Microbial and antibiotic resistant E. coli contamination in retail eggs produced by alternative and conventional rearing methods
Yükleniyor...
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Hellenic Veterinary Medical Soc
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The aims of this study were to determine: i) the presence of total mesophilic aerobic bacteria (TMAB), total psychrophilic aerobic bacteria (TPAB) coliform, E. coli, Enterobacteriaceae and Salmonella in retail eggs pro-duced in different poultry rearing systems, ii) Enterobacteriaceae species diversity, and iii) antibiotic resistance profile of E. coli isolates. A total of 350 retail eggs produced by four different rearing systems [organic (n= 100), free-range (n= 100), barn (n= 50) and conventional-cage (n=100)] were collected and characterized microbiologically. Out of the 350 eggs tested, the eggshell surface samples were contaminated, with TMAB, TPAB, coliform, E. coli and Enterobac-teriaceae at positive percentages of 100%, 100%, 49.1%, 18.6% and 38%, respectively. The positive percentage of co-liform, E. coli and Enterobacteriaceae were statistically significant between rearing systems (P<0.05). However, only mean numbers of TMAB were statistically significant between rearing systems (P<0.05). The contamination percent positive of crushed eggshell samples, with TMAB, TPAB, coliform, E. coli and Enterobacteriaceae were 100%, 100%, 50%, 33.7% and 42.5%, respectively. Salmonella was detected from only one Enterobacteriaceae isolate obtained from an organic eggshell pool but not from eggshell surfaces or egg yolks. A total of 35 E. coli isolates were recovered from Enterobacteriaceae isolates. Twelve (34.3%) of them exhibited resistance to at least one antibiotic tested. The dominant type of resistance was to ampicillin detected in all 12 E. coli isolates. This study provides valuable baseline data of the occurrence of species diversity of Enterobacteriaceae and antibiotic resistant E. coli in retail eggs produced by alterna-tive or conventional-caged rearing methods which can be used for future risk assessments.
Açıklama
Anahtar Kelimeler
Retail egg, Rearing system, Microbial contamination, E, Coli, Antibiotic resistance
Kaynak
Journal of The Hellenic Veterinary Medical Society
WoS Q Değeri
N/A
Scopus Q Değeri
Cilt
74
Sayı
1
Künye
Güran, H. Ş., Esen, S. ve Alali, W. Q. (2023). Microbial and antibiotic resistant E. coli contamination in retail eggs produced by alternative and conventional rearing methods. Journal of the Hellenic Veterinary Medical Society, 74(1), 5155-5164.
