%0 Journal Article %T HEIFERS OF DIFFERENT PRODUCTIVE DIRECTIONS BLOOD MORPHO-BIOCHEMICAL PROFILE IN THE PRE-CALVING PERIOD %A Maikova, N.N. %A Scherbinina, S.A. %A Ostyakova, M.E. %A Irkhina, V.K. %K heifers, metabolism, blood, Holstein breed, Hereford breed %J Bulletin of KSAU %D 2022 %N 0 %P 6 %I Krasnoyarsk State Agrarian University