Combrink, M.P.De Waal, D.T.Troskie, P.C.Verwoerd, Daniel Wynand2012-12-122012-12-1220121997Combrink, MP, De Waal, DT & Troskie, PC 1997, 'Evaluation of a 3 ml heartwater (cowdriosis) infective blood vaccine dose’. Onderstepoort Journal of Veterinary Research, vol. 64, no. 4, pp. 309-311.0330-2465http://hdl.handle.net/2263/20752The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat X Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.Three milliliters of blood from the present commercially produced heartwater infective blood vaccine (Ball3 stock) was experimentally tested in sheep and cattle for infectivity and efficacy. Results obtained for this vaccine dose were statistically not different from results for the prescribed 5 ml vaccine dose.en© ARC-Onderstepoort (original). © University of Pretoria. Dept of Library Services (digital).Veterinary medicineBloodCattleCowdriosisEfficacyHeartwaterInfectivitySheepVaccineVeterinary medicine -- South AfricaArticle