Effect of booster vaccination with a multivalent clostridial bacterin-toxoid on sudden death syndrome mortality rate among feedlot cattle

Bradley D. De Groot, Catherine E. Dewey, D. Dee Griffin, Louis J. Perino, Rodney A. Moxley, G. Le Roy Hahn

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Objective - To determine whether booster vaccination with a multivalent clostridial bacterin-toxoid would affect the sudden death syndrome (SDS) mortality rate among feedlot cattle. Design - Field trial. Animals - 83,115 cattle at a Nebraska feedlot. Procedure - Cattle arriving at the feedlot underwent routine processing according to established protocol. All cattle received a sequentially numbered ear tag and a 2-ml dose of a multivalent bacterin-toxoid designed to protect cattle against Clostridium chauvoei, C septicum, C novyi, C sordellii, and C perfringens types C and D. Approximately 90 days prior to slaughter, growth promotants were implanted in all cattle, and cattle were allocated to a treatment or control group on the basis of the last digits of their ear tag numbers. Cattle in the treatment group received a second 2-ml dose of clostridial bacterin-toxoid; control cattle did not. Results - Significant differences between groups in regard to crude, feeding pen, or SDS mortality rates were not detected. Sudden death syndrome mortality rate across both groups was 0.24%. If the SDS mortality rate in midwestern feedlot cattle was reduced ≥ 40% by booster vaccination with a multivalent clostridial bacterin-toxoid, this experiment included enough animals to have a 90% probability of detecting that difference. Clinical Implications - Booster vaccination with a multivalent clostridial bacterin-toxoid does not affect SDS mortality rate among feedlot cattle.

Original languageEnglish (US)
Pages (from-to)749-753
Number of pages5
JournalJournal of the American Veterinary Medical Association
Volume211
Issue number6
StatePublished - Sep 15 1997

ASJC Scopus subject areas

  • veterinary(all)

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