Affiliation:
1. Section of Veterinary Public Health, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, South Africa.
2. Directorate of Veterinary Public Health, Department of Land Reform and Rural Development, South Africa.
Abstract
Background and Aim: Mechanically recovered meat (MRM) products have been linked to outbreaks of human salmonellosis. However, no studies have investigated the prevalence of Salmonella species in MRM products in South Africa despite the products being imported. Therefore, this study aimed to estimate the prevalence and factors associated with Salmonella spp. contamination of mechanically recovered poultry meat (MRPM) imported into South Africa.
Materials and Methods: This study used secondary data of MRPM consignments imported through a port entry into South Africa from May 2016 to December 2017. Crude and factor-specific proportions of Salmonella positive MRPM and their 95% confidence intervals were calculated. A logistic regression model was used to assess the association among country, season, importer, year, and MRPM Salmonella status.
Results: A total of 8127 MRPM consignments were imported. Seventeen percentages (17.18%, 985/5733) of consignments tested positive for Salmonella species and only 364 isolates were serotyped. Salmonella Heidelberg (73.90%, 269/364) was the most common serotype followed by Salmonella Infantis (6.59%, 24/364), Salmonella Salamae (4.67%, 17/364), and Salmonella Schwarzengrund (3.57%, 13/364). The odds of a consignment testing positive for Salmonella spp. was higher among consignments from country-B (Odds Ratio [OR]: 3.958, p < 0.0001) compared to “All others.” The odds of testing positive for Salmonella were also higher among consignments imported in autumn (OR: 1.488, p < 0.0001) but lower among those imported in spring (OR: 0.767, p = 0.0004) and summer (OR: 0.843, p < 0.0001) when compared to the winter season. Consignments imported in 2016 compared to 2017 were 1.563 times (p < 0.0001) as likely to test positive for a Salmonella species.
Conclusion: Salmonella species were reported in MRPM consignments in this study with Salmonella Heidelberg being the most common serotype. Furthermore, some Salmonella serotypes reported in this study have been implicated in foodborne disease outbreaks. Country of origin, season, and year of importation were significantly associated with the odds of a consignment testing positive for Salmonella species.
Keywords: foodborne, import, mechanically recovered poultry meat, risk factors, Salmonella, zoonoses.
Reference71 articles.
1. Chauhan, P., Vishal, K., Yadav, J.P., Singh, R., Amit, S.K.S., Choudhary, S.S. and Singh, S.V. (2017) Mechanically deboned Poultry Meat and its packing. Sch. J. Agric. Vet. Sci., 3: 37–41.
2. Hecer, C. and Sözen, B.H.U. (2011) Microbiological properties of mechanically deboned poultry meat that applied lactic acid, acetic acid and sodium lactate. Afr. J. Agric. Res., 6(16): 3847–3852.
3. European Food Safety Authority (2013) Scientific Opinion on the public health risks related to mechanically separated meat (MSM) derived from poultry and swine. EFSA J., 11(3): 3137.
4. Bureau for Food and Agricultural Policy. (2019) Import Replacement in the South African Poultry industry. Bureau for Food and Agricultural Policy (BFAP), Italy.
5. Olobatoke, R.Y. and Mulugeta, S.D. (2015) Incidence of non-typhoidal Salmonella in poultry products in the North West Province, South Africa. S. Afr. J. Sci., 111(11): 1–7.