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  • Title: Inflammatory response to clostridial vaccines in feedlot cattle.
    Author: Stokka GL, Edwards AJ, Spire MF, Brandt RT, Smith JE.
    Journal: J Am Vet Med Assoc; 1994 Feb 01; 204(3):415-9. PubMed ID: 8150699.
    Abstract:
    In 24 individually housed feedlot steers that weighed 275 kg, clostridial vaccines were compared for size of injection site reactions, systemic inflammatory response caused by vaccination, and impact on feed consumption. Vaccines were a bacterin/toxoid containing antigens from multiple clostridial species (7-way), and a Clostridium perfringens type C and D toxoid; sterile physiologic saline solution was used as the control. Injection site reactions were observed in all vaccinated cattle. Differences in size of lesions were found, with cattle given the 7-way vaccine (7-way group) having the largest lesions. The inflammatory-response to vaccination, measured by serum concentration of the acute-phase protein haptoglobin, was significantly (P < 0.05) increased in both vaccinated groups over that of controls. However, the 7-way group had higher postinjection values than did the group given type C and D toxoid. The 7-way group had a significant (P < 0.05) 20% decrease in feed consumption in response to the second injection of vaccine. These findings are indicative of potential negative effects of multiple clostridial vaccinations.
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