Botha, C.J. (Christoffel Jacobus)Basson, A.T.Bastianello, Stella S.Verwoerd, Daniel Wynand2014-08-182014-08-1820131991Gummow, B, Botha, CJ, Basson, AT & Bastianello, SS 1991, 'Copper toxicity in ruminants : air pollution as a possible cause ’, Onderstepoort Journal of Veterinary Research, vol. 58, no. 1, pp. 33-39.0330-24657006558662O-5991-20147003908833N-9314-2014http://hdl.handle.net/2263/41359The 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.Pathological findings and liver and kidney analyses confirmed that cattle had died of chronic copper poisoning on a farm in the north-eastern Transvaal. This is the first known published record of chronic copper intoxication of cattle in southern Africa. An epidemiological study revealed that a source of copper was air pollution which could have arisen from a nearby copper smelting unit. Buffalo and impala in an adjacent area of the Kruger National Park were found to have significantly higher liver copper levels than animals elsewhere in the Park. Prophylactic licks, containing zinc sulphate and sulphur, seemed to be successful in protecting cattle against the effects of the copper in the contaminated grazingen©South Africa. Dept. of Agricultural Technical Services. ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaArticle