For the first time, a study of potentially significant polymorphisms of the LIF (rs322167972), NCOA1 (rs335362002, rs697739229) and BF (rs339261793) genes was carried out on a sample of Landrace and Yorkshire sows of Belarusian selection. Primers were designed to identify the polymorphisms under study. Using proven methods, a sample of pigs (n = 147) was genotyped, and the ...