The present study was undertaken with an objective of evaluating the effect of dry biofloc meal on growth performance of Litopenaeus vannamei fed with different inclusion levels of dry biofloc meal such as 20% (T1), 30% (T2), 40% (T3), 50% (T4) and Commercial shrimp feed (C). Post larvae were fed with different experimental feeds, thrice a day, at the rate of 8.1 - 2.3% based on the total body weight. After 60 days, higher weight gain was recorded in commercial feed (C - 11.55 g) followed by 20% inclusion level of dry biofloc meal (T1 - 10.76 g), 30% dry biofloc meal (T2 - 10.26 g), 40% dry biofloc meal (T3 - 9.18 g) and 50% dry biofloc meal (T4 - 7.8 g). One way ANOVA of the data collected clearly affirmed that significant differences (p<0.05) was observed among the different inclusion levels of dry biofloc supplements. From this study, it was concluded that between the different inclusion levels of dry biofloc supplementation and control diet tested, control diet (commercial shrimp feed - C) exhibited highest growth followed by T1 (20% dry biofloc meal), T2 (30% dry biofloc meal), T3 (40% dry biofloc meal) and T4 (50% dry biofloc meal). Among the different inclusion levels of dry biofloc meal diets tested, 20% inclusion (T1) showed better growth rate than other inclusion levels. Apparently, among the different test diets tested (T1, T2, T3, T4 and C), no significant differences were observed between C & T1. Although Control diet (commercial shrimp feed) showed higher growth rate than T1 (20 % dry biofloc meal), considering the relative growth performance and cost of the feed, T1 diets could be considered for the culture of Litopenaeus vannamei.
Key words : Dry biofloc meal supplements, biogrowth, Litopenaeus vannamei.