Study of Vibrio strains isolated from swine

Antigen and biochemical studies were carried out of nine Vibrio strains isolated from pigs, testing their pathogenicity and toxicity for experimental animals. According to their biochemical behaviour six of the strains were shown to belong to type I, three--to subtype I, and on the grounds of their antigenic characteristics six belonged to type I and three--to type II. It was found that the strains producing hydrogen sulfide were more weakly pathogenic and toxic. No substantial differences were found between the strains isolated from miscarrying and normally farrowing sowa originating from pig breeding farms with a record of vibriosis.