Effects of dietary mannan oligosaccharides on growth, body composition and intestine of the sea bass (Dicentrarchus labrax L.)

The effect of Bio-Mos incorporated into feed formulation on the growth, feed utilization, body composition and histological response of sea bass (Dicentrarchus labrax) was investigated. Final fish weight, feed conversion ratio (FCR), specific growth rate (SGR), protein efficiency ratio (PER), protein productive value (PPV) and energy utilization (EU) of sea bass feed Bio-Mos supplemented diet and the control diet were determined at the end of experiment. Data present mean +/- SD from triplicate determination (n = 3) for a 75-day feeding trial. Different concentrations (0.5, 1.0, 2.0. 3.0 and 4.0 g kg diet(-1)) of Bio-Mos supplementation and a control without Bio-Mos incorporation were fed to the fish, feed in the form of dry diets. Average final weight was significantly higher at 1.0 g kg diet(-1) of Bio-Mos and lowest in control fish group; SGR significantly higher at the 1.0 g kg diet(-1) of Bio-Mos. In addition,, PER, PPV and EU showed the same trend. The chemical body composition, crude protein, dry matter, crude fat and ash were significant (P = 0.01) compared to control groups. We concluded that 1.0 g kg diet(-1) of Bio-Mos improved the growth, feed efficiency, histology intestine and survival of sea bass.