... yellow-brown powder, Have a special smelly, bacillus peptide zinc polypeptide antibiotics, belong to gram-positive bacterium bactericidal effect ... Promote livestock growth, raise feed conversion rate. Bacillus peptide zinc orally, most hardly absorb in 2 days with droppings. ... Bacillus peptide zinc and penicillin, streptomycin, aureomycin and slime vegetable etc ...