Cattle stearoyl-coa desaturase gene (SCD1) polymorphic variants monitoring depending on the direction of productivity

The present study is dedicated to genotyping of Holstein heifers whit using PCR-RLFP method and cattle Stearoyl-CoA Desaturase gene allele and genotype diversity monitoring was carried out depending on the productivity direction. 258 Holstein cow-heifers of Integrated Agricultural Production Centre «Stud farm named after Lenin» of Atninsky district of Republic of Tatarstan were genotyped for the study. Blood sample DNA testing showed that the SCD1 gene is polymorphic for the population under the research. In the course of work the following allelic variants and genotypes were identified: С - 0.61 and T - 0.39; CC - 38.4% (99 animals), CT- 45.7% (118 animals), TT - 15.9% (41 animals). The chi-square method testing between the observed and expected genotype distribution indicates genetic equilibrium in the population under study. For all groups of cattle of different directions of productivity, the prevalence of the С allele over the T allele.