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Effect of cattle diet on Escherichia coli O157:H7 acid resistance
C J Hovde1, P R Austin, K A Cloud
1Department of Microbiology, Molecular Biology, and Biochemistry, University of Idaho, Moscow, Idaho 83844, USA.
Applied and Environmental Microbiology
|July 2, 1999
Abstract:
The duration of shedding of Escherichia coli O157 isolates by hay-fed and grain-fed steers experimentally inoculated with E. coli O157:H7 was compared, as well as the acid resistance of the bacteria. The hay-fed animals shed E. coli O157 longer than the grain-fed animals, and irrespective of diet, these bacteria were equally acid resistant. Feeding cattle hay may increase human infections with E. coli O157:H7.