Effect of booster vaccination with a multivalent clostridial bacterin-toxoid on sudden death syndrome mortality rate among feedlot cattle.
J Am Vet Med Assoc
; 211(6): 749-53, 1997 Sep 15.
Article
in En
| MEDLINE
| ID: mdl-9301747
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 speticum, 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 bacterintoxoid; 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 > or = 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.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Toxoids
/
Bacterial Vaccines
/
Cattle Diseases
/
Immunization, Secondary
/
Clostridium
/
Clostridium Infections
/
Death, Sudden
Type of study:
Etiology_studies
/
Guideline
Limits:
Animals
Country/Region as subject:
America do norte
Language:
En
Journal:
J Am Vet Med Assoc
Year:
1997
Document type:
Article
Affiliation country: