Polymorphisms associated with resistance to infectious diseases in different breeds of pigs of the Belgorod Region of Russia

Using the PCR-RFLP method, we genotyped pigs for the genes GBP1 (mutation c. [10A>G; 11A>G]), FUT1 (mutation G307A) and MUC4(A243G) associated with resistance to infectious diseases. A total of 188 boars of four breeds (Duroc, Large White, Landrace and Yorkshire) from the Belgorod Region of Russian Federation were studied. The highest frequency of favorable genotype AG for the polymorphism GBP1E2, which is resistant to pig respiratory syndrome, was characterized by the Duroc breed (0.38). The highest frequency of Eischerichia coli F18-resistant AA genotype was observed in the Landrace population (0.19). And in terms of resistance to E. coli with fibrium type F4 (K 88), the highest frequency of favorable genotype GG is characterized by the breed Large White (0,23). In general, it can be noted that genetic resistance in the studied boars is observed predominantly only to one infectious disease