The effects of probiotic bacillus for promotion of growth and feeding parameters in beluga (Huso huso) larvae via feeding by bioencapsulated Artemia.
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2010, Vol 3, Issue 4
Abstract
In this study five species of probiotic bacillus as bacterial blend under the commercial title of Protexin aquatic were used for bioencapsulation of Artemia urmiana (Gunther, 1899). This experiment was conducted in a completely random design. A. urmiana naupli I was used as a vector to carry probiotic bacillus to digestive tract of Huso huso (Linnaeus, 1758) larvae. Nauplii with three concentrations of bacteria, 1×105, 2×105 and 3×105 bacteria per milliliter in suspension of broth for 10 hours were bioencapsulated and beluga larvae were fed by them. Beluga larvae were fed 50 percent of their body weight for 6 times a day. The control treatment was fed by unbioencapsulated artemia nauplii. The results indicated that the probiotic bacillus could influence on growth and feeding parameters in beluga larvae. The final body weight and specific growth rate (SGR) for weight in experimental treatments had significant difference in comparison to control treatment (P<0.05). In experimental treatments the Food efficiency was increased significantly in comparison with control. The probiotic bacillus had significant positive effects on conversion efficiency ratio (CER), Daily growth coefficient (DGC) and average weight gain (AWG) in comparison to control treatment (P<0.05). Also the relative food intake (RFI) significantly decreased (P<0.05) while Protein gain (PG) and Energy retained as protein (PD.KJ day-1) significantly increased (P<0.05).
Authors and Affiliations
Hojatollah Jafaryan, Mohammad Taati, Noor Makhtoumi
Keywords
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