TY JOUR TI Blood parameters and productivity of chickens when using phytobiotic preparations in the diet KW morphological and biochemical parameters of chicken blood KW safety KW productivity KW laying hens KW phytobiotics JO Agrarian Bulletin of the AU Shackih, E.V. AU Latypova, E.N. PY 2023 IS 237 PB Ural State Agrarian University