TY JOUR TI USING ESTROUS SYNCHRONIZATION PROTOCOLS EFFICACY IN COWS WITH ANOVULATORY OVARIAN CONDITION KW ultrasonographic pattern KW synchronization protocol KW CIDR KW Progestamag KW progesterone KW ovarian hypofunction JO Bulletin of KSAU AU Ashenbrenner, A.I. AU Belyaeva, N.Y. AU Chekunkova, Y.A. AU Haperskiy, Y.A. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University