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Egg-yolk antibodies induced by immunizing hens with selected Escherichia coli antigens were evaluated for their ability to protect broiler chickens against respiratory/septicemic disease caused by avian pathogenic E. coli (APEC). Seven groups of broiler breeder hens were vaccinated three times, 1 week apart with live E. coli, killed E. coli, E. coli antigens [lipopolysaccharide (LPS), type 1 pilus...
The FimH subunit of type 1 pili mediates adhesion of Escherichia coli to epithelium in different animal hosts. In this study, we sequenced and analyzed the fimH genes of 24 E. coli strains from bovine and porcine clinical cases. The obtained sequences were compared among each other and also with 24 known fimH sequences from avian E. coli strains. This comparison revealed a substantial homology (>99%)...
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