The study on the crude protein content and amino acid composition in Brassica napus feed

• LIU Ping, 
• ZHANG Lin, 
• WANG Tao, 
• WANG Jingze, 
• CHEN Yanping, 
• WU Yuyao, 
• GONG Yonghui, 
• QIN Lijun, 
• DAI Wendong