Triclabendozole and Fluke

[dunk999]

If there are fluke eggs, there are mature fluke present, so they haven't been killed by the TBZ drench for whatever reason. Not necessarily resistance though, if only a few fluke eggs, but probably is. Could there be a couple that spat the drench out?

There will still be fluke about, as its been so mild, but less likely to have picked any up on 'dry arable land' (which you've now seeded with fluke eggs). If it's dry there, those eggs shouldn't get to mature into infective larvae though, as shouldn't be any mud snails about.

That's my fear I'm fairly fussy when dosing. Any idea how long the eggs survive without snails present to host?
I think hopefully the flukivor should sort things out and next autumn if there is fluke present when I do the fec test I will do a follow up to the tbz to check for resistance.

 

[trewern]

Fasinex
Triclafas
Tribex
Endofluke
Triclacert

Cheers bovine but looks like I might be to late for them what abendozol and closantal (other than flukivor) products are available NOT COMbi I understand that abendozol can't be administered when pregnant so trying to establish how to alternate between closantal and abendozol and have an effective fluke control program in the case of resitsance to TCBZ .only being able to treat adult fluke. also is there a drench form of abendozol rather than underskin injection ?

 

[trewern]

I have to admit I always combo drenched in autumn but after following a lot of advice on tff this year I sampled my ewes to find I only needed to fluke them. So they received triclacert mid October. I have just resampled my flock which are in great condition and the results still show <25 worm count but fluke eggs detected, they have been on winter grazing since 1st November on good dry arable land which only run cattle in summer. They are now away to receive flukivor. Could there be some resistance to tbz in my flock or is it possible with the mild weather that they have been reinfected?

I have to agree with neilo if there are eggs present there are adult fluke so TCBZ was not effective if they were treated mid October 13 weeks and put back to infected pastures post treatment any fluke lavae reinfected sheep immediately on today's timescale it would now make lavae adults able to lay eggs seen in FEC as you suggest you have. I would guess that if there is no resitsance to TCBZ you should have dosed them as you moved them off ti winter grazing to kill any imiture fluke 8 -10 weeks later if at this point you had signs of fluke in FEC it would deffenatly suggest your resistant

On to the next point on how long does a egg last without having a snail host according to scops it only lasts a number of hours. The problem becomes that if 1 egg manages to get In contact with the snail it produces 500 lavae which I turn produce 500 flukes which produce a shite load of eggs and the multiples soon go off the scale resulting in a over burden of fluke. a difficult and costly shedule of treatments including the risk of immediate reinfection and back to square one 6 weeks later with high numbers of adult fluke and the potential to become resistant to other forms of flukicide

 

[MRT]

I have a heap of paperwork to do this evening (including my tax return)

Mrs T can sort that for you leaving more time free for TFF

 

[Old Tip]

Knaker man said he'd been picking loads of dead sheep up due to fluke, folk are gathering for scanning and they are dropping like fly s after being dogged and handled, picked up 80 mule ewes up of one farm last week

 

[Downton_shep]

Knaker man said he'd been picking loads of dead sheep up due to fluke, folk are gathering for scanning and they are dropping like fly s after being dogged and handled, picked up 80 mule ewes up of one farm last week

 

[Bury the Trash]

Mrs T can sort that for you leaving more time free for TFF

Thursday evenings is interpersonal skills training ....

 

[MRT]

Thursday evenings is interpersonal skills training ....

Mrs T is not a miracle worker!

 

[Poorbuthappy]

Thursday evenings is interpersonal skills training ....

Mrs T is not a miracle worker!

 

[bovine]

fluke eggs detected,

Could there be some resistance to tbz in my flock or is it possible with the mild weather that they have been reinfected?

Possible resistance, but fluke eggs can survive in the bile ducts and be found in the faeces in low numbers for many weeks after successful treatment. The Copra-antigen test shows if live fluke remain, but is less available.

Cheers bovine but looks like I might be to late for them what abendozol and closantal (other than flukivor) products are available NOT COMbi

See attachment.

 

[bill.bt]

fec count every month to six weeks has helped me no end with fluke and worm burden problems.my vet tests for worms liver and rumen fluke .I run the ewes in four lots and test each lot.i have a dry farm very steep terrain .my father only fluked the ewes once a year 10 years ago.now its 4 times a year with different fluke drenches.rumen fluke is becoming a bigger problem.by testing you know exactly what the problem is.from my experience I had ewes 3 weeks before lambing where showing chronic liver fluke symptoms.had been drenched 3 weeks before with closantel.when tested had a massive worm burden ,clear of fluke,where anaemic.fec count and make a health plan with your vets.do the same with sheep and cattle.hope it helps.been there had the badge.

 

[Poorbuthappy]

If there are fluke eggs, there are mature fluke present, so they haven't been killed by the TBZ drench for whatever reason. Not necessarily resistance though, if only a few fluke eggs, but probably is. Could there be a couple that spat the drench out?

There will still be fluke about, as its been so mild, but less likely to have picked any up on 'dry arable land' (which you've now seeded with fluke eggs). If it's dry there, those eggs shouldn't get to mature into infective larvae though, as shouldn't be any mud snails about.

Time since mid Oct for reinfection surely? Larvae picked up in October post drenching could now be producing eggs?

 

[dunk999]

Time since mid Oct for reinfection surely? Larvae picked up in October post drenching could now be producing eggs?

That was my first thought reinfection, I have only ever fluked my ewes once a year as a precautionary measure pre fec testing and fluke has never been an issue until I became aware of eggs present in the fec tests. Iam not completely closed as a flock although I have been for only one year now that I have reached my numbers, so not impossible that I have previously bought in infected gimmers

 

[trewern]

Possible resistance, but fluke eggs can survive in the bile ducts and be found in the faeces in low numbers for many weeks after successful treatment. The Copra-antigen test shows if live fluke remain, but is less available.



See attachment.

cheers knew you'd come up trumps that's a bloody good bit of info on that pdf

 

[trewern]

heres one for you what about using copper sulphate to spray effected snail habitats to remove the host intern removing fluke burden and reliance on meds ??? possible solving problem just a thought

 

[Shadow]

heres one for you what about using copper sulphate to spray effected snail habitats to remove the host intern removing fluke burden and reliance on meds ??? possible solving problem just a thought

I'd be interested to know the answer to this too. @bovine any thoughts?

 

[bovine]

mmm, well it works. It's what they used to do in the olden days (even suggests it in some old textbooks). I very much doubt its legal or ok to spray a load of copper sulphate around waterways.

 

[Shadow]

https://books.google.co.uk/books?id...age&q=copper sulphate in watercourses&f=false
Found this after a quick Google but haven't read through the whole thing. It seems it is ok for fish in low dilutions but lethal to molluscs eg shrimp so not any use for near our streamwhich definitely does have freshwater shrimp.