Abstract[1]
Nowadays dietary supplements such as immunostimulants and prebiotics are being applied as a potential replacement of antibiotics in preferment of health and creation resistance against diseases in aquaculture. This survey was conducted to evaluate the efficiency of commercial prebiotic Immunogen with main ingredients 30% (1, 3-1,6) ßglucan and 18% mannanoligosaccharide in ration of great sturgeon (Huso huso) juveniles in 8weeks in Shahid Marjani Sturgeon Propagation and Rearing Center in summer 2009. Hematological and immunological indices of great sturgeon juveniles in five treatments (0, 0.5%, 1%, 2% and 4%) of Immunogen in diet statistically compared. Three weight groups of great sturgeon juveniles with average weight 8.71±0.02 g, 25.15±0.01 g and 53.69±0.02 g were stocked in tanks and fed six times a day. The results showed the number of neutrophil in fishes fed with the diet supplemented with 0.5%, 1% and 4% Immunogen was significantly higher (P<0.05) than the control. Level of immunoglobulin M (IgM) in fishes fed with the diet supplemented with 0.5% Immunogen was higher than the other diet treatments. No significant difference was observed in other hematological indices between three weight of treatments and five treatments of Immunogen (P>0.05). It seemed that Immunogen in concentration 0.5% can serve as functional feedstuffs in the diet of great sturgeon juveniles by stimulating immunity responses.
*- Corresponding Authors; Email: mohajer_m@hotmail.com
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