Effect Of Dietary Supplementation Of Biofloc Meal With Tryptophan &Lysine On Growth And Survival Of Mono Sex Tilpa

Abstract

A 60-day indoor growth trial was conducted to study the effect of dietary supplementation of biofloc meal with tryptophan and lysine on growth and survival of mono sex tilapia. Six isonitrogenous and isoenergetic experimental diets wereformulated viz., as 0.2%, 0.3%, 0.4% tryptophan (D1,D2,D3) and 1.2%, 1.4%, 1.8% lysine(D4,D5,D6) enriched with 20%bioflocmeal included diets.This feeding trial was conducted in 18 numbers of 40 L plastic troughs in triplicates, utilizing mono sex tilapias weighing with an average of 2 g size. During the experimental period, water quality parameters were measured and recorded daily. Among the experimental diets highest mean body weight of tilapia were recorded in D4 (46.35±3.95g) followed by D2 (41.37±1.98g), D5 (40.1±0.87 g) and D1 (34.36±0.96 g). Hence, the present study was assessed that diet with 20% biofloc meal supplemented with 1.2 % lysine  can improve the growth and survival of mono sex tilapia without any adverse effect on the fish performance