The purpose of this research was to develop extraction processes and obtain biologically active preparations based on the sediments of brewer’s yeast for application in the livestock sector. Following the fractional extraction, 2 ecological preparations with valuable biochemical composition were obtained. The amino acid-protein preparation LB-AAP is characterized by a high content of proteins rich in essential amino acids and the mannoprotein preparation-LB-MP which contains balanced amounts of protein, carbohydrates and has a high activity of antioxidant enzymes. It was found that supplementing the basic fodder of the sows with the mannoprotein preparation contributes to the regulation of the reproductive function and the efficient preservation of the valuable pig genofond. The extraction processes and the biochemical composition of the preparations highlight the high biological activity and the enormous potential for use in animal husbandry.