The Effect of Mannan-Oligosaccharide (MOS) as a Feed Supplement on Growth and Some Blood Parameters of Gilthead Sea Bream (Sparus aurata)

Özet

The study investigated the effect of increasing dietary inclusion of Mannan oligosaccharide (MOS) on growth and bloodparameters of sea bream (Sparus aurata). Varying concentrations of MOS were added to commercial sea bream feed at 0‰(control), 1, 2, 3 and 4‰. At the end of the 15 week trial, control group had the highest final weight, specific growth rate, feedconversion ratio and protein efficiency ratio (P 0.05). Survival rates were higher in the MOS treatment groups. Blood parameters, did not differ among treatment groups(P>0.05). The lowest Alkaline phosphatase (ALP) value was measured in the control group wheras the highest was recordedin the 4‰ MOS group. The lowest level of triglycerides was measured in the 4‰ MOS group, while the highest level oftriglycerides was measured in the control group. Cholesterol level was lowest in the 2‰ MOS group (P<0.05). The studyshowed that the inclusion of dietary MOS has no negative effects on growth and blood parameters in sea breamş. However,dietary MOS inclusion led to higher survival rate in trial fish.