Anthelmintic resistance

Internal parasites are a major cause of lost production in livestock.

Parasite-killing drenches are an effective way of controlling parasites, but experts say some New Zealand farmers are using drenches in a way that will lead to drench-resistant parasites. And once present on a farm, parasite resistance to drench is permanent.

To combat this, Wormwise® – an industry initiative aimed at developing a national worm management strategy – was established.

It provides farmers, vets and rural retailers with information and services to manage internal parasites in sheep and beef.

The Trust includes representatives from Agcarm, Beef + Lamb NZ, Ministry for Primary Industries and the New Zealand Veterinary Association.

Wormwise began in 2005 after a national survey of New Zealand sheep and beef farms revealed significant levels of anthelmintic resistance to internal parasites.

For more information, see the Wormwise website.

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