De Waal, D.T.Potgieter, F.T.Bigalke, R.D.2014-11-172014-11-1720141987De Waal, DT & Potgieter, FT 1987, 'The transstadial transmission of Babesia caballi by Rhipicephalus evertsi evertsi’, Onderstepoort Journal of Veterinary Research, vol. 54, no. 4, pp. 655-656.0330-2465http://hdl.handle.net/2263/42592The 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.Rhipicephalus evertsi evertsi larvae were fed on the ears of rabbits. Seven days after larval infestation, unfed, newly moulted nymphae were manually removed to infest a splenectomized donkey showing a patent Babesia caballi infection. Engorged nymphae were collected from the donkey and the ensuing adult ticks were placed on a susceptible horse. The horse contracted a B. caballi infection showing a prepatent period of 19 days after tick infestation. A very low parasitaemia, (highest score 2), which was patent for only 10 days, was recorded. The lowest packed cell volume recorded was 16 %.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