• Genetic analysis of faecal worm egg count in South African Merinos under natural challenge 

      Cloete, S. W. P. (Schalk Willem Petrus van der Merwe); Olivier, J. J.; Du Toit, E.; Dreyer, F. H. (South African Society for Animal Science, 2007)
      Sheep from a Merino selection experiment at the Tygerhoek research farm in the Southern Cape provided material for this study. The selection lines involved included a line selected for clean fleece weight, a "Wet and Dry" ...