Open Letter - Sheep industry experts stand together to urge action now

An open letter to all sheep farmers


We would like to bring to your attention advice from the Sustainable Control of Parasites in Sheep (SCOPS) group regarding the use of the two newer wormer groups (4-AD orange (Zolvix™) and 5-SI purple Startect).

Use of these two newer groups has more than doubled in the last three years since their reclassification to POM-VPS. Fears that they would be used too widely when the classification changed have proved to be unfounded, but sheep farmers could still harness their potential more.

Use of these two newer groups has more than doubled in the last three years since their reclassification to POM-VPS. Fears that they would be used too widely when the classification changed have proved to be unfounded, but sheep farmers could still harness their potential more.

Why do we need to act? We would urge more sheep farmers to follow the advice of the SCOPS group and integrate the two newer groups into their worm control programmes now.

These products help lambs to reach their growth potential by removing the build-up of worms that have survived previous treatments and slow the development of resistance to the older three groups of wormers, if they are used in the right way before the older wormer groups become ineffective.

We would encourage all sheep farmers to introduce one of these new groups at only two points in their worm control plan. Firstly, as part of their quarantine treatments for all incoming sheep, and secondly as a one-off treatment for lambs, in the latter part of the grazing season.

When should I incorporate? An effective farm protection (quarantine) treatment is essential to prevent otherwise healthy sheep bringing resistant worms onto the farm. For full details go to https://www.scops.org.uk/internal-parasites/worms/quarantine-treatments/.

To get the most benefit from the treatment for lambs, it is important that it is used in the latter part of the grazing season (as a mid-late season break dose) when a treatment is deemed necessary (ideally following a significant worm egg count).

Why is this best practise? The purpose of this treatment is to remove worms that have survived previous treatments with one or more of the older wormer groups (1-BZ white, 2-LV yellow and 3-ML clear). Removing this build-up of worms left behind in the lambs helps them to reach their growth potential and has the double benefit of helping to slow the development of resistance to the older three groups. All lambs remaining on the farm should be treated, but to avoid the risk selecting for resistance to the newer group 4-AD & 5-SI wormers, it is very important not to “dose and move” lambs to “cleaner” grazing straight away. To avoid this risk simply drench the lambs and return them to the same fields for four or five days before moving them. For more details on mid-late season break dose go to https://www.scops.org.uk/news/5221/sheep-farmers-encouraged-to-use-newer-wormers-as-a-mid-season-lamb-dose-this-summer/.

The mid-late season break dose for lambs and as part of the farm protection (quarantine) treatment are the only generally recommended times to use these newer products. To avoid the risk of resistance developing to the two newer groups they should not be used at other times without detailed advice from your consultant or sheep vet.

Signed on behalf of

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Phil Stocker on behalf of National Sheep Association

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Kevin Harrison on behalf of SCOPS


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Dave Bartley on behalf of Moredun



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Nick Hart on behalf of Sheep Veterinary Society

This letter has been written in partnership with Elanco, makes of Zolvix™.

Zolvix™ 25 mg/ml oral solution for sheep (monepantel). Legal category: POM-VPS in UK

For further information call Elanco Animal Health on +44 (0)1256 353131, write to Elanco Animal Health, Lilly House, Priestley Road, Basingstoke, Hampshire, RG24 9NL CLiK™ EXTRA contains 6% (w/v) dicyclanil. CLiK™ Pour On contains 5% (w/v) dicyclanil. CLiKZiN™ contains 1.25% (w/v) dicyclanil. Legal category: POM-VPS. Information regarding the side effects, precautions, warnings and contraindications can be found in product packaging and leaflets; further information can also be found in the Summary of Product Characteristics. Advice should be sought from the medicine prescriber. CLiK, CLiK EXTRA, CLiKZiN, Elanco and the diagonal bar logo are trademarks of Elanco or its affiliates.

Use medicines responsibly (www.noah.co.uk/responsible).
 

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