Effect of cattle diet on Escherichia coli O157:H7 acid resistance.
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.
Hovde
C J
CJ
Department of Microbiology, Molecular Biology, and Biochemistry, University of Idaho, Moscow, Idaho 83844, USA.
Austin
P R
PR
Cloud
K A
KA
Williams
C J
CJ
Hunt
C W
CW
D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000382:microbiology*; D018592:Cross-Over Studies; D002523:Edible Grain; D004927:Escherichia coli Infections / Q000382:microbiology / Q000635:transmission; D019453:Escherichia coli O157 / Q000502:physiology*; D005243:Feces / Q000382:microbiology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006109:Poaceae