Longitudinal study on the effect of autogenous vaccine application on the sequence type and virulence profiles of Escherichia coli in broiler breeder flocks.

Abstract excerpt

Colibacillosis is one of the most common problems in the poultry industry. Escherichia coli strains on farms are often genetically diverse and therefore commercial vaccines provide little protection to the flocks. Here, we investigated the effect of the autogenous E. coli vaccines on the prevalence of 84 virulence-associated genes in E. coli isolated from four and five consecutive flocks on two broiler breeder...

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