[Metabolism of free amino acid in strains of Pasteurella multocida and their division into biological types].

A total of 29 Pasteurella multocida strains were isolated in cases of atypical fowl cholera with swelling of the wattles as well as from pigs and calves with pneumonia. All strains were used to study the metabolism of 10 amino acids. Glutaminic acid was found to be metabolized by all investigated strains. Arginine was metabolized by Pasteurella organisms isolated from mammals (calves and pigs), and was metabolized by Pasteurellae isolated from birds. By their positive reaction with proline and their negative one with alanine the Pasteurella strains isolated in cases of acute cholera differed from all other Pasteurella organisms. Asparagine was metabolized only by Pasteurellae isolated in cases of atypical fowl cholera, and serine--only by Pasteurellae isolated from pigs.