Dietary selenium requirement of juvenile oriental river prawn Macrobrachium nipponense

In this study, we evaluated the minimum dietary selenium requirement for juvenile oriental river prawn Macrobrachium nipponense. Dietary selenium deficiency and excess significantly reduced growth, antioxidant ability and immunity of prawn. Our results illustrate that supplementing appropriate amount of dietary selenium is necessary in prawn culturing. The minimum dietary selenium level for maximal growth and antioxidant ability of juvenile M. nipponense is recommended as 0.58-0.68 mg kg− 1 diet based on the analyses of WGR and GSH-Px activity, and 1.07 mg Se kg− 1 diet is required to maximize whole body selenium content. This research will facilitate to the development of practical diet for prawn.