Giesecke, W.H.Van den Heever, Louwrens WepenerDu Toit, I.J.Beyer, Maria C. E.De Lange, M.Bigalke, R.D.Howell, P.G.Reinecke, R.K.Walker, Jane B.De Kock, V.E.2016-07-062016-07-0620161973Giesecke, WH, Van den Heever, LW, Du Toit, IJ & Beyer, MCE 1973, 'The diagnosis of bovine mastitis: a critical evaluation of a polyvalent radial immunodiffusion test and other methods’, Onderstepoort Journal of Veterinary Research, vol. 40, no. 2, pp. 59-67.0330-2465http://hdl.handle.net/2263/53726The articles have been scanned in colour with a HP Scanjet 5590; 300dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.A critically comparative investigation was performed on 228 quarter samples from 26 Friesland-type dairy cows respectively to evaluate the diagnostic value of conventional direct and indirect cytological methods and a single radial immunodiffusion test based on a polyvalent antiserum. Data obtained suggest considerable diagnostic inaccuracies for all the methods tested. The lack of an adequate "mastitis standard" prevented a precise determination of the magnitude of the diagnostic inaccuracies.en© 1973 ARC - Onderstepoort and Faculty of Veterinary Science. University of Pretoria (original). © 2016 University of Pretoria. Department of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaArticle