TY JOUR TI THE TSIGAI BREED IN EURASIAN SHEEP BREEDING KW sheep KW Tsigai breed KW intrabreed type KW Eurasia KW selection KW genetics JO Bulletin of KSAU AU Ostapchuk, P.S. AU Pashteckiy, V.S. AU Kryzhko, A.V. AU Kuevda, T.A. AU Ostapchuk, L.N. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University