Application of the ELISA for determination of anti-Pasteurella multocida IgG in the sera of rabbits veccinated against pasteurellosis under field conditions
The ELISA was used to measure the level of specific lgG to P. multocida in the sera of rabbits vaccinated against pasteurellosis on a farm at Ch. The vaccines comprised the antigens of serotypes 3 and 12 with two adjuvants: emulsigen or aluminium hydroxide gel. Eight-week-old rabbits were injected subcutaneously with a 1-ml dose. Animals were observed for about 2 months until slaughter. A statistically significant increase in IgG level was found in rabbits challenged one month after immunisation in comparison to non-vaccinated animals. The increase was maintained without any marked alterations for 2 months. Results indicate that the ELISA may be used to evaluate the vaccine effectiveness instead of experimental injections of animals.