ArticleBMC genomics2023
Elucidation of the genetic determination of clutch traits in Chinese local chickens of the Laiwu Black breed.
Article in BMC genomics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.
- Genetic Architecture of Egg Production Traits in Chickens: A Systematic Review.International journal of molecular sciences · 2026Pooled it
- Integrated transcriptomic, proteomic, and metabolomic analyses reveal molecular mechanisms underlying clutch length differences in goose ovaries.Poultry science · 2026Article
- Gut-Derived Lipid Mediators Orchestrate Ovarian Metabolic Homeostasis and Clutch Persistence in Aging Laying Hens via the PLA2G6-ALOX15B-AGPAT3 Axis.Biomolecules · 2026Article
- Deciphering the functions of NELL2 in tumorigenesis and beyond.Frontiers in immunology · 2026Review
- Advances in Genomics and Postgenomics in Poultry Science: Current Achievements and Future Directions.International journal of molecular sciences · 2025Review
- Genome-wide analyses reveal intricate genetic mechanisms underlying egg production efficiency in chickens.Journal of animal science and biotechnology · 2025Article
- Genome-Wide Association Studies and Candidate Genes for Egg Production Traits in Layers from an FGenes · 2025Article
- Integrating genomics and transcriptomics reveals candidate genes affecting loin muscle area in Huaxi cattle.PloS one · 2025Article
- Genome-wide association studies of egg production traits by whole genome sequencing of Laiwu Black chicken.Poultry science · 2024Article
Corrections and comments
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Authors and funding
12 authors at 4 institutions in 1 country.
Funding
Abstract
backgroundEgg laying rate (LR) is associated with a clutch, which is defined as consecutive days of oviposition. The clutch trait can be used as a selection indicator to improve egg production in poultry breeding. However, little is known about the genetic basis of clutch traits. In this study, our aim was to estimate genetic parameters and identify quantitative trait single nucleotide polymorphisms for clutch traits in 399 purebred Laiwu Black chickens (a native Chinese breed) using a genome-wide association study (GWAS).
methodsIn this work, after estimating the genetic parameters of age at first egg, body weight at first egg, LR, longest clutch until 52 week of age, first week when the longest clutch starts, last week when the longest clutch ends, number of clutches, and longest number of days without egg-laying until 52 week of age, we identified single nucleotide polymorphisms (SNPs) and potential candidate genes associated with clutch traits in Laiwu Black chickens. The restricted maximum likelihood method was used to estimate genetic parameters of clutch pattern in 399 Laiwu Black hens, using the GCTA software.
resultsThe results showed that SNP-based heritability estimates of clutch traits ranged from 0.06 to 0.59. Genotyping data were obtained from whole genome re-sequencing data. After quality control, a total of 10,810,544 SNPs remained to be analyzed. The GWAS revealed that 421 significant SNPs responsible for clutch traits were scattered on chicken chromosomes 1-14, 17-19, 21-25, 28 and Z. Among the annotated genes, NELL2, SMYD9, SPTLC2, SMYD3 and PLCL1 were the most promising candidates for clutch traits in Laiwu Black chickens.
conclusionThe findings of this research provide critical insight into the genetic basis of clutch traits. These results contribute to the identification of candidate genes and variants. Genes and SNPs potentially provide new avenues for further research and would help to establish a framework for new methods of genomic prediction, and increase the accuracy of estimated genetic merit for egg production and clutch traits.
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