Efficiency of industrial crossing of meat, dairy and combined cattle Ivan F. Gorlov, Aizhan A. Kaidulina, Vladimir S. Grishin, Natalia A. Tkachenkova, Julia D. Grebennikova, Egor V. Chernikov and Elena Yu. Lazareva E3S Web of Conf., 390 (2023) 02046 Published online: 01 June 2023 DOI: 10.1051/e3sconf/202339002046