Vaccination and Direct Fed Microbials as Intervention Strategies for Reduction of E. coli O157:H7 in Feedlot Steers

Authors

• Jeffrey D. Folmer, University of Nebraska-Lincoln
• Casey N. Macken, University of Nebraska-Lincoln
• Galen E. Erickson, University of Nebraska-LincolnFollow
• Terry J. Klopfenstein, University of Nebraska-LincolnFollow
• Rodney A. Moxley, University of Nebraska-LincolnFollow
• David R. Smith, University of Nebraska-LincolnFollow
• Susanne Hinkley, University of Nebraska-Lincoln
• Andrew A. Potter, Vaccine and Infections Disease Organization, Saskatoon, SaskatchewanFollow
• B. Brett Finley, University of British Columbia

Date of this Version

1-1-2004

Comments

Published in 2004 Nebraska Beef Cattle Report. Copyright © 2003 The Board of Regents of the University of Nebraska.

Abstract

A clinical trial was conducted to evaluate effects of two intervention strategies on the prevalence of E. coli O157:H7 shedding by feedlot steers using 384 steers and 48 pens. Intervention strategies were a direct fed microbial or vaccination against E. coli O157:H7. No differences in performance or carcass yield were observed for direct fed microbial or vaccination treatments, compared to the control. Vaccination significantly reduced the prevalence of E. coli O157:H7. In addition, we also observed a non-significant decrease in the prevalence of E. coli O157:H7 with inclusion of the direct fed microbial.