ArticlePoultry science2025
Identification of new major histocompatibility complex-B haplotypes in chinese broilers.
Article in Poultry science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
MHC in chicken demonstrates a great range of variations. This study was conducted to investigate the major histocompatibility complex-B (MHC-B) variability in three representative broiler breeds with large breeding populations in China namely Arbor Acres (AA), 817 broilers (817), and Jinling Partridge (JL). The three Chinese broilers were analyzed with a subset of 89 SNPs in the MHC-B SNP panel. The genotypes of these SNPs were obtained using multiplex PCR targeted amplicon sequencing. The haplotypes were analyzed through a combination of manual and computational haplotype reconstruction methods using PHASE program. The phylogenetic tree was constructed based on haplotypes using MrBayes program. A total of 67 haplotypes were identified within three broilers populations, among which three haplotypes from the AA and 817 populations shared the standard MHC-B SNP (BSNP) haplotype. No matching haplotypes were detected in the JL population. Phylogenetic analysis based on these SNPs did not reveal clearly defined population clusters. This study reveals a high level of genetic diversity within the MHC-B region, highlighting the importance of this functionally significant genomic region in the three broilers. However, the observed genetic patterns indicate a complex relatedness structure among the three populations. These findings indicate the need for further investigation to better understand the evolutionary dynamics and functional implications of MHC-B variation.
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