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Grain feeding and the dissemination of acid-resistant Escherichia coli from cattle | | F Diez-Gonzalez
; T R Callaway
; M G Kizoulis
; J B Russell
; | | Date: |
11 Sep 1998 | | Journal: | Science, 281 (5383), 1666-8 | | Abstract: | The gastric stomach of humans is a barrier to food-borne pathogens, but Escherichia coli can survive at pH 2.0 if it is grown under mildly acidic conditions. Cattle are a natural reservoir for pathogenic E. coli, and cattle fed mostly grain had lower colonic pH and more acid-resistant E. coli than cattle fed only hay. On the basis of numbers and survival after acid shock, cattle that were fed grain had 10(6)-fold more acid-resistant E. coli than cattle fed hay, but a brief period of hay feeding decreased the acid-resistant count substantially. | | Source: | PubMed, pmid9733511 | | Services: | Forum | Review | Favorites | |
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