Initial body weight (IBW), final body weight (FBW), special growth ratio (SGR), survival rate, feed intake (FI), feed efficiency (FE), hepatopancreas weight (HW), protein content (HPC) and somatic index (HSI) and intestinal weight (IW), intestinal protein content (IPC), intestinal length (IL), inte

Data represent means ± S.D. Values within the same row with different superscripts are significantly different (P<0.05).
SGR = 100× (ln final weight - ln initial weight)/number of days.
FE = 100× (g weight gain/g feed intake).
HPC = 100×(g hepatopancreas protein/g wet hepatopancreas weight).
HSI = 100×(g wet hepatopancreas weight/g wet body weight).
IPC = 100×(g intestine protein/g wet intesitine weight).
ILI = 100× (cm intestine length/cm total body length).
ISI = 100×(g wet intestine weight/g wet body weight).