Survival rate (%) = final number of prawns × 100/ initial number of prawns
Weight gain = final weight (g) - initial weight (g)
Length gain = final length (cm) - initial length (cm)
% weight gain = final weight (g) – initial weight (g) × 100/initial weight
Absolute daily weight gain =final weight (g) – initial weight/number of days
Specific growth rate = [ln final weight (g) - ln initial weight (g)]/days × 100
Feed conversion ratio = feed intake (g)/weight gain (g)