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Bacteriological Quality of Tilapia Fish from Treated Wastewater in Peri-Urban Areas, Morogoro, Tanzania
Agriculture, Forestry and Fisheries
Volume 5, Issue 5, October 2016, Pages: 202-206
Received: Aug. 16, 2016; Accepted: Sep. 5, 2016; Published: Oct. 6, 2016
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Ofred Jonas Mhongole, Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Chuo Kikuu, Morogoro, Tanzania
Robinson Hammerthon Mdegela, Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Chuo Kikuu, Morogoro, Tanzania
Lughano Jeromey Moses Kusiluka, Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Chuo Kikuu, Morogoro, Tanzania; Office of the Vice Chancellor, Mzumbe University, Morogoro, Tanzania
Anders Dalsgaard, Department of Veterinary Disease Biology, Copenhagen University, Frederiksberg C, Denmark
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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.
Escherichia coli, Fish Culture, Fish Flesh, Fish Intestines, Water
To cite this article
Ofred Jonas Mhongole, Robinson Hammerthon Mdegela, Lughano Jeromey Moses Kusiluka, Anders Dalsgaard, Bacteriological Quality of Tilapia Fish from Treated Wastewater in Peri-Urban Areas, Morogoro, Tanzania, Agriculture, Forestry and Fisheries. Vol. 5, No. 5, 2016, pp. 202-206. doi: 10.11648/j.aff.20160505.19
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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