Abstract: A total of 54 crossbred growth pigs (Danish×Landrace×Yarksire) at about 17 kg body weight were randomly assigned into 9 treatments (each of which included 3 replicates with 2 growth pigs),it was conducted to study effects of three kinds of copper resources in different levels on tissue copper contents and blood biochemical traits of growing Pigs.The 9 treatments dietary were added with 10 mg/kg, 150 mg/kg, 250 mg/kg copper from CuSO4,TBCC and Cu-AA in basic dietary respectively. Results showed that it had nosignificantly difference among the different 3 resources and 3 copper levels in ADG and feed∶gain(P＞0.05)；The liver and kindey copper contents were increased with the increase of the copper supplementation ( P<0.01),It was great higher in the heart copper content of growing pigs with the 250 mg/kg Cu dietary than with the 150 mg/kg and 10 mg/kg Cu dietary. It was great higher in serum CP activity with high levels copper(P<0.01). It was increased SOD activity with level of 150 mg/kg Cu(P<0.05); it was decreased mucle tissue copper content with copper from CuSO4, it was increased serum CP activity with the resource of AA-Cu(P<0.01).

Key words: copper; tissue copper content; sernm copper enzyme; growing pig