Investigation of Escherichia coli O157 and Listeria monocytogenes presence and antibiotic susceptibility isolated from ruminant feces and feeds in Balikesir province

In this study, which was conducted for the first time in Balıkesir, it purposed to determine existense, virulence factors and antibiotic susceptibility of Escherichia coli O157, is zoonotic ruminant feces feed, pathogen Listeria monocytogenes, causes diseases humans animals, use these results as epidemiological data our province, region country. Feces animal feed samples were analyzed simultaneously order E. O157 L. Monocytogenes according ISO 16654: 2001 / Amd 1: 2017 11290-1. 38 E.coli isolated from a total one hunderd stool samples. 18 monocytogenes 6 50 silage Three isolates faeces taken same farm with sheep feces. could not be 100 All susceptible sulfamethoxazole trimethoprim, tetracycline, streptomycin, meropenem erythromycin. The highest resistance detected against Sulbactam ampicillin. 3 found resistant Gentamicin 7 Tobramycin. 21 erythromycin, 12 intermediate. According PCR fliCH7, Stx1, Stx2, eaeA EhlyA genes, gene 20 isolates. Of isolates, 4 16 calf stx1 5 four also all gene. stx2 dung two dung. Intimin 8 are six faecal intimin enterohaemolysin predominant factor among Epidemiologically, thought main source contamination, recently, contamination continued Balikesir.