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To worming productsWhat exactly is resistance?Resistance is when a greater frequency of individuals in a parasite population, usually affected by a dose or concentration of compound, are no longer affected. Once resistance is present in a worm population, the health, welfare and performance of horses infested with resistant worms will be compromised. For this reason it is essential that your horse is dosed accurately according to bodyweight. Using too low a dose of wormer may speed up the development of resistance. On the other hand, frequent, unnecessary worming may also increase the potential for development of resistance. The key to reducing the likelihood of resistance is choosing the right wormer, then giving it at the correct dose and time. Worm egg counts have an important role in this, as they help you to identify when your horse actually needs to be wormed. Use worm egg counts as part of a SMART worming programme. Resistance
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