Amino acid mineral complex having immunopotentiating activity and composition for foods, pharmaceuticals, or feeds comprising same

A method of increasing antibody titer against foot-and-mouth disease or decreasing avian influenza virus titer in an animal in need thereof, comprising administering to the animal in need thereof an effective amount of an amino acid-mineral complex as an active ingredient, wherein the amino acid-mineral complex is a water-soluble zinc aspartate hydrate of Chemical Formula 1 having a molecular formula C4H9NO7Zn:

• wherein the avian influenza is H1N1;
• wherein the amino acid-mineral complex is comprised in a feed additive composition at a concentration between 0.1 wt % to 0.3 wt %;
• or
• the animal in need thereof is administered 20 μg/kg/day of the amino acid-mineral complex.