Effect of Hydroyeast Aquaculture as growth promoter for adult Nile tilapia Oreochromis niloticus [electronic resource].

Includes reference.

The objectives of the present study were to evaluate the effects of graded levels of a new commercial probiotic Hydroyeast Aquacunure"' (0,5,10 and 15 g/Kg diet) on both sexes of adult Nile tilapia Oreochromis niloticus, referred to treatments No. T1 T2, T3 and T4, respectively, for males and T5, T6, T7 and T8 treatments for females, on their growth performance, feed and nutrients utilization and carcass composition for 8 weeks. The obtained resuns showed that tested probiotic at level of 15 g /kg diet (T4) and 10 g /kg diet (T7) for adult males and females O. ni/ofieus respectively, significantly (P <- 0.05) enhancing fish growth, feed intake and nutrients utilization, as well as realized slight improving of fish carcass composition. Hence, it could be concluded that Hydroyeast Aquaculture"' probiotic is useful at levels of 15 g /kg diet (T4) and 109 /kg diet (T7) for enhancing production performance of adult males and females Nile tilapia (O. nilotieus) respectively, so may be using of this probiotic led to economic efficiency especially, for fish farming and hatcheries.

Summary in Arabic.

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