The use of chitosan in the composition of feed “BeeHit” for honey bees Marina Frolova, Alexey Albulov, Elana Kovaleva, Anatoly Eliseev, Andrey Gryn, Valery Varlamov, Irina Matveeva, Vladimir Eremets and Yuri Frolov E3S Web of Conf., 462 (2023) 01015 Published online: 12 December 2023 DOI: 10.1051/e3sconf/202346201015