Abstract
Rabbits and guinea pigs are used in the official control and validation of clostridial vaccines, but it is unknown whether the antitoxin titers obtained in these animals corroborate with the humoral response in bovine. The objective of the study was to compare the humoral antibody response of guinea pig and rabbits to those obtained in cattle vaccinated with a commercial vaccine containing Clostridium perfringens epsilon and beta, and Clostridium botulinum types C and D toxoids. This study revealed the same level of humoral response in rabbits and cattle for all four toxoids tested, including C. botulinum types C and D toxoids. In contrast, the titers of neutralizing antibodies against C. botulinum type C toxin in guinea pigs differed from those obtained in cattle. Thus, the present work suggests that the potency test for C. botulinum types C in rabbits agrees more with the humoral response in cattle than the potency test in guinea pigs, thereby making it possible to use only rabbits as models in the official control and validations of clostridial vaccines.
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