Haemonchus

[Junior]

Found Haemonchus in a group of ewes and lambs a month ago - strangely only the ewes seemed to be affected.
Wormed all ewes and lambs with Noromectin immediately and the ewes are improving. Now unsurprisingly the lambs are showing signs of anemia (3 on FAMACHA) so I’m getting them in in the morning to worm lambs with another clear drench, originally I was also planning on worming the leanest ewes again but am now wondering whether to inject the ewes with Cydectin in the hope they will help reduce the overall burden. (Not too worried about the long with holding as we are likely to fatten cull ewes post weaning) Interested to hear anyone’s opinion on this - Haemonchus has never really been an issue to us before so I’m a bit green on it. TIA

 

[DanM]

Found Haemonchus in a group of ewes and lambs a month ago - strangely only the ewes seemed to be affected.
Wormed all ewes and lambs with Noromectin immediately and the ewes are improving. Now unsurprisingly the lambs are showing signs of anemia (3 on FAMACHA) so I’m getting them in in the morning to worm lambs with another clear drench, originally I was also planning on worming the leanest ewes again but am now wondering whether to inject the ewes with Cydectin in the hope they will help reduce the overall burden. (Not too worried about the long with holding as we are likely to fatten cull ewes post weaning) Interested to hear anyone’s opinion on this - Haemonchus has never really been an issue to us before so I’m a bit green on it. TIA

You can use flukiver if they don’t have a worm burden, else you’ll just be increasing selection for resistance. Clear drench is clear drench, just different brands.

 

[Frank-the-Wool]

It is very unusual to have Haemonchus at this time of the year.
Where are you and what have the ewes been grazing on.
It is an issue of climate change.
Who diagnosed the Haemonchus?

It will always be the young ewes that show symptoms as older ewes tend to get resistance.

 

[Tim W]

It is very unusual to have Haemonchus at this time of the year.
Where are you and what have the ewes been grazing on.
It is an issue of climate change.
Who diagnosed the Haemonchus?

It will always be the young ewes that show symptoms as older ewes tend to get resistance.

Had it here in one group of twins already ----mob counts from 120 to 6000EPG in 10 days
Some individuals with 24000 EPG---which demonstrates how fast they multiply

 

[Frank-the-Wool]

Had it here in one group of twins already ----mob counts from 120 to 6000EPG in 10 days
Some individuals with 24000 EPG---which demonstrates how fast they multiply

Very interesting to see such a massive increase at this time of the year.
The weather conditions have not been typical for that sort of increase..
Usually it is following extreme dry periods and then the wet causes a massive increase in the worm burden.
This situation is almost the reverse and is a major concern.

The OP doesn't say where they live.

 

[livestock 1]

Zolvix

 

[pgk]

It is very unusual to have Haemonchus at this time of the year.
Where are you and what have the ewes been grazing on.
It is an issue of climate change.
Who diagnosed the Haemonchus?

It will always be the young ewes that show symptoms as older ewes tend to get resistance.

A few years ago we suffered an early outbreak in the ewes, turned out was caused by not having fluked the ewes the previous winters with flukiver, as no fluke detected in fec, vet advised the flukiver also deals with the dormant haemonchous. Lesson learned.

 

[sheepdogtrail]

Had it here in one group of twins already ----mob counts from 120 to 6000EPG in 10 days
Some individuals with 24000 EPG---which demonstrates how fast they multiply

It can happen in 24 hours. How are you running the fecals?

 

[sheepdogtrail]

Anyone using a AI tool to do the counting? If so, how good is the AI model?

 

[Tim W]

Very interesting to see such a massive increase at this time of the year.
The weather conditions have not been typical for that sort of increase..
Usually it is following extreme dry periods and then the wet causes a massive increase in the worm burden.
This situation is almost the reverse and is a major concern.

The OP doesn't say where they live.

Yes---we usually see it later in the season ,typically July/August

 

[Troward]

Very interesting to see such a massive increase at this time of the year.
The weather conditions have not been typical for that sort of increase..
Usually it is following extreme dry periods and then the wet causes a massive increase in the worm burden.
This situation is almost the reverse and is a major concern.

The OP doesn't say where they live.

Last year's wet weather caused continuous, repeated outbreaks in our lambs. The ewes also had an outbreak this early in the year. Checking mine today as a few people have mentioned it.

It is a worm that seems to continually adapt, and whilst it first appeared here after a prolonged drought, that doesn't seem to ring true anymore

 

[Frank-the-Wool]

Last year's wet weather caused continuous, repeated outbreaks in our lambs. The ewes also had an outbreak this early in the year. Checking mine today as a few people have mentioned it.

