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Integrated production of Nile tilapia juveniles and lettuce using biofloc technology
Aquaculture International ( IF 2.2 ) Pub Date : 2020-10-06 , DOI: 10.1007/s10499-020-00608-y
Sara M. Pinho , Luiz Henrique C. David , Simon Goddek , Maurício G. C. Emerenciano , Maria Célia Portella

The aim of the present study was to evaluate the use of the technology we have named for the first time as FLOCponics (biofloc + hydroponic) (FP) and conventional aquaponics (AP) systems in producing Nile tilapia (Oreochromis niloticus) juveniles and lettuce (Lactuca sativa). The experiment was carried out for 46 days and consisted of two cycles of lettuce production (23 days each) and one cycle of juvenile production. The physical–chemical variables of the water, zootechnical performance of the fish, growth performance and visual characteristics of the plants, nutrient dynamics, and characterization of the planktonic community were evaluated in both systems. The results showed better fish productive performance in FP, with a mean final weight of 36.7 g compared with 34.9 g in AP. For plants, the Cycle 2 in the AP system showed the best plant growth and visual results (98% of the plants received the highest scores—grades A (excellent) and B (good)—on the plant quality index), whereas in FP only 37% achieved these grades in the same cycle. The results suggest that the integrated production of tilapia juveniles and lettuce using FP might be technically feasible if specific fertilization management or mechanisms are developed to refine the critical points of the system (e.g., nutrient imbalance and solids accumulation in the plant roots) to improve plant production.



中文翻译:

利用生物絮凝技术综合生产尼罗罗非鱼幼鱼和生菜

本研究的目的是评估我们首次命名为FLOCponics(生物絮凝+水培)(FP)和常规鱼菜共生(AP)系统的技术在生产尼罗罗非鱼(Oreochromis niloticus)少年和生菜(紫花苜蓿)。实验进行了46天,包括两个生菜周期(每个23天)和一个少年周期。在这两个系统中都评估了水的物理化学变量,鱼类的动物园技术性能,植物的生长性能和视觉特性,营养动态以及浮游生物的特征。结果显示,FP中鱼类的生产性能更好,平均最终重量为36.7 g,而AP中为34.9 g。对于植物,周期2AP系统中的植物表现出最佳的生长和视觉效果(98%的植物在植物质量指标上得分最高,分别为A级(优异)和B级(良好)),而FP中只有37%的植物达到了这些等级在同一周期内。结果表明,如果开发了特定的施肥管理方法或机制来完善系统的关键点(例如,营养失衡和植物根系中的固体积累),从而改善植物的生长状况,那么使用FP进行罗非鱼幼鱼和生菜的综合生产在技术上可能是可行的。生产。

更新日期:2020-10-07
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