Identification of Candidate Genes Associated with Meat Production of Aberdeen Angus Cattle
Vladimir Kolpakov1, Elena Bukareva1, Dianna Kosyan1
1Federal Research Centre of Biological Systems and Agro-Technologies, Russian Academy of Sciences, 460000 Orenburg, Russia.
Abstract:
The use of GWASs in agriculture allows associations between SNPs and quantitative or qualitative traits in cattle to be estimated. This study investigated the relationships among a number of economically useful carcass traits (slaughter weight, meat yield, and meat marbling) with a group of SNPs that can act as DNA markers. Blood samples from Aberdeen Angus bulls (n = 260) were used as material for SNP genotyping. Genetic architecture for the kill yield trait showed the presence of 31 SNPs. Three SNPs were found to be the most reliable: BTB-00197584 (p = 7.20 × 10-5), Hapmap46735-BTA-86653 (p = 5.05 × 10-5), and BTB-00676077 (p = 7.02 × 10-5). There were 10 SNPs associated with meat yield. For meat yield, 7 SNPs were identified, four of them exceeding the threshold of established validity: ARS-BFGL-NGS-30557 (p = 1.28 × 10-12), ARS-BFGL-NGS-68920, ARS-BFGL-NGS-30466 on chromosome 8 (p = 1.20 × 10-6 and 3.03 × 10-6, respectively) and ARS-BFGL-NGS-40640 (p = 7.10 × 10-6). For marbling, 11 SNPs were identified on 6 of 29 chromosomes. These SNPs can act as potential markers for productivity assessment in cattle.
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