TY JOUR TI THE IDENTIFICATION OF THE BOAR-PRODUCER BEST LINE IN THE LANDRACE BREED KW pigs KW breed KW line KW live weight gain KW economic efficiency JO Bulletin of KSAU AU Ivanova, O.V. AU Yefimova, L.V. AU Azanova, A.V. PY 2015 IS PB Krasnoyarsk State Agrarian University