Effect of dietary mannan oligosaccharide on growth performance, survival, body composition and intestinal microflora in great sturgeon juvenile (Huso huso Linnaeus, 1754)

• Main Authors: Ghobadi, Sh., Razeghi Mansour, M., Akrami, R., Amani Denji, K., Esmaeili Molla, A.
• Format: Article in Journal/Newspaper
• Language: Persian
• Published: 2012
• Subjects: Aquaculture; Beluga; Beluga*
• Online Access: http://aquaticcommons.org/24895/; http://aquaticcommons.org/24895/1/JMST_Volume%2010_Issue%204_Pages%2067-77.pdf

The effect of dietary mannan oligosaccharide (MOS; active MOS®) on growth, survival, body composition and intestinal microflora in giant sturgeon juvenile (Huso huso) were investigated for 46 days. Basal diet were supplemented with 0 (control), 2 and 4 g/kg MOS in a totally randomized design trial in triplicate groups. The experiment was carried out in 900 L fiberglass tanks. Fifteen juveniles beluga with initially average weight of 46.89 ± 0.57 g were stocked and fed to satiation daily.Data was analysed by regression analysis and pearson correlation test. There were no significant differences in growth and feeding parameters between fish fed control and MOS supplementation diets (P>0.05), but group treated with 4 g/kg MOS showed significant differences in food intake (P<0.05).The highest and the lowest growth performance were observed in 2 and 4 g/kg MOS treatments, respectively. There were no significant differences in survival rate among experimental groups (P>0.05). Fish treated with 2 g/kg MOS showed significant differences in fat content of muscle tissue (P<0.05), but no significance difference in protein, ash and moisture (P>0.05) were recorded. No significant difference was observed in intestinal lactic acid bacteria among the groups (P>0.05). The experiment indicated that the prebiotic mannan oligosaccharide didn’t influence the growth performance in beluga juvenile and it is not appropriate for supplementation in the diet of this cultured species.