6WEINBERGER S B,KNAPP S,MANDE A J.Failure of tryptophan load in-duced increases in brain serotonin to alter food intake in the rat[J].LifeScience,1978,22(18):1595-1602.
7MOZHDEH EMADI,FATEMEH JAHANSHIRI,KAMRAN KAVEH,etal.Tryptophan stimulates immune response in broiler chickens challengedwith infectious bursal disease vaccine[J].Journal of Animal and Veteri-nary Advances,2010,9(3):610-616.
8BURGOON K G,KNABE D A,GREGG E J.Digestible tryptophan re-quirements of starting,growing,and finishing pigs[J].Journal of AnimalScience,1992,70:2493-2500.
9PLUSKE J K,MULLAN B P.Determining the optimal tryptophan:lysineratio in diets for weanner pigs[C]//Trial Report frmn Murdoch Universi-ty.Australia,2000.
10EDER K,PEGANOVA S,KLUGE H.Studies on the tryptophan require-ment of piglets[J].Archives of Animal Nutrition,200l,55(4):281-297.