Protein status of holshtinized black and white cattle O.I. Sebezhko, R.V. Mayer, E.I. Tarasenko, V.G. Marenkov and V.V. Garth BIO Web Conf., 36 (2021) 06023 Published online: 01 October 2021 DOI: 10.1051/bioconf/20213606023