AI Article Synopsis
- Egg production is crucial for laying hens, and a study analyzed 266 LingKun Chickens to find genetic markers linked to traits like egg weight and shell strength.
- Thirty-seven single nucleotide polymorphisms (SNPs) were discovered that correspond to key traits, and these SNPs are near thirteen candidate genes that influence egg production and quality.
- Notably, SLIT3, a gene connected to bone formation, emerged as a potential candidate for influencing eggshell strength, indicating the importance of these genetic findings for enhancing breeding strategies in poultry.
Article Abstract
Egg production is the most important trait of laying hens. To identify molecular markers and candidate genes associated with egg production and quality, such as body weight at first oviposition (BWF), the number of eggs produced in 500 days (EN500), egg weight (EW), egg shell thickness (EST), egg shell strength (ESS), and Haugh unit (HU), a genome-wide analysis was performed in 266 LingKun Chickens. The results showed that thirty-seven single nucleotide polymorphisms (SNPs) were associated with all traits ( < 9.47 × 10, Bonferroni correction). These SNPs were located in close proximity to or within the sequence of the thirteen candidate genes, such as Galanin And GMAP Prepropeptide (GAL), Centromere Protein (CENPF), Glypican 2 (GPC2), Phosphatidylethanolamine N-Methyltransferase (PEMT), Transcription Factor AP-2 Delta (TFAP2D), and Carboxypeptidase Q (CPQ) gene related to egg-laying and Solute Carrier Family 5 Member 7 (SLC5A7), Neurocalcin Delta (NCALD), Proteasome 20S Subunit Beta 2 (PSMB2), Slit Guidance Ligand 3 (SLIT3), and Tubulin Tyrosine Ligase Like 7 (TTLL7) genes related to egg quality. Interestingly, one of the genes involved in bone formation (SLIT3) was identified as a candidate gene for ESS. Our candidate genes and SNPs associated with egg-laying traits were significant for molecular breeding of egg-laying traits and egg quality in LingKun chickens.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9251537 | PMC |
| http://dx.doi.org/10.3389/fvets.2022.877739 | DOI Listing |
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