TY  - BOOK
AU  - Heba Mohammed Hassan 
AU  - Kamelia Mahmoud Osman , 
AU  - Mohamed Khalifa Hassan  , 
TI  - Molecular studies on the distribution of associated virulence genes with avian pathogenic Escherichia coli (APEC) / 
PY  - 2013///
CY  - Cairo : 
PB  - Heba Mohammed Hassan  , 
KW  - Avian pathogenic
KW  - Escherichia
KW  - Virulence genes
N1  - Thesis (Ph.D.) - Cairo University - Faculty of Veterinary Medicine - Department of Microbiology; Issued also as CD
N2  - in this study, 90 tested  flocks  were collected from different  sources of poultry ( grandparents and layers and broilers and broiler breeders ) of suspected E. coli septicemia  in Egypt . Based on the obtained results, it was found that the prevalence of E.coli infection   95.6 %. The 86 serotypes were distributed as 16 (18.16%) of serotypes O125:K70, 12 (13.95%) of serotypes O158:K-, 10 (11.62%) of serotypes O44:K74 and O114:K90 each, 9 (10.46%) of untypable isolates, 6 (6.97%) of serotypes O91:K-, 4 (4.48%) O111:K58, O78:K80 and O25:K11, 2 (11.62%) of serotypes O103:K- and O26:K60 and finally the  lowest  percentage 1 (1.16%) were detected in  serotypes O86: K- and O127:K63 Testing of the phynotypic properties of the 86 isolates it was found that all tested E. coli isolates were Congo red positive but with different intensities , the isolates tested were positive in their motility test and haemolysis assay (100%), results showed that the two cell lines MDCK and Vero cells were infected with E. coli
UR  - http://172.23.153.220/th.pdf
ER  -