Effects of dietary Eucommia ulmoides on growth, flesh quality, and collagen gene expression of grass carp (Ctenopharyngodon idella)

• XU Xiaoying, 
• LI Xiaoqin, 
• SUN Wentong, 
• JIANG Weibo, 
• PAN Wenqian, 
• WANG Junpeng, 
• TU Zhihan, 
• LENG Xiangjun