“…In the last two centuries, a common strategy was to maximize pig farming profitability of highly productive commercial breeds (such as Large White, Landrace, and Duroc) with high growth rates, good feed conversion and increased lean meat yield (Wang et al, 2018). As a result, these breeds became popular worldwide, including in the Russian Federation (Traspov et al, 2016c;Traspov et al, 2016a;Traspov et al, 2016b;Čandek Potokar et al, 2019;Čandek Potokar & Nieto, 2019).…”