It is a worm that seems to continually adapt, and whilst it first appeared here after a prolonged drought, that doesn't seem to ring true anymore

Is it still a southern and eastern problem?
I wish people would put there approximate location on.

If it becomes a more regular issue then it is likely the ewes will not suffer too much but lambs will need careful monitoring. The ewes will build some resistance.

Zolvix is an expensive fix when probably Flukiver will do the same job.

 

[neilo]

Is it still a southern and eastern problem?
I wish people would put there approximate location on.

If it becomes a more regular issue then it is likely the ewes will not suffer too much but lambs will need careful monitoring. The ewes will build some resistance.

Zolvix is an expensive fix when probably Flukiver will do the same job.

Flukiver is also said to give a bit of residual activity too, as well as not accelerating wormer resistance (until we see Flukiver resistant heamonchus...).

Certainly not just a South and East thing any longer. We've seen it here (mid-Wales border), as have plenty of others in our vet practice, and I seem to remember @hendrebc posting that he had it there (further North/wetter in Wales) too.

 

[hendrebc]

Flukiver is also said to give a bit of residual activity too, as well as not accelerating wormer resistance (until we see Flukiver resistant heamonchus...).

Certainly not just a South and East thing any longer. We've seen it here (mid-Wales border), as have plenty of others in our vet practice, and I seem to remember @hendrebc posting that he had it there (further North/wetter in Wales) too.

Absolute pansy of a thing. Had it for a few years now slowly getting my head around it. Lost a shearling ewe to what I'm pretty sure was haemonchus the other day. The rest were all OK but she was textbook haemonchus symptoms.
I think a lot more have it but don't know and clear it out once a year dosing for fluke.

 

[Tim W]

It can happen in 24 hours. How are you running the fecals?

I do my own FEC on a regular basis
And I can map FEC rise in different fields since 209 which gives me advance warning of what's likely to happen

 

[Anymulewilldo]

Is it still a southern and eastern problem?
I wish people would put there approximate location on.

If it becomes a more regular issue then it is likely the ewes will not suffer too much but lambs will need careful monitoring. The ewes will build some resistance.

Zolvix is an expensive fix when probably Flukiver will do the same job.

No, it made it here 2 autumns back. Christ alive it made a mess. Lost double figures in the weaned lambs at one keep farm for 4 days before we worked out what was happening. I though it was poisoning of some description. We now dose with Flukiver to control it. Tried having another go last autumn and rose its head in the ewes in the early spring. Vet said when it arrived that it’s here to stay now, learn to live with it

 

[Hummin-Cummins]

Dont pi$$ about the same as i did in the past, get a closantel based drench into them quick sharp and if possible shut them in the shed for 10 days. We tried zolvix - didn’t work fec was still over 10000 10 days later.

 

[sheepdogtrail]

I do my own FEC on a regular basis
And I can map FEC rise in different fields since 209 which gives me advance warning of what's likely to happen

Are you collecting the raw data from the FEC's and using that information to generate maps along a time line? Or something else.

Just curious if you have tried changing pasture forage genetics to see if that can offer you any advantage. I find that the follows grass plants are parasite hotels that offer frequent raves for its guest.

1. Yorkshire Fog
2. Annual Blue Grass
3. Cheat Grass
4. Reed Canary Grass
5. Red Top & Brown Top Grass

vs some grasses that are more upright and open in their growth habits and have a little distance (+5") between the base of the plant and its more desirable bites.

 

[ISCO]

Sure we had it last August in 2 batches of ewes on rented grazing. After weaning they melted and started dying. We did take a couple for PM but never got a result as vet had a backlog of carcases in the hot weather and did not get to them in time.
FECS were high so wormed them with clear drench and they were transformed. Keeping a close eye on them this year.
Vet said a double dose of white wormer kills it , has anyone tried this?

 

[Troward]

Sure we had it last August in 2 batches of ewes on rented grazing. After weaning they melted and started dying. We did take a couple for PM but never got a result as vet had a backlog of carcases in the hot weather and did not get to them in time.
FECS were high so wormed them with clear drench and they were transformed. Keeping a close eye on them this year.
Vet said a double dose of white wormer kills it , has anyone tried this?

I don't think it needs to be a double dose, but yes, white wormer works here (actually, all wormers work here for Haemonchus except cydectin). I wouldn't count on it working everywhere though as it is good at gaining resistance.