TY JOUR TI Dynamics of the genealogical structure of the dairy cattle population active part in the Omsk region. KW factory line KW dairy farming KW biodiversity KW genealogical structure KW population JO Vestnik of Omsk SAU AU Ivanova, I.P. AU YUrchenko, E.N. PY 2026 IS PB FSBEI HE Omsk SAU