Abstract
The objective of this study was to identify genetic polymorphisms of the CACNA2D1 gene and to analyze associations between SNPs and carcass and meat quality traits in cattle. Through PCR-RFLP and DNA sequencing methods, a new allelic variant corresponding to the A → G mutation (aspartic to glycine amino acid replacement) of the bovine CACNA2D1 gene was detected. Two alleles and three genotypes (AA, AG, and GG) were defined. Genetic character indicated that the A526745G locus showed moderate polymorphism and was in Hardy–Weinberg equilibrium. Gene-specific SNP marker association analysis showed that the A526745G mutant was significantly associated with carcass weight, dressing percentage, meat percentage, and backfat thickness. The results add new evidence that CACNA2D1 is an important candidate gene for the selection of carcass and meat quality traits in the cattle industry.
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This research was financially supported by the earmarked fund for Modern Agro-industry Technology Research System (No. nycytx-38), the New Variety of Transgenic Organism Great Breeding Program (No. 2008ZX08007-002 and No. 2009ZX08009-157B), the Eleventh “Five-Year” National Science and Technology Support Project (No. 2006BAD04A16 and No. 2007BAD56B04), the National 863 Program of China (No. 2008AA10Z146), and the Public-welfare Profession Research Program (No. nyhyzx07-035-07).
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The first two authors have contributed equally to this work.
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Hou, GY., Yuan, ZR., Gao, X. et al. Genetic Polymorphisms of the CACNA2D1 Gene and Their Association with Carcass and Meat Quality Traits in Cattle. Biochem Genet 48, 751–759 (2010). https://doi.org/10.1007/s10528-010-9357-9
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DOI: https://doi.org/10.1007/s10528-010-9357-9