title: The usefulness of the API 20 E classification system in the identification of Actinobacillus actinomycetem comitans, Actinobacillus seminis and Pasteurella haemolytica.
abstract: The prepuces of lambs aged 6--8 months and semen of 2 adult rams were found to be infected with gram negative, non-motile, non-haemolytic, pleomorphic bacilli. These organisms were compared with those of known strains of actinobacillus actinomycetem comitans. Actinobacillus seminis and Pasteurella haemolytica, using the API 20 E classification system. Applying the principles of numerical taxonomy, the majority of suspected strains of A. seminis could be classified as A. actinomycetem comitans and 3 examples as Histophilus ovis. Although some of the suspected strains of A. seminis could be classified as P. haemolytica, obvious differences between the genera Actinobacillus and Pasteurella were evident.
mesh_terms: D000188:Actinobacillus / Q000145:classification*; D000189:Actinobacillus Infections / Q000382:microbiology / Q000662:veterinary*; D000818:Animals; D001431:Bacteriological Techniques; D008297:Male; D010325:Pasteurella / Q000145:classification*; D010326:Pasteurella Infections / Q000382:microbiology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*