Screening of the allele pool of the pig populations of various breeds in the Belgorod and Voronezh regions of Russia by the gene of the estrogen receptor gene ESR1

Abstract

We studied populations of boars of two pig breeds (Large White and Landrace) in the Belgorod and Voronezh regions of Russia to identify mutations in the gene of the estrogen receptor ESR1 (ESR/PvuII). The results showed that the frequency of the positive B allele was 0.279 in the Landrace and 0.824 in the Large White. An assumption is made that the breeding farms of the indicated region carry out the insufficient selection in Landrace pig populations in relation to maintaining high rates of multiple fertility