Two different growth experiments with same diets were performed in an indoor
culture system (300 L/tank) (Paper IV) and an outdoor culture system (earthen
ponds) (Paper V). The most obvious findings were that the daily weight gain
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(DWG) was much higher (3.2˗ to 6˗fold) under outdoor culture conditions compared
with indoor conditions, although the fish were fed the same diet. The feed
conversion improved by 0.2 to 0.7 units (kg feed DM/kg weight gain) in the outdoor
group (Table 12).