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Fecal shedding in cattle inoculated with escherichia coli O157:H7 and fed corn or wheat distillers' dried grain with solubles

Hallewell, J., Barbieri, L.R., Thomas, J.E., Stanford, K., Mcallister, T.A. (2013). Fecal shedding in cattle inoculated with escherichia coli O157:H7 and fed corn or wheat distillers' dried grain with solubles, 76(1), 114-118. http://dx.doi.org/10.4315/0362-028X.JFP-12-104

Abstract

Feeding corn dried distillers' grain with solubles (DDGS) has been linked to increased fecal shedding of Escherichia coli O157:H7 in cattle. A study was conducted to compare the impact of three diets containing (dry matter basis) 40% corn DDGS, 40% wheat DDGS, or 20% corn and 20% wheat mixed DDGS to a standard barley grain finishing diet on fecal shedding in cattle challenged with a 1010 CFU mixture of four nalidixic acid-resistant E. coli O157:H7 strains. Rectal grab samples (ñ544) were collected over 70 days and screened for E. coli O157:H7 by direct plating and immunomagnetic bead separation. Feeding diets containing DDGS had no effect (P > 0.05) on the intensity or duration of fecal shedding of E. coli O157:H7 compared with the standard barley grain finishing diet. Copyright ©, International Association for Food Protection.

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