Abstract
ABSTRACT E. coli is a Gram negative bacterium, although it is normal intestinal inhabitant but some strains due to their virulence genes play a major role in causing diarrhea in birds. In the present study, a total of 150 fecal swabs from (crows, egret wild birds and broiler chicken) collected from Giza, Fayoum city governorates, (50 each). The result showed, that isolation rate of E.coli was reported to be isolated in higher incidence inFayoum governorate from crows, 48%, broiler chicken, 40% and egret wild birds 28% while Giza Governorate in where E.coli was isolated from crows, egret wild birds and broiler chicken ,an incidence of 20%, 12% and 20% respectively. The serogroups of E. coli strains that obtained by serological identification were from crows (O78, O91, O145, O127, O158, O119, O125 and O55), egret bird(O78, O158, O125, O119, O91 and O44) and chicken broiler (O78, O125 and O158). The results of sensitivity test for some E. coli isolates showed that they were highly resistant for to streptomycin (83.4%66.4%and 42.8%) in (crows, egret birds and broiler chicken) respectively. The results of multiplex PCR showed that phoA,virulence gene was detected in all E.coliserogroups while, Stx2, gene was detected in serogroups O78, O91 and O125 in crows only. (hly, eaeA and Stx1) virulence genes were not detected in all tested E. colisergroups. On the other hand aadA1 gene was detected by some E. colistrains (7from crows and 2 from egret).
Highlights
Wild birds is important vectors and reservoirs for fecal pathogens in coastal areas
Isolation rate of E.coli recovered from crows, egret wild birds and chicken broiler feces in different governorates: The isolation rates of E.coli were reported to be higher in Fayoum Governorate in than Giza Governorate were E.coli was isolated from crows, egret wild birds and broiler chicken is an incidence of 20%, 12% and 20% respectively
Serotyping Results of E. coli isolated from crows feces, egret bird feces and chicken broiler feces: The most commonly detected E.coli serogroups isolated were from crows (O78, O91, O145, O127, O158, O119, O125 and O55), egret bird feces (O78, O158, O125, O119, O91 and O44) and chicken broiler (O78, O125 and O158)
Summary
Wild birds is important vectors and reservoirs for fecal pathogens in coastal areas. As vectors of many diseases has taken big interest recently, these birds have migratory behavior causes dissemination of multi- resistant (MR) bacteria throughCorresponding author: Heba Roshdy E-mail address: roshdy2019 @yahoo.com Present address: Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Ministry of Agriculture, P.O. Wild birds is important vectors and reservoirs for fecal pathogens in coastal areas. As vectors of many diseases has taken big interest recently, these birds have migratory behavior causes dissemination of multi- resistant (MR) bacteria through. Corresponding author: Heba Roshdy E-mail address: roshdy2019 @yahoo.com Present address: Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Ministry of Agriculture, P.O. Box 246 – Dokki, 12618 – Giza, Egypt colonized or infected with resistant bacteria (Guenther et al, 2011; Oteo 2018; Arnold et al, 2016). From bad habits of human help in attracted wild birds to garbage, manure, untreated sewage so those birds carry many pathogens like Salmonella enterica E.coli, and Campylobacter spp (Moore et al, 2002; Fogarty et al, 2003; Waldenström et al, 2003) E.coli The importance as that it found in food, and environment it harm animal and human as it is opportunistic bacteria (Benskin et al, 2009; Lisa et al, 2013).
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