G316A growth hormone polymorphism in pigs of various breeds of the Belgorod Region of Russia


Using the RFLP method, pigs were genotyped for the growth hormone gene (mutation G316A). The study involved 187 boars of four breeds (Duroc, Large White, Landrace and Yorkshire) from the Belgorod region of Russia. The AG genotype frequency for most breeds has the highest values equal to 0.426, 0.489, 0.413, and 0.468, respectively. In the Duroc, Large White and Landrace breeds, the G allele (0.383, 0.479, and 0.467, respectively) and the GG genotype (0.170, 0.234, and 0.261, respectively) have the lowest frequency. At the same time, in Yorkshires, allele A (0.298) and genotype AA (0.064) are characterized by the lowest frequency. We believe that a similar picture can be associated with the peculiarities of selection in various breeds. According to the χ2 test, all studied breeds are in a state of Hardy-Weinberg genetic equilibrium.


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