... Premix following raw materials .1.Amino Acid :L-Lysine,Glycine,DL-Methionine,DL-Theronine DL-Tryptophan ,etc..2.Vitamin : Vitamin ... A,Vitamin B1,Vitamin B2,Vitamin B6,Vitamin C,Vitamin D3 ,Vitamin K3 3.Folic Acid ... manganese sulfate ,maganesium sulfate,etc5.Appetite promoter :Vanillin,Malic Acid,Lactic acid,Ethyl Acetate ,etc ...6. Antibacterial agent :Tylosin, ...