The probiotic feed additive comprising Bifidobacterium group Bifidobacterium bifidum in a form of "dry Bifidumbacterin lyophilisate" and characterized in that it further comprises Lactobacillus Lb. Acidophilus supplements Biobakton in the form of dry wt.%: "Bifidumbacterin dry lyophilisate" 0.8 BAA Biobakton dry 0.2! and entered in the basal feed in an amount of 1-5%.
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