Effect of Dietary Mannan Oligosaccharide on Growth Performance, Survival, Body Composition and Some Hematological Parameters of Carp Juvenile (Cyprinus Carpio)

Effect of dietary mannan oligosaccharide (MOS; activeMOS®) on growth, survival, body composition and some hematological parameters in carp (Cyprinus carpio) juvenile were investigated for 45 days. Basal diet were supplemented with 0 (control), 1.0, 2.0 and 3.0 g kg-1 MOS in a totally randomized design trial in triplicate groups. The experiment carried out in 100 liters PVC tanks. 20 juvenile carp with initially average weight 1.3 ± 0.17 g were stocked in tanks and fed up a day. There were no significant differences in growth and feeding parameters between fish fed control and MOS supplementation diets (P > 0.05). The highest and the lowest growth performance were observed in 1.0 g kg-1 MOS and control treatment, respectively. There were no significant differences in survival rate and body composition among experimental groups (P > 0.05), but in group treated with 1.0 g kg-1 MOS showed higher protein carcass (P > 0.05) than other group. An elevation of hematocrit, lymphocyte (P < 0.05), WBC, RBC, Hb and eosinophil (P > 0.05) were found in the fish fed diet 1.0 g kg-1 MOS. The result indicated that 1.0 g kg-1 MOS can improved growth performance, survival, final production and some blood parameters of carp juvenile and it is appropriate for supplementation in the diet of cultured juvenile carp.