wk of HS (P ≤ 0.01). Feed efficiency was increased and FI, EP, and BW decreased by 2-wk of HS and remained low through 4-wk (P ≤ 0.01). The cyclic HS had a significant effect on the performance, egg quality, and blood chemistry over the 4-wk HS.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.