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Changes in worm control practices on Western Australian sheep farm 1981-2002

Suter, R.J., Bath-Jacobson, C.L.ORCID: 0000-0001-9427-1941 and Besier, R.B. (2005) Changes in worm control practices on Western Australian sheep farm 1981-2002. In: 6th International Sheep Veterinary Congress, 17 - 21 June, Crete, Greece

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Surveys to assess the use of agricultural practices provide "point-in-time" snapshots of what farmers do on their farms. The results can then be compared across regions or over time. Often, comparisons over time allow an assessment to be made about the efficacy of extension campaigns to change such practices.

Gastro-intestinal nematodiasis is a serious production-limiting disease affecting Australian sheep and is further complicated by the widespread occurrence of anthelmintic resistance (1). Awareness of anthelmintic resistance has driven extension efforts to modify the worm control practices employed by farmers.

Surveys in the 1980's in Western Australia, estimated worm control practices and showed high levels of benzimidazole and levamisole resistance (3, 4). These findings initiated the "CRACK" campaign, which aimed to limit anthelmintic resistance. With the rising prevalence of ivermectin resistance detected in the 1990's, an extension campaign to modify summer drenching practices was commenced early in 2001-2002.

This paper compares five surveys of worm control practices conducted between 1981 and 2002 and discusses the changes against the extension campaigns waged.

Item Type: Conference Paper
Murdoch Affiliation(s): School of Veterinary and Biomedical Sciences
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