Effects of dietary mannan-oligosaccharide on growth, intestine and liver histology of the African catfish (Clarias gariepinus (Burchell, 1822))

Different levels of dietary mannan-oligosaccharide (MOS) administered for 80 days to African catfish (Clarias gariepinus) were evaluated for their efficacy on growth parameters, and intestine and liver histology. The following levels of MOS were used in commercial trout diet: 1 ppt, 2 ppt and 3 ppt during the trial. At the end of the feeding period the live body weight gain and feed conversion ratio, hepatosomatic and gonadosomatic index values were found similar for all experimental groups (P>0.05). Also, dietary MOS did not significantly affect the liver and intestine histology.