Abstract: Abstract: An 8 weeks feeding trial was conducted to evaluate the effects of dietary protein level on growth， feed utilization and digestive enzyme activities of juvenile Chinese soft\|shelled turtle， Pelodiscus sinensis Japanese strain with the primary weight of （370±005） g. Five iso\|energetic diets were formulated to contain graded protein levels of 34%， 37%， 40%， 43% and 46%. The results showed that the growth performance of the soft\|shelled turtles and feed utilization ratio were significantly increasing with the dietary protein level enhancing （P<005）， while no further growth increase was observed beyond 43% protein level （P>005）. The pepsin activity in stomach， and the protease in liver and intestinal tract increased significantly with increasing dietary protein levels. The highest values in stomach and liver were observed in 43% protein group， while for intestinal tract was in 46% protein group. The amylase activities in all detected organs and lipase activity in liver decreased significantly when dietary protein levels increased （P<005）， however， lipase activities in stomach and intestinal tract showed indistinctive decline trend among the dietary treatments （P>005）.

Key words: Pelodiscus sinensis Japanese strain, dietary protein levels, growth performance, digestive enzyme