TY JOUR TI EFFECT OF AMINO ACID NUTRITION LEVEL IN PREGNANT DRY COWS ON CALF VIABILITY KW pregnant cow KW fetus KW colostrum KW calves KW calf immunity KW amino acids KW methionine KW lysine KW growth KW calf development KW resistance JO Bulletin of KSAU AU Efendiev, B.S. AU Ulimbashev, M.B. AU Karashaev, M.F. AU Berbekova, I.M. PY 2025 IS 0 PB Krasnoyarsk State Agrarian University