Rechav, Y.Kostrzewski, M.W.Verwoerd, Daniel Wynand2014-08-182014-08-1820131991Rechav, Y & Kostrzewski, MW 1991, 'The relative resistance of six cattle breeds to the tick Boophilus decoloratus in South Africa’, Onderstepoort Journal of Veterinary Research, vol. 58, no. 3, pp. 181-186.0330-2465http://hdl.handle.net/2263/41393The 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.Adult females of the tick Boophilus decoloratus were removed from 6 breeds of cattle on 2 farms in the Northern Transvaal. Highest numbers of female ticks were collected from Simmentaler, followed by Santa Gertrudis, Bonsmara, Afrikaner, Brahman and Nguni. Resistance levels of each breed to B. decoloratus was positively correlated with the amount of Bos indicus genes in the breed, with the exception of Nguni, which is a sanga type but not pure B. indicus.en©South Africa. Dept. of Agricultural Technical Services. ©University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary medicine -- South AfricaTicks -- South AfricaArticle