Growth performance of fresh water prawn Macrobrachium rosenbergii under different supplemental feeding options

Abstract

The effect of five different supplementary feeds on growth, survival and production were investigated for juveniles of Macrobrachium rosenbergii. The best growth was obtained with the feed containing 31.50% dietary protein. Feed conversion ratio decreased with increasing weight of prawn and is negatively correlated with dietary protein level. The highest average weight gain (48.03g) of prawn was found in treatment T1. The mean survival rates were found at 86.46, 81.33, 75.33, and 79.44 and 78.33% in T1, T2, T3, T4 and T5 treatments, respectively. The comparable net production of freshwater prawn was (166.14kg/bigha) significantly higher (P≤0.05) in treatment T1 among all the treatments. The feed conversion ratio was the lowest (1.13) and specific growth rate was the highest (2.19%) found in treatment T1.Considering all facts, the better growth performance was recorded in treatment T1 compared to other treatments T2, T3, T4 and T5.