R Plasmids in Pathogenic Enterobacteriaceae from Calves
Pressure for selection of antibiotic resistant bacteria is greater in intensive calf raising than in any other livestock raising operation. The newborn calf is particularly vulnerable to enteric infections because it is often colostrum deprived, transported long distances without food, mixed with calves from other sources and therefore simultaneously stressed and exposed to a variety of pathogenic strains to which it may have no immunity. The crowded nature of the intensive rearing environment further facilitates spread of infection and favors accelerated feco-oral transfer of enteric pathogens in the group.
KeywordsEnteric Pathogen Phage Type Antibiotic Resistant Bacterium Antibiotic Usage Ampicillin Resistance
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- 13.A. H. Linton, J. F. Timoney, and M. Hinton. The ecology of chloramphenicol resistance in Salmonella typhimurium and Escherichia coli in calves. J. Appl. Bact. In Press. (1981).Google Scholar