Equest pramox and worm counts

cobzjigg

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wormed two yearling with equest pramox at first frost end of December. Worm counts in spring one was medium risk of red worm and the other is in the thousands 🤦‍♀️😳
Has anyone any insight into why this happened?
They were given correct dose and the lower reading horse passed a lot of worms after the pramox was given
 

Fieldlife

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Worm burden in your grazing so they ingested a new infestation?

They didn’t get a full dose of wormer for their weight / spat some out.

Some strange resistance going on?

Youngsters are I think more prone to worm burdens.
 

cobzjigg

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Thanks
Yes you could be right there with worm burden in a certain field as the low worm count horse was moved to a different field a few weeks later.
And yes I was thinking there could be some resistance going on with the other horse as he passed no visible worms
 

MissTyc

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Very common in young horses - they can pick up a worm burden real quick esp if there are any environmental changes, stressors, or health challenges of any type at all. The relationship between actual burden (per pm) and shedding (per fec) is also worth reading up on as it's not a perfect positive correlation by far. Immune system, pre-existing gut damage, resistant worms, lack of refugarium due to old fashioned grazing practices. They all play their part. Did you do a resistance test at the time of the winter wormer? I'd always recommend doing this if at all possible as it's surprising how many horses somehow escape their full and proper dose at one or another time. They should be 0 two weeks post-worming. If not, they get a second dose.
 

sideshow

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Pramox allegedly keeps horses “egg free” for 13 weeks. Young horses in particular, quickly get re-infested and it seems like a never ending cycle.

They need exposure to parasites so they can develop their own immunity against them
 

dorsetladette

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Pramox allegedly keeps horses “egg free” for 13 weeks. Young horses in particular, quickly get re-infested and it seems like a never ending cycle.

They need exposure to parasites so they can develop their own immunity against them


Hi @sideshow welcome to the forum - I see you have been a member a while but only started to comment of threads recently. Do you have specific interest in parasites and worms/worming?
 
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