exuviate

Where G[E.sub.d], G[E.sub.f], and G[E.sub.e] were gross energy of diet, feces, and exuviations respectively, [F.sub.d], [E.sub.d], and [U.sub.N] were dry weight of diet, dry weight of feces and nitrogen of excretion respectively.

Where [I.sub.N], [G.sub.N], [F.sub.N], and [E.sub.N] were nitrogen content in ingested diets, body growth, feces and exuviations.

The energy loss through respiration (%IE) was greater in small shrimp than that in large shrimp, and energy loss of exuviations (%IE) was greater in large shrimp than that in small shrimp (Table 4).

vannamei juveniles showed a true physiologic adaptation mechanism to food deprivation: no changes in body weight but loss in hepatosomatic index, no exuviations, including the utilization of HP soluble proteins (a drop from 269 to 53 mg/mL).

Under starvation conditions, a first event commonly observed is a weight loss in relation to energy expenditure for basal metabolism; after a few days, shrimp in premolt stages will not evolve further and refrain from exuviation, saving around 1.4 kJ (Read & Caulton 1980), which is the energy expenditure at molt.