Optimum lysine requirement of juvenile Pacific white shrimp, Litopenaeus vannamei when fermented soybean meal partially replacing fish meal in the feed

• GUO Xu, 
• DAI Xilin, 
• HUA Xueming, 
• YU Zhongli, 
• GAO Xuezhong, 
• WEI Xiang, 
• XU Lin