Fransurrey
Well-Known Member
Suitably Qualified Person - the qualification held by any member of staff which enables them to sell veterinary endecto/ectocides such as wormers, flea/tick products - anything classed as POM-VPS or NFA-VPS.Sqp?
Suitably Qualified Person - the qualification held by any member of staff which enables them to sell veterinary endecto/ectocides such as wormers, flea/tick products - anything classed as POM-VPS or NFA-VPS.Sqp?
I thought, but might be talking nonsense, that they arent treated when totally dormant and encysted, and need to be emerging / active to be treated? Hence why the timing of treatment matters? Else you would just treat once a year and have done with it and weather wouldnt matter.I think the current thinking is actually that they inhibit during the cold weather, then emerge in the spring, so the aim is to treat them before they emerge - ie. before it warms up in the spring.
Dr Nielsen is involved in much research over in the States, but also with organisations worldwide I believe, so his knowledge would be in advance of commonly held practices, which have been based on the historical research that we have had access to.
Even just this specific aspect of all of this shows how imperative it is that we are all able to welcome new knowledge and research and adapt our understanding and practices accordingly. Knowledge is always evolving - yet SV tries to make it seem that it's an absolute and rigid thing which she alone has ownership of.
I thought, but might be talking nonsense, that they arent treated when totally dormant and encysted, and need to be emerging / active to be treated? Hence why the timing of treatment matters? Else you would just treat once a year and have done with it and weather wouldnt matter.
Most common advice is to treat after a few hard frosts?
thanks.Moxidectin (Equest) and fenbendazole (Panacur) in a 5-day course are active against encysted small redworm, but there is widespread resistance to fenbendazole.
The egg reappearance interval with moxidectin is decreasing which suggests resistance is developing to this drug in the active larval stage too, hence why we need to be careful with its use - as with all wormers.
To the best of my knowledge, using figures from 2 years ago (there may have been more studies done since), the efficacy of moxidectin against encysted small redworm was only 50-70%, which means that up to 50% will survive treatment. When first introduced, I believe the efficacy claims were 80%, but this is pulled from my memory only and was also a claim made by the drug company themself, so it may have been a best case scenario figure which hasn't varied as much as it might seem.
Also from 2 years ago, there was a study done in the US which found only an 18% reduction to the earlier stage larvae, and 60% against the later stages and they found that the population of larvae had risen back to the original levels after 5 weeks.
Dr Nielsen pointed out that as horses can tend to harbour several hundred thousands of encysted larvae, one has to ask whether reducing these numbers by a percentage for a few weeks is actually beneficial. It also brings into question the danger of the mass emergence in the spring which we have accepted as a yearly threat, the disease it causes apparently actually being 'extremely rare', especially as the treatment for encysted small redworms appears to have a limited window of impact on only a percentage of the population of encysted larvae.
I think the rationale for treating after a few hard frosts is to try to limit the reinfection rate as worm activity is lower during the cold months, but it could also be so that the treatment for encysted small redworms can coincide with a bot treatment, which definitely IS best done a few weeks after the first frosts have killed off all the adult flies. However, contrary to widespread advice over here in the UK, Dr Nielsen has also said that moxidectin isn't that effective against bots and that ivermectin is better.
Please note: I am only sharing the information I have, and am definitely not trying to advise anyone against following the current accepted best practice for worming which I am inclined to follow myself still. I am simply sharing what I have learned, and being mindful that drug resistance is an increasingly worrying issue, hence being open to new research and knowledge which will lead us to hopefully preserving these drugs' usefulness.
ETA: Nearly all species of small redworm larvae go through an encysted stage in the gut wall in a normal life cycle at all times of the year. Some become dormant for longer during this stage, and those are the ones which are referred to as 'inhibited encysted larvae'.
thanks.
So academically, if you were going to use Pramox, when between now and march would you give it? I was thinking as soon as had two hard frosts. But now a bit unsure?
And far more informative and helpful than SV's dictatorial and often incorrect advice. I have learned more about up to date worming protocol in the last few posts than I have in the last 70 years!What a wonderful place the HH forum is, where these topics can be dissected and discussed by horse owners in a friendly and helpful manner. Unlike SV’s page !
If people want someone to do it, I will. My name has been rightly and wrongly dragged through the mud more than once all over social media, so she can have at it with me, I couldn't care less.Better still, it would be good if someone set up a page called something like
South Coast Vet/NMG - Evidence to the Contrary
But it would have to be run very tightly.
If people want someone to do it, I will. My name has been rightly and wrongly dragged through the mud more than once all over social media, so she can have at it with me, I couldn't care less.
This is my vets recommendationI actually was behind someone trying to buy Pramox on Friday and the SQP was refusing to sell it. She also said it was too early and wouldn't risk her licence by selling it without a prescription. Redworm become encysted predominantly due to temperature (and Nielsen has published a review containing that), but climate change has shifted the temp change, which is why they now recommend between December and February rather than the more vague 'autumn'. On the flip side, moxidectin covers all larval stages, so although you will have more late larval (LL3) cyathostomins that are encysted, the drug should catch all. Presumably the waiting is due to the infective status - activity is lower at cold temperatures, so reinfection from pasture is less likely if you worm during cold weather.
So, I kind of agree with SV on that point, as anthelmintic resistance is as big an issue as anti-microbial, with no new drug classes coming on board to replace the ineffective ones. If there is even a slight possibility of optimal treatment time, we need to stick to it like glue.
The slightest information slip up from the alternative page and SV and cronies would be on it in a frenzy.
yes same, I'm with Westgate and they also said Ivermectin as we had a positive redworm result...so I used Equimax as that was the only Ivermectin based one at our local shop. Also treats Tapeworm which is handy as that came back positive too! Double whammy for me this month!My mare came back with a worm count recently that required worming. I was unsure which wormer to use and there seemed to be much discussion online. The yards vet said equest but this bothered me as I knew she’d need that over winter for encysted red worm. My vet said use an ivermectin based wormer so I went with that. The SQP who I bought it from totally agreed and said def not equest.
It’s confusing when professionals don’t seem to agree!
Hundreds? Really? Remind me, how old is she? And that fitted in with being a vet student and then a full time vet?SV: 'I have backed and produced hundreds of horses and ponies throughout my life... When you’ve produced horses for decades, you don’t need to be a vet to know when a horse is being dramatic/naughty, or when they’ve got an issue that needs looking into.'
Face : palm.
42How old actually is she? Must be mid-late 30s at least if the bio on her (p1ss poor) website is anything to go by?
Which, coincidentally, is the answer to life, the universe and everything
Thank you.