The effects of Amax yeast fed to Persian sturgeon (Acipencer persicus) larvae via bioenrichment of Daphnia [sup][/sup]magna
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2011, Vol 4, Issue 3
Abstract
This study was carried out to evaluate the effect of the product of commercial live bakers’ yeast (Saccharomyces cerevisiae) so called Amax on the growth and survival of Persian sturgeon (Acipenser persicus) larvae via enrichment of Daphnia magna. The blends of Amax were used in three concentrations of 50, 100, 150 mg L[sup]-1[/sup]with Daphnia in suspension of broth. Every day Daphnia by one of concentrations was bioencapsulated for 10 hours and Persian sturgeon larvae were fed on it. The Acipenser persicus larvae were fed from Daphnia on the base of the 50 percent of their body weight fivetimes a day. The control group was fed on not enriched Daphnia. The gainedbody weight in experimental treatments of sturgeon larvae had significant difference compared to control treatment (p<0.05). In experimental treatments, Food Conversion Efficiency was increased while the Relative Food Intake significantly decreased (p<0.05). Food efficiency was increased significantly (p<0.05) in experimental treatments. The Amax had significant positive effects on the Specific Growth Rate (SGR), Average Daily Growth (ADG), Relative Gain Rate (RGR), Growth Conversation Efficiency (GCE), Daily Growth Coefficient (DGC) and Thermal Growth Coefficient (TGC) in comparison with control treatment (p<0.05). No significant difference in the condition factor was observed (P>0.05). The Amax had significant positive effects on survival rate in comparison with control treatment (p0.05). The experiments indicated that the product of Saccharomyces cerevisiae has a high ability to increase the growth parameters and feeding efficiency in cultivation system of sturgeon fish.
Authors and Affiliations
Mohammad Lashkar boloki, Hojatollah Jafaryan, Moein Faramarzi, Hosein Adineh
Keywords
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