Occurrence of methicillin-resistant staphylococci in the pig-production chain in Ibadan, Nigeria

Onderstepoort Journal of Veterinary Research

Field Value
Title Occurrence of methicillin-resistant staphylococci in the pig-production chain in Ibadan, Nigeria
Creator Lawal, Opeyemi U. Adekanmbi, Abimbola O. Adelowo, Olawale O.
Subject Microbiology; Life Science; Veterinary Microbiology; Food Science methicillin-resistant staphylococci; pigs; pork samples; colonisation; food contamination; food chain
Description Staphylococcus species colonises humans and animals and is a major food contaminant with public health significance. Here, we assessed the occurrence of methicillin-resistant staphylococci (MRS) in the pig-production chain in Ibadan, Nigeria. Nares of 120 pigs and 10 farmers were sampled with sterile swabs whilst 54 pork samples were collected from a retail slaughterhouse. Staphylococcus species were isolated using enrichment, cefoxitin–aztreonam selective broth and Mannitol salt agar. Isolates were tested for susceptibility to cefoxitin (30 μg), oxacillin (1 μg) and vancomycin (30 μg). Methicillin-resistant staphylococci isolates were characterised using conventional biochemical tests. From 184 samples, 364 staphylococcal isolates were obtained. Amongst the 54 pork samples, 44.0% were contaminated with Staphylococcus species. Overall, 9 (2.5%) MRS were obtained and presumptively identified as Staphylococcus xylosus (n = 3), Staphylococcus sciuri (n = 3), Staphylococcus warneri (n = 2) and Staphylococcus cohnii (n = 1). There was no relationship between the prevalence of MRS between pigs and pig handlers in the farms, but Farm 2 had the highest frequency of 66.7% (p 0.05). Piglets had the highest prevalence of 66.7% (p 0.05) whilst MRS was absent in workers and pork samples. This study raises concerns about the cross-contamination of staphylococci in the food chain. Constant surveillance is imperative to ensure food safety.
Publisher AOSIS
Date 2021-11-30
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article —
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/ojvr.v88i1.1959
Source Onderstepoort Journal of Veterinary Research; Vol 88, No 1 (2021); 4 pages 2219-0635 0030-2465
Language eng
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https://ojvr.org/index.php/ojvr/article/view/1959/2306 https://ojvr.org/index.php/ojvr/article/view/1959/2307 https://ojvr.org/index.php/ojvr/article/view/1959/2308 https://ojvr.org/index.php/ojvr/article/view/1959/2309
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Rights Copyright (c) 2021 Opeyemi U. Lawal, Abimbola Olumide Adekanmbi, Olawale Olufemi Adelowo https://creativecommons.org/licenses/by-nd/4.0