TY CONF TI CONJUGATE VARIABILITY OF ECONOMICALLY USEFUL SIGNS OF CATTLE KW productivity KW correlation KW cow KW Holstein breed KW evaluation KW breeding JO SCIENTIFIC SUPPORT FOR LIVESTOCK BREEDING IN SIBERIA AU Chalova, N.A. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS