Geographical Difference in Prevalence of Escherichia coli O157 in Finished Beef Cattle

Authors

  • G. A. Dewell Animal Population Health Institute, Colorado State University, Fort Collins, CO 80523
  • J. R. Ransom Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523
  • K. McCurdy Rocky Mountain Regional Animal Health Lab, Colorado State Department of Agriculture, Denver, CO 80211
  • K. E. Belk Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523
  • J. N. Sofos Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523
  • G. C. Smith Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523
  • M. D. Salman Animal Population Health Institute, Colorado State University, Fort Collins, CO 80523

DOI:

https://doi.org/10.21423/aabppro20035289

Keywords:

Escherichia coli, E. coli, carcass contamination, feedlot, pen prevalence

Abstract

As part of a larger study to measure the feedlot pen prevalence effects of Escherichia coli O157 on carcass contamination, 15 pens of cattle were sampled from 12 different feedlots in three states. Thirty fresh pen floor samples were collected prior to slaughter. Other variables included sex, days on feed, weight, number, pen condition and feedlot geographic location. Fecal samples underwent standard enrichment, immunomagnetic separation and isolation procedures for E. coli 0157.

Cover image of the 36th Conference Proceedings: Holstein cows standing in a row at a fence. One cow has put her head through the fence and is curiously inspecting a pile of hay. Yellow background.

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Published

2003-09-18

Issue

2003

Section

Research Summaries - Beef