Characterization of Pasteurella species isolated from lungs of calves with pneumonia.
During routine bacteriological examination of pneumonic calf lungs it was experienced that many Pasteurella multocida-like isolates had a fermentation pattern different from what is generally accepted for P. multocida sensu stricto. Forty-one out of 50 strains selected for further investigation were phenotypically related and formed a group of indole-, mannitol-and sorbitol-negative P. multocida-like strains, which was tentatively designated taxon 13. Deoxyribonucleic acid/deoxyribonucleic acid hybridizations including both ornithine positive and ornithine negative strains of taxon 13 allowed the classification of the former as P. multocida biovar 6 and the latter as V factor independent strains of Haemophilus avium.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D004269:DNA, Bacterial / Q000235:genetics; D008168:Lung / Q000382:microbiology*; D009693:Nucleic Acid Hybridization; D010325:Pasteurella / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D010326:Pasteurella Infections / Q000382:microbiology / Q000662:veterinary*; D010641:Phenotype; D011014:Pneumonia / Q000382:microbiology / Q000662:veterinary*
D004269:DNA, Bacterial