1Craig SA. 2004. Betaine in human nutrition. The American Journal of Clinical Nutrition, 80 (3) : 539 - 549.
2Attia YA, Hassan R.A, Qota MA.2008. Productive performance and physiological traits of slow - growing chicks as affected by heat stress, ascorbie acid and different levels of betaine. World's Poultry Science Journal, 64 ( supplement 2 ) : 346.
3Jahanian R, Rahmani HR. 2008. The effect of dieta.ry fat level on the response of broiler chicks to betaine and choline supplements. Journal of Biological Sciences, 8 (2) : 362 -367.
8[1]Pesti,G.M..Sulfur amino acid and methyl donor status of corn-soy diets fed to starting broiler chicks and turkey poults[J].Poultry Sci.,1979,58:1541-1547
9[2]Miles,R.D.,Ruiz,N.,et al.Dietary conditions necessary for a methyl donor response in broiler and laying hens fed a cornsoybean meal diet[J].Poultry Sci.,1987,66:29-34
10[3]Finkelstein,J.D..Methionine metabolism in mammals:the biochemical basis for homocystinuria [J].Metabolism,1974,23:387-399
