Growth curve and SGR of grass carp during compensatory growth. (A) Growth curve of grass carp during compensatory growth. Fish in experimental and control groups were weighted at six time points and the weights were subjected to curve drawn. In each time point, 15 grass carp from three subgroups were random selected and weighted. Data are given as mean ± standard deviation (S.D.). (B) SGR of grass carp during compensatory growth. SGRs were calculated for control and experimental group during the three time intervals: 0 ~ 1 weeks, 1 ~ 2 weeks, and 2 ~ 5 weeks. Asterisks represent significant differences between groups at each time intervals (P < 0.01) that calculated by T test.