THE EFFECTS OF MANNAN OLIGOSACCHARIDE (MOS) AND VITAMIN B12 ADDITIVES ON THE LIVER AND INTESTINE HISTOLOGY OF THE CARP FRY (CYPRINUS CARPIO L-1758)

In this study, four hundred (400) carp frys (Cyprinus carpio L. 1758) were fed for 90 days with commercial feed containing Mannan oligosaccharide (MOS) and Vitamin B-12. The effects of feeding with MOS and Vitamin B-12 additives in different proportions on the parameters on intestine and liver histology of the carps were studied. As a result of this particular study, no pathological disorder was observed in the liver cells based on histologic reviews. The villi in the intestine showed slight increase both in terms of length and thickness within the group fed with MOS, while the other groups fed without MOS showed no alteration for this particular organ.