The invention relates to a method of supplementing farm animal feed with an enzymatic complex including a mixture of proteases, obtained by culturing a Streptomyces fradiae strain, wherein among this mixture of proteases one of them has an isoelectric point of around 7.0 and another has an isoelectric point of around 8.0. The invention also relates to feed compositions for farm animals including the enzymatic complex as well as the manufacturing process enzymatic complex thereof.
