[Bactericides against Pasteurella multocida in whole blood, plasma and lung lavage fluid of untreated and immunized young swine and calves].

The investigation of bactericidal effects in the whole blood and plasma of young pigs and calves against Pasteurella multocida has shown that such effects only come into being or are activated during the direct interaction between the host and pasteurellae, with effects being increased in previously immunized animals. The same is true for the antibodies which are detectable by indirect haemagglutination. There is no bactericidal effect in the concentrated lung lavage fluid against pasteurellae.