Abstract
The back fat thickness is an important characteristic that affects the quality of meat. Molecular genetic studies have made it possible to identify a number of genes associated with indicators of back fat thickness, intramuscular fat content, precocity, body length and average daily gain. Genome-wide association studies (GWAS) have shown that TNFα-induced protein 3 (TNFAIP3) and CDP-diacylglycerol synthase 1 (CDS1) genes are associated with back fat thickness. We conducted the study of two polymorphisms TNFAIP3 (rs81351586, A/G) and CDS1 (rs331818788, C/A). The experimental sample included 195 Large White sows and 161 Landrace sows. Determination of polymorphisms was carried out through RT-PCR. The frequencies of occurrence of alleles and genotypes were established. The study revealed a significant difference between the backfat thickness at the withers and the backfat thickness above the 6–7 thoracic vertebrae for the CDS1 gene in Landrace pigs. There were no significant differences in the TNFAIP3 gene between individuals with different genotypes.
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