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1. True or false? Rotating drenches (using a different drench group each time) will prevent drench resistance.
2. What 3 factors affect the risk of breech strike?
3. When using a dip to treat sheep for lice, what is reinforcement?
False. Rotating drenches is a common strategy, but has only a minor effect on slowing the development of drench resistance, even when combined with paddock rotations.
However, using the following three strategies together has a large impact, and will greatly slow the development of drench resistance:
There are three major factors contributing to the risk of breech strike.
Reinforcement replaces the insecticide removed from the dip wash by stripping. It involves the regular addition of insecticide product, but not water, to the dip.