Cook, Elizabeth A.J.

Dohoo, I.

Kankya, C.

Kivali, Velma

Roesel, Kristina

Rösler, U.

Sinh Dang-Xuan

CGSpace

Microbial contamination at slaughter and retailpoints of the pork value chain in selected districtsof UgandaVelma Kivali1,2, Uwe Rösler2 , Clovice Kankya3, Sinh Dang-Xuan1, Ian Dohoo1, 4 , Kristina Roesel1 & Elizabeth Anne Jessie Cook1 1International Livestock Research Institute, 2Freie University of Berlin, 3Makerere University, 4 University of Prince Edward IslandIntroductionBacterial foodborne pathogens remain a global public health concern with a huge health burden. Pigs and pork have been implicatedin transmission of non-typhoidal Salmonella (NTS) through pork to humans. Uganda ranks top in consumption of pork in East Africayet the safety of pork and the risks of NTS infection to pork handlers remains uninvestigated. .This study aims to establish levels of contamination and presence of NTS at the point of slaughter and retail of the pork value chainand factors that influence those levels. It will also establish genetic relatedness of NTS from pigs, humans and the slaughter and retailenvironments.MethodsThis is a cross-sectional study in Lira, Mbale, Soroti and Kampala districts. Sample and data collection is in the final stages. Pigspresented for slaughter are sampled and carcasses tracked to the point of retail and sampled. Samples from slaughter and retailenvironments are also collected.Samples are cultured for NTS, and levels of bacteria determined by total coliform counts. Meat handlers at the point of slaughter andretail are investigated for NTS. Demographic data and risk factors for NTS infection in humans is captured using questionnaires. Anobservational tool is used to collect data on factors at slaughter and retail that influence occurrence of contamination.Corresponding author Velma Kivali V.kivali@cgiar.org ILRI c/o Bioversity International P.O. Box 24384, Kampala Uganda+256 392 081 154/155 This document is licensed for use under the Creative Commons Attribution 4.0 International Licence. September 2022.22 September 2022Findings ILRI thanks all donors and organizations which globally support its work through their contributions to the CGIAR Trust Fund.Contribution to Uganda’s livestock development agendaThis research contributes to BUILD’s vision of improving meat safety and occupational health for meat handlers through generationof representative baseline data. This will inform strategies and mitigation measures to reduce occurrence and build-upof bacterial contamination at the point of slaughter which eventually spills over to the consumers. The data can also be usedto monitor impact of strategies and mitigation measures.Conclusion and Limitations There is significant levels of contamination with coliforms and presence of NTS both at slaughter and retail. This can be attributed topoor hygiene and poor pork handling practices which contribute to the build up and propagation of contamination. Isolation of NTSfrom up to 24% of pig mesenteric lymph nodes and coecal content reveals on-farm NTS infection, which is the primary source ofintroduction of NTS into the chain. The main limitation is that the study could not investigate all the points along the chain where thereis possible introduction and propagation of contamination.Fig 1:  Presumptive Non-typhoidal Salmonella from Lira , Mbale and Soroti 

Microbial contamination at slaughter and retail points of the pork value chain in selected districts of Uganda

https://cgspace.cgiar.org/bitstream/10568/122032/1/NTS%20contamination.pdf

Microbial contamination at slaughter and retail points of the pork value chain in selected districts of Uganda

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