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Molecular Genotype Identification of Different Chickens: Major Histocompatibility Complex | Abstract

The Open Access Journal of Science and Technology

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Molecular Genotype Identification of Different Chickens: Major Histocompatibility Complex

Author(s): Hongzhi Wang, Teng Ma, Guobin Chang, Fang Wan, Xiangping Liu, Lu Liu, Lu Xu, Jing Chen, and Guohong Chen

Chicken is a main poultry in China. Molecular breeding for disease resistance plays an important role in the control of diseases, especially infectious diseases. Choice of genes for disease resistance is the key technology of molecular breeding. The major histocompatibility complex (MHC) is of great interest to poultry breeding scientists for its extraordinary polymorphism and close relation with traits of resistance against infectious diseases. The MHC-B haplotype plays an important role in the study of disease resistance in chicken. The traditional chicken MHC-B haplotype is commonly defined by serologic reactions of erythrocytes and the majority of studies have been conducted in Leghorn and broiler but study about other chicken breeds is little. In this study, firstly, the microsatellite marker LEI0258 which is located within the MHC was sequenced by using target sequence capture assay in different chicken breeds, and then according to the number of repeated structures and polymorphic sequences in microsatellite, sequence information for the region defined by LEI0258 was obtained for different haplotypes. Afterwards, we identified the relation between MHC-B haplotypes and disease resistance. Collectively, these observed results provided the reference data for disease-resistant breeding association with blood type and for further study of MHC gene function in poultry.

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