In dairy farms, calves are the animal group that carries the fecal flora with the
highest prevalence of antimicrobial resistance (AMR). Calves' age and
antimicrobial exposure are major factors affecting AMR prevalence. The calves'
housing environment is suspected to be a reservoir of resistant bacteria, acting
as a source of colonization of the calves' gut and maintenance of AMR in farms.
Aims
To describe the prevalence of AMR and multidrug resistance (MDR) in
Escherichia coli isolated from preweaned calves' housing environment in Swiss
dairy farms
To explore factors associated with AMR and MD
