ISOLATION AND CHARACTERIZATION OF SOME PREVIOUSLY UNREPORTED TAXA FROM POULTRY WITH PHENOTYPICAL CHARACTERS RELATED TO ACTINOBACILLUS‐ AND PASTEURELLA SPECIES

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Abstract
Cultural, morphologic and biochemical characteristics of previously unreported taxa isolated from poultry and tentatively assigned to genus Actinobacillus were compared to those of A. lignieresii, A. equali, A. seminis, A. suis, avian hemolytic Actinobacillus sp., A. salpingitidis, avian P. haemolytica-like strains, P. haemolytica biovar T, P. ureae, P. multocida, P. pneumotropica, P. gallinarum and P. anatipestifer. Evidence was obtained to indicate that taxon 1-3 was closely related to genus Actinobacillus, but sufficiently different from established species within that genus to constitute new distinct species. Taxon 4 had the cultural and biochemical characters of strains previously described by Clark and Godfrey. Strains designated P. haemolytica-like could not be separated from A. salpingitidis on the basis of phenotypical characters. The final taxonomical position of taxon 1-4 in addition to strains designated avian haemolytic Actinobacillus sp. and P. haemolytica-like has to await further taxonomical investigations including determination of mol % G + C in DNA hybridization and DNA hybridization, for which reason species names have been omitted.