Thorburn, J.A.Du Toit, P.J.Union of South Africa. Dept. of Agriculture2015-07-132015-07-1320151934Thorburn JA 1934, 'Chase Valley Disease. Cestrum laevigatum Schlecht, its toxic effects on ruminants', Onderstepoort Journal of Veterinary Science and Animal Industry, vol. 2, no. 2, pp. 667-679.http://hdl.handle.net/2263/48359The 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.In this paper the symptoms and lesions of an acute plant poisoning occurring near Pietermaritzburg, Natal, are described. The cause was found to be the green leaves and berries of the inkberry plant, Cestrum Laevigatum Schlecht. The plant was found to be in the toxic stage in the months of June and July. Only cattle are affected under natural conditions and the poisoning is usually very acute in type. Symptoms of acute abdominal pain are noticed and the animal may become aggressive. Inco-ordination of movements and staggering gait are seen and all the general symptoms of an acute poisoning. Post mortem, epicardial, endocardial and myocardial haemorrhages are observed. Marked congestion of the liver and spleen are usually noticed and the caecum is usually filled with blood. Treatment is symptomatic.en©Union of South Africa, Dept. of Agriculture (original). ©University of Pretoria, Dept. of Library Services (digital).Veterinary medicineSouth AfricaVeterinary reportsInkberry plantVeterinary medicine -- South AfricaRuminants -- DiseasesArticle