Reinecke, R.K.Bigalke, R.D.Cameron, Colin McKenzieVerster, Anna J.M.Walker, Jane B.De Kock, V.E.2016-07-062016-07-0620161974Reinecke, RK 1974, 'Studies on Haemonchus contortus. I. The influence of previous exposure to Trichostrongylus axei on infestation with H. contortus’, Onderstepoort Journal of Veterinary Research, vol. 41, no. 4, pp. 213-215.0330-2465http://hdl.handle.net/2263/53827The 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 group of Merino sheep, aged 6-7 months was infested orally with 50 000 infective larvae of Trichostrongylus axei. This group and a control group were challenged 90-92 days later with 50 000 infective larvae of Haemonchus contorus. Previous infestation with T. axei caused a reduction of more than 80% in the worm burdens of H. contorus in more than 80% of the sheep.en©1974 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