[Inhibition of fecal shedding of enterohemorrhagic Escherichia coli O157:H7 in cattle fed hay].
D000821:Animal Feed; D000818:Animals; D002417:Cattle / Q000382:microbiology*; D019453:Escherichia coli O157 / Q000302:isolation & purification*; D005243:Feces / Q000382:microbiology*; D008297:Male