6BAKER D H.Ideal amino acid profiles for swine and poultry and their applications in feed formulation[J].Biokyowa Technical Review,1997,9:1-24.
7MACK S, BERCOVICI D, DE GROOTE G, et al.Ide- al amino acid profile and dietary lysine specification for broiler chickens of 20 to 40 days of age[J] .British Poultry Science, 1999,40 ( 2 ) : 257-265.
8JIANG Q, WALDROUP P W, FRITTS C A. Impro- ving the utilization of diets low in crude protein for broiler chicken 1. Evaluation of special amino acid supplementation to diets low in crude protein [ J ]. In- temational Journal of Poultry Science, 2005,4 ( 3 ) : 115-122.
9KIDD M T,KERR B J.Threonine and broiler nutrition//Proccedings of Arkansas nutrition conference,Fayetteville:[s.n.],1996:203-228.
10DEAN D W, BIDNER T D, SOUTHERN L L. Gly- cine supplementation to low protein, amino acid-sup- plemented diets supports optimal performance of broil- er chicks [ J ] .Poultry Science, 2006,85 ( 2 ) : 288-296.
