The combined effect of the behavior and hormone secretion may
also affect the allocation of the consumed energy. The metabolic energy
accounts for a large proportion in the energy distribution of decapod
crustaceans. Therefore, the change of metabolic energy
determined the energy accumulation for growth (Paul and Akira,
1989; Wang et al., 2005). In this study, the energy allocation for respiration
of shrimp in CL treatment was the highest and the energy allocation
for growth was significantly lower than that in FL2 or FL3
treatment, which led to lower growth in the CL treatment. In contrast,
the energy allocation for respiration under the FL3 treatment was
lowest and the energy allocation for growth was highest, which
might be another reason for the better growth of shrimps in FL3
treatment.