Research Communication

Determination of oxytetracycline residues in cattle meat marketed in the Kilosa district, Tanzania

Zuhura I. Kimera, Robinson H. Mdegela, Consolatha J.N. Mhaiki, Esron D. Karimuribo, Faith Mabiki, Hezron E. Nonga, James Mwesongo
Onderstepoort Journal of Veterinary Research | Vol 82, No 1 | a911 | DOI: https://doi.org/10.4102/ojvr.v82i1.911 | © 2015 Zuhura I. Kimera, Robinson H. Mdegela, Consolatha J.N. Mhaiki, Esron D. Karimuribo, Faith Mabiki, Hezron E. Nonga, James Mwesongo | This work is licensed under CC Attribution 4.0
Submitted: 24 November 2014 | Published: 27 November 2015

About the author(s)

Zuhura I. Kimera, Department of Fisheries Development, Ministry of Livestock and Fisheries Development, Tanzania, United Republic of
Robinson H. Mdegela, Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Tanzania, United Republic of
Consolatha J.N. Mhaiki, Department of Soil Science, Faculty of Agriculture, Sokoine University of Agriculture, Tanzania, United Republic of
Esron D. Karimuribo, Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Tanzania, United Republic of
Faith Mabiki, Department of Physical Science, Sokoine University of Agriculture, Tanzania, United Republic of
Hezron E. Nonga, Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Tanzania, United Republic of
James Mwesongo, Department of Physical Science, Sokoine University of Agriculture, Tanzania, United Republic of

Abstract

Oxytetracycline is used to treat various diseases in cattle. However, its use may be associated with unacceptable residue levels in food. Oxytetracycline residues in tissues from indigenous cattle were determined in a cross-sectional study conducted in the Kilosa district, Tanzania, between November 2012 and April 2013. A total of 60 tissue samples, including muscle, liver and kidney, were collected from slaughterhouses and butchers and analysed for oxytetracycline using high-performance liquid chromatography. Oxytetracycline residues were found in 71.1% of the samples, of which 68.3% were above acceptable regulatory levels. The mean concentration of oxytetracycline across tissues was 3401.1 μg/kg ± 879.3 μg/kg; concentrations in muscle, liver and kidney were 2604.1 μg/kg ± 703.7 μg/kg, 3434.4 μg/kg ± 606.4 μg/kg and 3533.1 μg/kg ± 803.6 μg/kg, respectively. High levels of oxytetracycline residue in meat from indigenous cattle may pose a health threat to consumers in Kilosa. The findings possibly reflect a general lack of implementation of recommended withdrawal periods, ignorance about drug use and lack of extension services. Strict regulation of the use of antimicrobial drugs in the livestock industry and associated testing of animal-derived food sources prior to marketing are required.

Keywords

Oxytetracycline, residues, livestock keepers, Kilosa

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