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Dosing ewes after lambing options
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<blockquote data-quote="hendrebc" data-source="post: 7990377" data-attributes="member: 70166"><p>I've had the same as neilo this year with haemonchus knocking the ewes about. Not dosed an adult ewe for years because pooled group FEC always come back at 0-100epg usually zero though and just do the odd one that looks wormy. Trouble is just because the pooled fec is 0 doesn't mean that there aren't wormy ewes in amongst the mob. sheep are individuals after all so even if you do get a sample from 10% of a big mob of sheep it's still a lot you've not tested and any that are really wormy are still shedding a lot of eggs and are not getting dosed. Even if you pick up some of the wormy ones poo it will be diluted by the non wormy ones. Worming the ewes once a year before lambing like we used to do would have cleared out those wormy ewes and they wouldn't be shitting out worm eggs (including the barsteward haemonchus eggs) for the lambs to pick up later. </p><p>I've noticed that we get more worm challenge in the lambs since we stopped drenching ewes. I put that down to the few wormy ewes in the mob shedding eggs constantly. Not the end of the world if you can keep on top of it with regular monitoring of FECs but we do get caught out still. And still think it's a good thing in a way because it's helping to stop drench resistance by not dosing ewes that didn't need it. But really if the ewes didn't have worms anyway what difference would a dose make to resistance <img class="smilie smilie--emoji" loading="lazy" alt="🤷♂️" title="Man shrugging :man_shrugging:" src="https://cdn.jsdelivr.net/joypixels/assets/6.5/png/unicode/64/1f937-2642.png" data-shortname=":man_shrugging:" /> and you'd still catch the wormy ones that need it and there would be no worms to not get killed causing resistance in the ewes that didn't need it. You can't do a FEC on all the ewes to find the ones that need it....</p><p>The worst thing about not drenching ewes here is its allowed haemonchus to get a foothold becauseit could keep ticking over in the ewes all winter. I didn't know we had it here till a few weeks ago but something has been niggling for years that I couldn't put my finger on it all makes sense now (lots of things thet have happened with the sheep last few years make sense now I know about haemonchus) and looking back it's all started about the time I stopped worming ewes every year... if you don't have haemonchus on farm not drenching ewes is probably good advice to help stop drench resistance but if you do I think you will need to break uts life cycle at some point every year. </p><p>I'll have to drench more now to keep on top of it so long term not drenching adult ewes has been lose lose here. If only I'd known about haemonchus when I started everything you read says its only in the south of England don't worry <img class="smilie smilie--emoji" loading="lazy" alt="🙄" title="Face with rolling eyes :rolling_eyes:" src="https://cdn.jsdelivr.net/joypixels/assets/6.5/png/unicode/64/1f644.png" data-shortname=":rolling_eyes:" /></p><p>Don't have any drench resistance though even to white wormers and that was used quite heavily for years before I was about. Not sure how not worming adult ewes has helped wurh that but I hope it has or I've got haemonchus for no reason. </p><p>Need lots more cattle.</p></blockquote><p></p>
[QUOTE="hendrebc, post: 7990377, member: 70166"] I've had the same as neilo this year with haemonchus knocking the ewes about. Not dosed an adult ewe for years because pooled group FEC always come back at 0-100epg usually zero though and just do the odd one that looks wormy. Trouble is just because the pooled fec is 0 doesn't mean that there aren't wormy ewes in amongst the mob. sheep are individuals after all so even if you do get a sample from 10% of a big mob of sheep it's still a lot you've not tested and any that are really wormy are still shedding a lot of eggs and are not getting dosed. Even if you pick up some of the wormy ones poo it will be diluted by the non wormy ones. Worming the ewes once a year before lambing like we used to do would have cleared out those wormy ewes and they wouldn't be shitting out worm eggs (including the barsteward haemonchus eggs) for the lambs to pick up later. I've noticed that we get more worm challenge in the lambs since we stopped drenching ewes. I put that down to the few wormy ewes in the mob shedding eggs constantly. Not the end of the world if you can keep on top of it with regular monitoring of FECs but we do get caught out still. And still think it's a good thing in a way because it's helping to stop drench resistance by not dosing ewes that didn't need it. But really if the ewes didn't have worms anyway what difference would a dose make to resistance 🤷♂️ and you'd still catch the wormy ones that need it and there would be no worms to not get killed causing resistance in the ewes that didn't need it. You can't do a FEC on all the ewes to find the ones that need it.... The worst thing about not drenching ewes here is its allowed haemonchus to get a foothold becauseit could keep ticking over in the ewes all winter. I didn't know we had it here till a few weeks ago but something has been niggling for years that I couldn't put my finger on it all makes sense now (lots of things thet have happened with the sheep last few years make sense now I know about haemonchus) and looking back it's all started about the time I stopped worming ewes every year... if you don't have haemonchus on farm not drenching ewes is probably good advice to help stop drench resistance but if you do I think you will need to break uts life cycle at some point every year. I'll have to drench more now to keep on top of it so long term not drenching adult ewes has been lose lose here. If only I'd known about haemonchus when I started everything you read says its only in the south of England don't worry 🙄 Don't have any drench resistance though even to white wormers and that was used quite heavily for years before I was about. Not sure how not worming adult ewes has helped wurh that but I hope it has or I've got haemonchus for no reason. Need lots more cattle. [/QUOTE]
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