The invention relates to a method for preparing quinsadu premixed agent which can
resist illness and accelerate the growth of animal. The inventive premixed agent comprises 5 deals of quinsadu and 95 deals of carrier, wherein, the carrier can be one or the combination of
zeolite powder, talcum
powder,
calcium carbonate powder, degreased rice
bran powder, corn powder or amidon. The inventive premixed agent can be used in the
forage additive of pig, chicken, duck, fish, calf and lamb, while the relative contents are 25-100mg, 25-200mg, 25-100mg, 25-200mg, 25-150mg, and 25-100mg. The invention can accelerate the growth, reduce the
forage cost and improve the animal quality, while it can control the infection of
digestive canal.