Effects of dietary lysine level on growth, feed utilization, serum biochemical indexes, lysine metabolizing enzyme activity and related gene expression of Leuciscus brandti

• NIU Xiaotian, 
• ZUO Yanan, 
• ZHANG Jiasong, 
• CHEN Xiumei, 
• LI Muyang, 
• TIAN Jiaxin, 
• KONG Yidi, 
• WANG Guiqin