Antimicrobial Susceptibility Pattern of S. aureus Isolated from Sheep and Goat Carcasses

Melaku Tefera1, Hailelule Aleme2, Samson Girma1, *, Abraham Ali1, Getachew Gugsa2, Firehiwot Abera1, Redwan Muzeyin1, Tesfaye Legesse1, Waktole Gobena1, Surafel Fentaw1, Rajha Abubaker1, Alemayehu Tadesse1, Almaz Gonfa1
1 Ethiopia Public Health Institute, Addis Ababa, Ethiopia
2 Mekele University, Veterinary Medicine, Mekele, Ethiopia

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Creative Commons License
© 2019 Jugajyoti et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Ethiopian Public Health Institute, Gulelle, Arbegnoch Street; Tel: +251910485130; Email:



Staphylococcus aureus is a leading cause of food poisoning resulting from the consumption of contaminated food with staphylococcal enterotoxins. Raw meat is a good medium for the survival and spread of drug-resistant S. aureus.


To look for the prevalence of drug-resistant S. aureus in Addis Ababa abattoir enterprise.

Material & Methods:

A cross-sectional study was conducted from November 2013 to April 2014 in Addis Ababa abattoir enterprise. A total of 185 swab samples were collected from the carcasses of sheep, goat and slaughtering materials such as workers’ clothes, vehicles, knives and hands. Isolation and identification of S. aureus were conducted using the conventional culture methods and signatory tests. Antimicrobial sensitivity was conducted using standard methods.


The overall prevalence rate for S. aureus in the present study was 33%. The higher prevalence rates of S. aureus were recorded from sheep carcasses 36%, followed by 30% from the environment and 16% from goat carcasses. The variation in the prevalence of S. aureus between the carcasses and environment was not statically significant (p > 0.05). More than 90% of S. aureus strains were sensitive to vancomycin, chloramphenicol, gentamicin and kanamycin. While 86.9% S. aureus strains were resistant to penicillin G 80.3% resistant to ampicillin, 63.9% resistant to ceftriaxone, 62.3% resistant to oxacilin, and 62.3% resistant to cefoxitin respectively.


The present study indicated that the quality of slaughtered sheep carcasses was more contaminated by S. aureus as compared to goat carcasses, during slaughtering, processing, handling and transportation. The presence of MDR strain in the carcasses demonstrates that there is a growing need to control antimicrobial resistance in sheep and goat carcasses.

Keywords: Abattoir, Antimicrobial, Carcasses, Enterotoxin, Sensitivity, S. aureus.