TY JOUR TI SELECTION AND TECHNOLOGICAL MODEL FOR THE TSIGAI BREED YOUNG ANIMALS HERD FORMATION WITH IMPROVED PRODUCTIVE QUALITIES INDICATORS KW Tsigai breed KW breeding and technological model KW ewes KW young animals KW live weight KW lambing KW weaning period KW replacement young animals JO Bulletin of KSAU AU Ostapchuk, P.S. AU Usmanova, E.N. AU Zubochenko, D.V. AU Kuevda, T.A. AU Pihtereva, A.V. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University