Swanepoel, Martha L.Bigalke, R.D.2015-10-192015-10-1920151984Swanepoel, ML 1984, 'A study for the differentiation of Actinobacillus-seminis, A-Actinomycetem-comitans, Histophilus-ovis and Pasteurella-haemolytica', Onderstepoort Journal of Veterinary Research, vol. 51, no. 1, pp. 41-46.0330-2465http://hdl.handle.net/2263/50246The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.By using well-defined techniques under optimum conditions it is possible adequately to define the biochemical characteristics of typical A. seminis strains. A. seminis can be distinguished from Histophilus avis on the latter's distinctive colony morphology, but it cannot be distinguished from Actinobacillus actinomycetemcomitans. These organisms, however, can be differentiated from Pasteurella haemolytica on serological grounds and the latter's greater pathogenicity for mice. It is appreciated, however, that intermediate forms occur which cannot as yet be satisfactorily allocated to any of the above-mentioned genera.en©ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaArticle