The use of alfalfa hay extract and enriched with biogenic trace elements in a dose of 100 ml/head in the diet of calves of the dairy growing period, per day and the enzyme GlucolyuxF in an amount of 0.50 kg /1 of compound feed, when used together, increases the cellular non-specific immunity of animals to a greater extent, which increases by 6 months of age.
Alexander Ovchinnikov, Valentina Maltseva, Julia Matrosova, Eugenia Yerenko