Diseases of sheep and associated biosecurity strategiesDisease | Summary of flock biosecurity strategy, in order of the most reliable option for purchase into clean flocks |
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Maedi Visna | - Purchase from accredited flocks.
- Quarantine and test immediately.
- Repeat test in 6 months before release from quarantine.
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Enzootic Abortion of Ewes (EAE) | - Purchase from accredited flocks.
- Avoid buying pregnant or maiden ewes.
- Buy in foster lambs from known sources.
- Quarantine and blood test bought in sheep.
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Sheep scab | - Keep in quarantine for 14 days
- Treat with suitable product
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Scrapie | - Buy in tups of known genetic resistance from NSP flocks only
- Blood test bought in replacement ewes and gimmers for PrP genotype unless their status is already established.
- Ensure seller's flock is free from disease.
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Caseous Lymphadenitis (CLA) | - Clinical check for lumps in skin.
- Ensure as far as possible seller's flock is free from disease.
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Contagious Ovine Digital Dermatitis | - Quarantine and observe.
- Check feet after 7 and 14 days.
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Jaagsiekte | - Ensure as far as possible seller's is flock free of disease.
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Orf | - Clinical check of lamb faces, mouths, feet.
- Clinical check of ewe udders, inner thighs.
- Clinical check of ram's poll.
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Border Disease | - Quarantine for 14 days and blood test for persistent excretors.
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Johne's Disease | - Ensure as far as possible seller's is flock free of disease.
- Blood test (not wholly reliable).
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Foot rot | - Quarantine and observe.
- Check feet after 7 and 14 days.
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