Search results

… Drench resistance is evolution in action (remember Darwin?). Here we examine the risk factors for developing drench resistance on your farm. We also show you what you can do to assess your own situation. … 'Drench resistance' is present on a farm when there are a measurable number of worms surviving in the animals after treatment with anthelmintics. You can …

… that can reproduce without being exposed to drenching.  Keeping a population (or refuge) of drench-susceptible worms on the farm can slow the build-up of parasites resistant (R) to drenches.   Without some worms in Refugia, drench-resistant (R) worms carry on breeding, while their susceptible (S) mates are killed. Resistant parent worms pass on their resistant genes to their … dominant in the population and eventually, drenches fail to work.  Because we still want our drenches to be effective for the stock that need them most, refugia is an important piece of any worm management plan.  … Ideas for creating …

Sheep mating management …