35% protein significantly (Pb0.05) lower than that of the other
groups.
Dressout percentage was not affected by either protein levels or
lipid levels; whereas, condition factor (CF) improved significantly as
protein (Pb0.01) and lipid (Pb0.05) levels increased (Table 3).
Protein efficiency ratio (PER) and hepatosomatic index (HSI)
decreased significantly (Pb0.05) with increasing protein levels
(Table 3). PER of fish fed 27% protein was only significantly
(Pb0.05) higher than that of fish fed 35% protein. However, HSI of
fish fed 27% protein was significantly (Pb0.05) higher than that of
other groups. HSI generally decreased as lipid levels increased, but no
significant difference was observed. Nitrogen retention increased
significantly as protein levels (Pb0.01) decreased and lipid levels
(Pb0.05) increased (Table 3). Energy retention was significantly
(Pb0.05) affected by dietary lipid levels, and increased as lipid levels
increased (Table 3).