Livestock News

  • Written by: Farmers Guide
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Liver fluke treatment re-introduced

The flukicide drench ZANIL hasbeen re-introduced into Great Britain by MSD Animal Health as a treatmentagainst chronic liver fluke in cattle and sheep.

Based on the active ingredient oxyclozanide,Zanil is highly effective against the adult fluke responsible for chronicdisease and significantly for dairy farmers – is licensed for use in young,pregnant and lactating animals, with a 72-hour milk withhold period where milkis produced for human consumption.

The latest independent data () confirmsthat fluke is on the increase in UK cattle and sheep, says MSD Animal Healthveterinary advisor Matt Haslam. The fluke problem is longstanding, but isbeing exacerbated by recent wet summer and autumn periods that have createdideal conditions for this parasite to proliferate and infect grazing livestock.

Chronic liver fluke causes serious economiclosses for livestock farmers. In dairy herds, for example, there will be anegative impact on fertility and milk production where cows are affected.

It is important that farmers have access tothe best treatment options given the size of the threat and the scale ofpotential losses. Zanil is used widely and effectively in Ireland in thecontrol of fluke problems, and there is no known resistance to the activeingredient oxyclozanide. With its re-introduction into the country, we believeZanil is unique as a flukicide-only treatment that is licensed for use in lactationand in the dry period for the treatment of adult fluke in dairy cows.

Zanil is an oral drench with POM-VPSauthorisation and is available from both animal health suppliers and veterinarypractices. Dosage rate is 3ml per 10kg bodyweight in cattle, up to a maximum of105ml, and 4.5ml per 10kg bodyweight in sheep, up to a maximum of 20ml.


  • Written by: Farmers Guide
  • Posted:
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