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首页> 外文期刊>Agriculture, Forestry and Fisheries >Bacteriological Quality of Tilapia Fish from Treated Wastewater in Peri-Urban Areas, Morogoro, Tanzania
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Bacteriological Quality of Tilapia Fish from Treated Wastewater in Peri-Urban Areas, Morogoro, Tanzania

机译：坦桑尼亚莫罗哥罗城郊地区经处理的废水中罗非鱼鱼的细菌学质量

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摘要

The aim of this study was to assess faecal bacterial contamination in tilapia fish from wastewater treatment ponds at Mzumbe and in pristine water in Mindu dam. Tilapia fish (fish flesh and fish intestines) and water samples were analysed for Escherichia coli and total plate count. The concentration of E. coli in fish intestines ranged from about 1 - 3.5 log cfu/g and <1 log cfu/g in fish flesh. Total plate count ranged from 1 - 3 log cfu/g in fish flesh and 2 - 6 log cfu/g in fish intestines. The concentration of E. coli in pristine water in Mindu dam ranged from 0 to 15 cfu/mL. From the inlet to outlet of Mzumbe wastewater treatment pond, there was a significant reduction (p<0.05) of E. coli concentration along the gradient from 2.05 to 0.55 log cfu/mL, respectively. These findings demonstrated that tilapia fish from the two study sites were of good quality for human consumption based on microbial faecal contamination. On the other hand treated wastewater of the quality found in this study may be used for aquaculture. However, continuous monitoring for bacteriological quality and safety parameters including E. coli and total plate count is required.
机译：这项研究的目的是评估Mzumbe废水处理池中罗非鱼和Mindu大坝原始水中粪便中细菌的污染。罗非鱼鱼（鱼肉和鱼肠）和水样中的大肠杆菌和总板数进行了分析。鱼肠中大肠杆菌的浓度范围约为1-3.5 log cfu / g，而鱼肉中＜1 log cfu / g。在鱼肉中总板数范围为1-3 log cfu / g，在鱼肠中为2-6 log cfu / g。 Mindu大坝原始水中大肠杆菌的浓度范围为0至15 cfu / mL。从Mzumbe废水处理池的入口到出口，大肠杆菌浓度分别沿从2.05 log cfu / mL的梯度显着降低（p <0.05）。这些发现表明，基于微生物粪便污染，来自两个研究地点的罗非鱼鱼具有良好的食用质量。另一方面，本研究中发现的经处理的废水质量可用于水产养殖。但是，需要连续监测细菌质量和安全参数，包括大肠杆菌和总板数。

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