Liver fluke control on sheep farms in Northern Ireland: A survey of changing management practices in relation to disease prevalence and perceived triclabendazole resistance

Veterinary Parasitology
C McMahonI Fairweather

Abstract

Reports of resistance to triclabendazole (TCBZ) among fluke populations have increased in recent years. Allied to this, there has been a rise in the prevalence of the disease, which has been linked to climate change. Results from questionnaire surveys conducted in Northern Ireland (NI) in 2005 (covering the years 1999-2004) and 2011 (covering the years 2008-2011) have provided an opportunity to examine the extent to which fluke control practices have changed over a prolonged time-frame, in light of these changes. A number of differences were highlighted. There was a significant shift away from the use of TCBZ over time, with it being replaced largely by closantel. The timing of treatments had moved earlier in the year, perhaps in response to climate change (and an altered pattern of disease). In relation to the frequency of drug treatments, there were no major changes in the overall pattern of drug treatments between the two survey points, although on both occasions approximately one-third of flock owners gave more than 3 treatments per year to ewes. In lowland areas in 2011, flock owners were rotating drug classes more often (each year and at each treatment) than in 2005, whereas in upland areas, flock owners were rotating les...Continue Reading

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Citations

Apr 7, 2016·Trends in Parasitology·Jane M KelleyTerry W Spithill
Oct 7, 2017·Transboundary and Emerging Diseases·N J BeesleyD J L Williams
Oct 28, 2017·Irish Veterinary Journal·Connor McMahonIan Fairweather
Dec 3, 2020·Parasitology·Annia AlbaSylvie Hurtrez-Boussès
Dec 6, 2020·Research in Veterinary Science·Mar Siles-LucasJavier González-Miguel
Jan 20, 2021·Trends in Parasitology·José Antonio Castro-HermidaMercedes Mezo

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