Abstract
The authors conducted studies on the effect of the estrogen receptor (ESR), prolactin receptor (PRLR), and ryanodine receptor (RYR-1) genotypes on the breeding value of sows. Using the BLUP method, they evaluated the indicators of the large white, landrace, and Duroc breeds to develop a regional hybridization system in the pig industry of the Belgorod region. The research determined a significant influence of the “desirable” BB and AB genotypes of the ESR gene in large white sows and the “desirable” BB genotype of the RPLR gene in Landrace and Duroc sows on the maternal BLUP index.
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