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Milk fat percentage is an important production trait of dairy cattle and is one of the goals of breeding programs. Over 95% of the milk fat accounts for triacylglycerols. AGPAT6 (1-acylglycerol-3-phosphate O-acyltransferase 6) catalyzes an intermediary step of triglyceride synthesis in the mammary cells. Genome-wide association studies identified SNP rs211250281 (g27: 36520069 G/T) in the  agpat6  gene associated with milk fat content and fat-to-protein ratio in dairy cattle. The article presents data on the development of TaqMan PCR assay for genotyping SNP rs211250281 of the bovine  agpat6  gene. In this method, a primer pair, initiating amplification of 75-bp fragments of the  agpat6  gene, and two allele-specific TaqMan probes are used. Identification of the G and T alleles is based on a comparison of the final fluorescence intensity of FAM and VIC dyes, respectively. The developed TaqMan PCR assay was validated by Sanger sequencing method. The results of both methods fully coincided, that confirmed high accuracy of the developed TaqMan PCR assay. This reliable, simple, rapid, and high-throughput method could be a suitable tool for studying the distribution of the SNP rs211250281 among different cattle breeds and its association with milk fat content.

Development of TaqMan PCR assay for genotyping SNP rs211250281 of the bovine agpat6 gene