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Taenia ovis infection and its control: a Canadian perspective
B D De Wolf1, A S Peregrine, A Jones-Bitton
1a Department of Population Medicine , Ontario Veterinary College, University of Guelph , Guelph , Ontario N1G 2W1 , Canada.
New Zealand Veterinary Journal
|September 24, 2013
Summary
New Zealand
Area of Science:
- Veterinary parasitology
- Sheep industry health
- Zoonotic disease control
Background:
- Taenia ovis (T. ovis) infection causes sheep carcass condemnations globally.
- The parasite lifecycle involves dogs (definitive host) and sheep/goats (intermediate host).
- An effective vaccine exists but is not commercially available.
Purpose of the Study:
- To review New Zealand's successful T. ovis control program.
- To discuss adapting this program for Canada's sheep industry.
- To address the rising T. ovis prevalence in Canadian lambs.
Main Methods:
- Review of New Zealand's industry-based, non-regulatory T. ovis control program.
- Analysis of T. ovis epidemiology in Canada.
- Comparison of control strategies for potential Canadian implementation.
Main Results:
- New Zealand's program significantly reduced T. ovis prevalence (1991-2012) through producer education and regular dog treatment.
- Canadian lamb condemnations due to T. ovis surged from 1.5% (2006) to 55% (2012).
- Coyote transmission of T. ovis in Canada is suspected but unconfirmed.
Conclusions:
- New Zealand's T. ovis control model offers a viable strategy for Canada.
- Implementing similar educational and dog treatment programs can mitigate T. ovis in Canadian sheep.
- Further research into potential coyote involvement in Canadian T. ovis transmission is warranted.
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