Nematodirus Warning
Recent cold nights and warm days have led to SCOPS forecasting for moderate risk of Nematodirus hatch in some parts of Northern Scotland.
°Õ³ó±ðÌýÌýshows several weather stations reaching moderate risk levels, meaning hatching is expected to occur in the next 7-24 days.
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Suggested advice is as follows:
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Work out the risk for individual groups of lambs:
- Are they old enough to be grazing significant amounts (usually 6 weeks plus)?
- Are they grazing fields that were grazed by lambs last spring?
- South facing fields will hatch earlier
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Take action:
- Move at risk lambs to pasture not grazed by lambs last spring
- Do not rely on worm egg counts to diagnose – intestinal damage and lamb deaths can occur before the infection becomes patent
- Resistance to benzimidazoles has been reported so check efficacy with faecal egg counts 7 to 10 days post treatment
- Do not assume all scouring lambs/deaths at this time of year are due to Nematodirus – investigate for concurrent disease such as coccidiosis
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For further updates and risk level specific to your local area,Ìý.
Posted by Veterinary Services on 01/04/2020
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