and was not significantly affected by any of the treatments either stocking density or
bottom substrate. Shrimp survival rate ranged widely due to the extremely low
survival rate (35 and 38%) observed in the two tanks of treatment C50, while the third
tank of the same treatment had fairly good survival rate (78%). Average daily weight
gain ranged from 0.11 to 0.14 g per shrimp per day in all the treatments, and was not
significantly different among the treatments. FCR was widely ranged from 1.3 to 2.1,
and was not significantly different among the treatments.