Van de Pypekamp, H.E.Prozesky, L.Bigalke, R.D.2017-11-132017-11-1320171987Van de Pypekamp, HE & Prozesky, L 1987, 'Heartwater. An overview of the clinical signs, susceptibility and differential diagnoses of the disease in domestic ruminants', Onderstepoort Journal of Veterinary Research, vol. 54, no. 3, pp. 263-266.0330-2465http://hdl.handle.net/2263/63131The 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.Heartwater is a frequently fatal tick-borne disease of ruminants caused by Cowdria ruminantium. In domestic ruminants the incubation period varies considerably and depends on the route of infection, virulence of the isolate and amount of infective material administered. Adult cattle of all breeds appear to be equally susceptible to heartwater. It is generally accepted that calves up to the age of 3 weeks have a high degree of natural resistance which is not related to the immune status of the dam. Nervous symptoms are frequently seen in animals affected by the peracute and acute forms of heartwater and can easily be confused with similar signs caused by infectious conditions, toxic plants, acaricide and heavy metal poisonings.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