TY CONF TI METHODOLOGICAL ASPECTS OF EVALUATING THE EFFECTIVENESS OF THE USE OF BULLS-PRODUCERS OF THE RED-MOTTLED HOLSTEIN BREED KW red steppe breed KW red-mottled Holstein breed KW compatibility KW bull evaluation KW bloodline KW genetic potential JO SCIENTIFIC SUPPORT FOR LIVESTOCK BREEDING IN SIBERIA AU Gukezhev, V.M. AU Zhashuev, Z.H. AU Batyrova, O.A. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS