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首页> 外文期刊>Arabian Journal for Science and Engineering >Effect of Immobilized Nitrifying Bacterial Consortium on Ammonia Biodegradation in Aquaculture Pond and Enhanced Growth of Labeo rohita: An In Vitro and In Vivo Studies
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Effect of Immobilized Nitrifying Bacterial Consortium on Ammonia Biodegradation in Aquaculture Pond and Enhanced Growth of Labeo rohita: An In Vitro and In Vivo Studies

机译：固定化硝化细菌财团对水产养殖池氨生物降解和Labeo rohita增强生长的影响：体内和体外研究

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摘要

This investigation was carried out to remove total ammonia nitrogen (TAN) in aquaculture system by employing immobilizedheterotrophic nitrifying bacterial consortium. The bacterial consortium was immobilized on biodegradable and low cost,wood powder. Among the three wood powders tested, Thespesia populnae wood powder showed the highest (99%) nitrifyingactivity. Nitrifying bacteria immobilized Thespesia populnae wood powder at three different concentrations was appliedin a 100-L tank stocked with Labeo rohita for TAN removal. The experiment tanks with the addition of immobilized woodpowder were observed TAN concentration below 0.15 ± 0.1 mg/l. This was lower than the control tank without the additionof immobilized wood powder. A highest average body weight gain of Labeo rohita was observed in experiment tanks. Thehaematology profile in experiment tanks revealed a highest Hb and RBC count, reduction in WBC count and low bloodammonia concentration, which was contrary in control tanks. Histological study showed that severe gill damage occurredin control group, whereas experiment fishes possessed normal gill morphology. The immobilized wood powder was alsoapplied in one hectare aquaculture earthen pond and observed a complete TAN elimination within 24 h. The present studyreveals that the heterotrophic nitrifiers immobilized on wood powder could carry out efficient nitrification and thus eliminatesTAN from aquaculture pond water and enhances fish growth.
机译：这项研究是通过使用固定化的异养硝化细菌联盟来去除水产养殖系统中的总氨氮（TAN）的。细菌财团固定在可生物降解的低成本木粉上。在测试的三种木粉中，Thespesia populnae木粉显示出最高的硝化活性（99％）。将固定有三种不同浓度的固定化的Thespesia populnae木粉的硝化细菌应用于装有Labeo rohita的100 L罐中，以进行TAN去除。观察到添加固定木粉的实验罐的TAN浓度低于0.15±0.1 mg / l。这比不添加固定木粉的对照罐低。在实验缸中观察到最高的Labeo rohita平均体重增加。实验池中的血液学特征显示出最高的Hb和RBC计数，WBC计数降低和低血氨浓度，这与对照池相反。组织学研究表明，对照组g鱼发生了严重的damage害，而实验鱼的g鱼形态正常。固定的木粉也被施用到一个公顷的水土池中，并在24小时内观察到TAN完全消除。本研究表明，固定在木粉上的异养硝化剂可以进行有效的硝化作用，从而消除水产养殖池塘水中的TAN并促进鱼类生长。

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