Gastrointestinal nematode control practices on lowland sheep farms in Ireland with reference to selection for anthelmintic resistance
2011

Gastrointestinal Nematode Control Practices in Irish Sheep Farms

Sample size: 166 publication Evidence: moderate

Author Information

Author(s): Patten Thomas, Good Barbara, Hanrahan James P, Mulcahy Grace, de Waal Theo

Primary Institution: UCD School of Agriculture, Food Science and Veterinary Medicine, University College Dublin

Hypothesis

What are the parasite control practices and risk factors contributing to anthelmintic resistance among Irish lowland sheep farmers?

Conclusion

There is a need for greater awareness of sustainable anthelmintic use to prevent resistance.

Supporting Evidence

  • 61% of farmers administered four or more treatments to lambs in a normal year.
  • 94% of respondents treated purchased animals with an anthelmintic before mixing them with their flock.
  • 58% of sheep producers indicated they switched anthelmintic class on an annual basis.

Takeaway

Farmers need to be careful about how they treat their sheep for worms, or the worms might become resistant to the medicine.

Methodology

A questionnaire was distributed to 166 lowland Irish sheep producers to gather data on their parasite control practices.

Limitations

Some respondents had fewer than 100 breeding ewes, leading to exclusion from analysis.

Participant Demographics

The majority of respondents had both sheep and cattle enterprises, with a dominant breed of Suffolk.

Digital Object Identifier (DOI)

10.1186/2046-0481-64-4

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