Deliberately drenching sheep with worms has brought some promising results for a Victorian producer. Matt Kelly, Low Footprint Lamb, Croxton East, introduced chemical-naive worms to his maternal shedding composites Nudie breeding operation. Over the span of three years he has been able to change chemical resistance from an original worm population to chemical naive worms, with “ewes going from one drench per year at lamb marking to no drench at all”.
