ArticlePloS one2023
The genetic impact of heat stress on the egg production of Thai native chickens (Pradu Hang dum).
Article in PloS one, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 30 citations in OpenAlex.
- Genomic selection and association analyses for improving semen traits in Thai native roosters.Poultry science · 2026Article
- Genomic Prediction and Genome-Wide Association Analysis of Egg Fertility and Hatchability Traits in Thai Native Grandparent Stock.Animals : an open access journal from MDPI · 2026Article
- Refined THI Models for Evaluating the Effects of Heat Stress on Egg Production in Thai Native and Black-Boned Chickens.Animals : an open access journal from MDPI · 2026Article
- Integrative genomic analysis and gene expression patterns reveal a cardio-neuroendocrine signaling network for heat adaptation in geographically diverse chickens.Poultry science · 2026Article
- Integrated Stress Physiology and Mitigation Strategies for Heat Stress in Layer Chickens-Review.Animals : an open access journal from MDPI · 2026Review
- Genetic Parameter Estimates and Associations Between Clutch Length and Hen-Day Egg Production Traits in Thai Native Chickens Under Heat Stress.Animals : an open access journal from MDPI · 2026Article
- Energy use and egg production in Rhode Island Red × Naked Neck hens under dry tropical family poultry systems.Tropical animal health and production · 2025Article
- Comparative Analysis of Genetic Parameters for Test-Day Egg Production in Four Thai Native Synthetic Chicken Lines Under Heat Stress.Animals : an open access journal from MDPI · 2025Article
- Genetic Strategies for Enhancing Rooster Fertility in Tropical and Humid Climates: Challenges and Opportunities.Animals : an open access journal from MDPI · 2025Review
- Effects of heat stress on egg performance in laying hens under hot and humid conditions.Veterinary world · 2025Article
- Functional Polymorphisms in the Neuropeptide Y (NPY) Gene Associated with Egg Production in Thai Native, Black-Bone, and Commercial Laying Hens Using SNP Markers.Animals : an open access journal from MDPI · 2025Article
- Unveiling the Genetic Architecture of Semen Traits in Thai Native Roosters: A Comprehensive Analysis Using Random Regression and Spline Function Models.Animals : an open access journal from MDPI · 2024Article
- Feed additives and enrichment materials to reduce chicken stress, maximize productivity, and improve welfare.Veterinary world · 2024Review
- Enhancement of cryopreserved rooster semen and fertility potential after oral administration of Thai ginger (Kaempferia parviflora) extract in Thai native chickens.Animal bioscience · 2024Article
- Genetic Selection Approach for Semen Characteristics in Thai Native Grandparent Roosters (Pradu Hang Dum) Using Random Regression Test-Day Models and Selection Indices.Animals : an open access journal from MDPI · 2024Article
- The effect of Thai ginger (Kaempferia parviflora) extract orally administration on sperm production, semen preservation, and fertility in Thai native chickens under heat stress.Poultry science · 2024Article
- Heat stress effects on the genetics of growth traits in Thai native chickens (Pradu Hang dum).Animal bioscience · 2024Article
- Appropriate Genetic Approaches for Heat Tolerance and Maintaining Good Productivity in Tropical Poultry Production: A Review.Veterinary sciences · 2023Review
- Genetic admixture and diversity in Thai domestic chickens revealed through analysis of Lao Pa Koi fighting cocks.PloS one · 2023Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sustainable poultry production in adverse weather conditions is a widely debated issue, which has led to research into the development of breeds of poultry that are genetically resistant to heat. This study aimed to investigate the effects of heat stress on the genetics of monthly egg production and examine the threshold point of heat stress for preventing thermal stress and its effects on chicken productivity. The data of 5,965 monthly egg production records of 629 Thai native Pradu Hang dum chickens were used for analysis in combination with the temperature-humidity index (THI) calculated by meteorological data near the testing station. The average THI throughout the year was 76.6, and the highest was 82. The THI data were subsequently used to find the threshold point of heat stress. The THI equation used in this study was chosen by its highest correlation (-0.306) between THI values and monthly egg production. At a THI of 74, the lowest -2 logL was found and was considered the threshold point of heat stress. This means that monthly egg production would start decreasing when the THI was 74. Heritability was 0.15±0.03, and genetic and permanent environmental correlations were -0.29 and -0.48, respectively. The threshold point was used to estimate the estimated breeding values (EBVs) of the monthly egg production and heat stress individually, and EBVs were calculated into the selection index. The selection index values when the animal was selected for the replacement herd for all chickens (top 50%, 30%, 20%, and 10%) were 0.14, 0.90, 1.27, 1.53, and 1.91, respectively, and the genetic progress was 0.55, 0.60, 0.68, 0.75, and 0.77, respectively. This shows that the selection index values are lower if there are many selected animals. The recommendation for animal genetic selection is that the top 10% is appropriately because it seems to be most preferred. Therefore, using a selection index for high egg production and heat tolerance in Thai native chickens is possible to achieve genetic assessment in a large population.
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