The composition and contents of amino acids in three kinds of staple food bamboo(Bashania fargesii,Fargesia qinlingensis and F.dracocephala)for giant panda in Qinling Mountains were determined by the automatic amino acid analyzer and their nutrition was evaluated together.The results showed that samples were hydrolyzed with acid into 17 kinds of amino acids including 8 kinds of essential amino acids.For all samples,Glu content was highest,followed by Asp,Leu,Phe,Val,Ala,Lys,Gly,Pro,Thr,Ile,Arg and Ser,and C...