Bacteriological Evaluation of Poultry Carcasses with A Special Focus on Staphylococcus aureus Prevalence, Enterotoxin Production and Antimicrobial Sensitivity | ||||
| Egyptian Journal of Veterinary Sciences | ||||
| Volume 56, Issue 13, December 2025, Page 639-647 PDF (729.21 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejvs.2025.381475.2821 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Alaa Eldin M.A. Morshdy1; Ehdaa Abdel-Rahman Ahmed Salim2; Rasha M. El Bayomi3; Ahmed Tharwat4; Wageh Sobhy Darwish   5
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| 1Department of Food Hygiene, Safety & Technology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt PO box 44519. | ||||
| 2Food Hygiene, Safety and Technology Department, Faculty of Veterinary Medicine, Zagazig University, Egypt | ||||
| 3Department of Food Hygiene, Safety & Technology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt PO box 44519 | ||||
| 4Food Control Department, Zagazig University | ||||
| 5Professor of food hygiene, Fac. Vet. Med., Zagazig Univ., Egypt | ||||
| Abstract | ||||
| A total of 200 random samples, including 50 samples from each of broiler, baladi chicken, pigeon, and duck. The samples from each species consisted of 25 from each breast and thigh were collected to assess their microbiological quality. The recorded results showed that the highest total bacterial counts (TBC) in the broiler sample were found in the breast and thigh (5.19±0.30, and 5.62±0.29 log 10 cfu/g, respectively), while the lowest TBC was recorded in the pigeon's breast (4.19±0.30 log 10 cfu/g). The highest mold count was found in the baladi samples (3.01±0.37 log 19 cfu/g), and the lowest count was recorded in the pigeon thigh samples (2.28±0.12 log 10 cfu/g). The highest Staphylococcus aureus (S. aureus) counts were recorded in the broiler samples (thigh, and breast) at 4.56±0.20, and 4.42±0.22 log 10 cfu/g. The highest prevalence rates of S. aureus were recorded in broiler thigh (64%), and breast samples (48%), with production of enterotoxin A from 2 isolates. S. aureus isolates recovered from duck samples could produce enterotoxins A, C, and D types. In contrast, S. aureus isolates recovered from baladi and pigeon samples do not show any ability to produce enterotoxins. A significant number of S. aureus isolates demonstrated resistance to Neomycin (100%), Nalidixic acid (38.8%), Colistin (80.8%), Tetracycline (68.1%), Sulphamethoxazole (61.7%), and Penicillin (44.6%). Conversely, the isolates exhibited the highest sensitivity to Daptomycin (97.9%), Vancomycin (93.6%), Oxacillin (91.4%), Levofloxacin (83.0%), Meropenem (78.7%), Gentamicin (72.3%), and Cefepime (68.1%). In conclusion, strict hygienic measures should be followed during the preparation of poultry carcasses to reduce the microbial load and enhance the keeping quality. | ||||
| Keywords | ||||
| Poultry carcasses; Microbial contamination; S. aureus; antimicrobial susceptibility | ||||
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