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sheep flock

Welcome to the Elanco Sheep Wormer Checker


Sheep wormers are vital for any worm control plan, but over reliance on them in the past has led to the development of anthelmintic-resistant worms.

The Elanco Sheep Wormer Checker will take you step-by-step through the key criteria when considering worm control in your flock


Start

To start, select the group you need to treat:

Incoming sheep (purchased animals or animals returning from away grazing) or

Resident sheep (part of the main flock already on the farm)

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Incoming Sheep

Incoming sheep are all sheep coming onto the farm, including replacement breeding stock, store lambs and animals returning from another pasture. As part of the quarantine protocol, SCOPS recommend:

  • Using a group 4-AD or 5-SI wormer as a Quarantine Dose, as these have the highest efficacy against gastrointestinal roundworms, including resistant worms. Dose with Zolvix™ as a 'Farm Protection' Quarantine Dose
  • Testing for scab and treating if required. Dectomax™ Injection can be used as part of the quarantine protocol.
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    Resident Sheep

    Resident sheep are part of the main flock already on the farm, that have been grazing home pastures. These will therefore be affected by parasites already present on the farm.





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    Adult Sheep (ewes and rams)

    Adult sheep should have immunity to worms and should not require routine worming.

    Sheep that have other health issues such as foot rot or other infections may have a drop in immunity and therefore need worming.

    A Faecal Egg Count can be done if there are concerns about worms in adult sheep. See SCOPS for how to do a FEC.

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    FEC - High Count
    (300-700 epg)

    Dose...Treating these sheep would be appropriate. Ask your prescriber which active to use.


    Then drench check ... Always follow up with a drench check to see how effective this treatment has been. For more information on drench checking to test the efficacy of a treatment, check SCOPS.

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    FEC - Low Count
    (< 300 epg)

    Treating these sheep will provide no clinical benefit.

    There are other reasons why sheep may be in poor condition: take advice from your flock health advisor.

    More information on sheep worms can be found here.

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    Ewes at lambing

    Ewes under nutritional stress at lambing time may need to be wormed. This is more likely if they are carrying multiple lambs, or in poor body condition, or are lame. A Faecal Egg Count (FEC) should be done if there are concerns about ewe health.

    SCOPS recommend only worming the ewes that need worming.

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    FEC - High Count
    (300-700 epg)

    Dose...Treating these sheep would be appropriate. Ask your prescriber which active to use.


    Then drench check ... Always follow up with a drench check to see how effective this treatment has been. For more information on drench checking to test the efficacy of a treatment, check SCOPS.

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    FEC - Low Count
    (< 300 epg)

    Treating these sheep will provide no clinical benefit.

    There are other reasons why sheep may be in poor condition: take advice from your flock health advisor.

    More information on sheep worms can be found here.

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    Lambs

    Lambs have not yet developed immunity to worms, and will be more likely to suffer from a worm burden, so should be monitored regularly and treated as required.

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    Spring

    The first worm that most lambs are exposed to is Nematodirus. Check the SCOPS Nematodirus Forecast to understand the local risk and when to treat.

    Group 1-BZ wormers are the SCOPS recommendation for treating Nematodirus, for example Rycoben™.

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    Summer

    Faecal Egg Counts and/or individual daily live weight gain should be used alongside the SCOPS Nematodirus Forecast to assess the worm burden and determine when lambs need to be treated.

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    FEC - High Count
    (300-700 epg)

    Dose...Treating these sheep would be appropriate. Ask your prescriber which active to use.


    Then drench check ... Always follow up with a drench check to see how effective this treatment has been. For more information on drench checking to test the efficacy of a treatment, check SCOPS.

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    FEC - Low Count
    (< 300 epg)

    Treating these sheep will provide no clinical benefit at this time.

    There are other reasons why sheep may be in poor condition: take advice from your flock health advisor and repeat FEC tests in 2-3 weeks.

    More information on sheep worms can be found here.

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    Post-weaning

    In the latter part of the grazing season, post-weaning, lambs are likely to be carrying some resistant worms left behind by previous treatments. A Faecal Egg Count will confirm the worm burden.

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    FEC - High Count
    (300-700 epg)

    Dose...

    When a high worm egg count is found, treat with Zolvix™ as a break dose to clear out these resistant worms and enable optimum lamb growth.


    Then drench check ... Always follow up with a drench check to see how effective this treatment has been. For more information on drench checking to test the efficacy of a treatment, check SCOPS.

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    FEC - Low Count
    (< 300 epg)

    Treating these sheep will provide no clinical benefit at this time.

    There are other reasons why sheep may be in poor condition: take advice from your flock health advisor and repeat FEC tests in 2-3 weeks.

    More information on sheep worms can be found here.

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    Thank you for using the Elanco Sheep Wormer Checker!

    Find out more about managing gastrointestinal worms in sheep.

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