Effect of Mannan Oligosaccharide on Growth Body Composition and Antioxidant Enzyme Activity of Tilapia Oreochromis niloticus

HUNT, ARZU ÖZLÜER | YILMAZ, FERBAL ÖZKAN | YALIN, SERAP

The effects of three inclusion levels of mannan oligosaccharides (MOS) derived from the outer cell wall of a select strain of Saccharomyces cerevisiae (Bio-Mos, Alltech Inc, USA) on growth, feed utilization, body composition, and antioxidant enzyme activity of tilapia (Oreochromis niloticus) were determined. Specimens (12 g) were fed a commercial diet supplemented with 0‰, 2.5‰, 3.5‰, or 4.5‰ dietary MOS for 60 days. Food conversion rates (FCR), specific growth rates (SGR), and the biochemical composition of muscle tissue were determined. Growth was greatest, protein was highest, and lipid was lowest in fish fed the 2.5‰ MOS diet. The FCR was significantly better in all MOS-treated groups than in the unsupplemented control. At the end of the study, antioxidant enzyme activity of superoxid...