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BVD

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    #62
    alps
    Registered Users Posts: 4,928 ✭✭✭alps


    greysides wrote: »
    IIRC, BVD was reckoned to be in about 70% of herds based on blood antibodies. Not all of those herds would have had PIs though. You presumably had a TASAH investigation last year, did it identify any possible ways the disease may have arrived?
    Getting rid of PIs promptly is always advisable as they are the biggest source of virus and their presence increases the likelihood another pregnant animal will be infected during the window for creating another PI.
    Herd Immunity will be very small now compared to previously due to lack of exposure of animals to the virus so creating a Trojan dam will be easier if virus is present. So its important to keep calved cows away from unchecked calves, where possible, and have all calves tested before breeding starts. Another option, to put in a firewall, is to vaccinate all breeding stock prior to the season starting. It's not foolproof but it is a good measure of help.
    If your job involves visiting marts or other farms separate outer clothes and disinfection of boots should help. In this day and age it wouldn't be unreasonable to ask all visitors to disinfect.
    Contractors slurry spreaders or muck spreaders are a risk that there's no easy answer to. Maybe have them spread the first few loads on silage ground?
    Buying in heifers in-calf is risky. If unavoidable I'd suggest extra precautions around calving time- calve in isolation and keep separate till the test results are back.
    Anyway, I imagine your vet has had a chat with you already. These are just some random thoughts I had.

    We've never had a PI...

    We've never vaccinated..

    However, we used to sell breeding bulls for many years, and would always blood them for BVD. They would always be antibody positive, virus negative, and because of this we had repeat buyers who looked for this result, in that the bull had a natural immunity.

    Can there be some form of background exposure that challenges stock to build immunity?

    When all PI's have been removed, will there still be some form of background exposure hanging around?

    If so, could that mean that we may never be able to stop tagging and testing?


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    #63
    K.G.
    Moderators, Society & Culture Moderators Posts: 3,037 Mod ✭✭✭✭K.G.


    greysides wrote: »
    IIRC, BVD was reckoned to be in about 70% of herds based on blood antibodies. Not all of those herds would have had PIs though. You presumably had a TASAH investigation last year, did it identify any possible ways the disease may have arrived?
    Getting rid of PIs promptly is always advisable as they are the biggest source of virus and their presence increases the likelihood another pregnant animal will be infected during the window for creating another PI.
    Herd Immunity will be very small now compared to previously due to lack of exposure of animals to the virus so creating a Trojan dam will be easier if virus is present. So its important to keep calved cows away from unchecked calves, where possible, and have all calves tested before breeding starts. Another option, to put in a firewall, is to vaccinate all breeding stock prior to the season starting. It's not foolproof but it is a good measure of help.
    If your job involves visiting marts or other farms separate outer clothes and disinfection of boots should help. In this day and age it wouldn't be unreasonable to ask all visitors to disinfect.
    Contractors slurry spreaders or muck spreaders are a risk that there's no easy answer to. Maybe have them spread the first few loads on silage ground?
    Buying in heifers in-calf is risky. If unavoidable I'd suggest extra precautions around calving time- calve in isolation and keep separate till the test results are back.
    Anyway, I imagine your vet has had a chat with you already. These are just some random thoughts I had.
    ah yeah and as i said a boundsing neighbour had one in 2017 so it is thought its the likely source he had been clear previously.my worry is that we are in the start of a storm but we ll see.is it possible that some other virus triggers the test.i had that before with brucellosis it turned out it brucellosis afterwards but some other virus cant remember how they came to that conclusion


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    #64
    greysides
    Moderators, Society & Culture Moderators, Sports Moderators Posts: 8,971 Mod ✭✭✭✭greysides


    Can there be some form of background exposure that challenges stock to build immunity?

    That would be the presence of the virus. Main source is PIs but it can still circulate among healthy animals while it waits its opportunity to cause a PI.
    That circulation gives the herd immunity.


    When all PI's have been removed, will there still be some form of background exposure hanging around?

    Only for a while it will die out, quite rapidly, unless there's another source such as bought in animals that happen to be carrying it.

    If so, could that mean that we may never be able to stop tagging and testing?

    No, it should soon get to the point where the risk is minimal. Not sure that will be 2020 but it should be soon. Attention then needs to focus on biosecurity.

    Id be reluctant to tell anyone who has been vaccinating to stop just yet.

    The aim of argument, or of discussion, should not be victory, but progress. Joseph Joubert

    The ultimate purpose of debate is not to produce consensus. It's to promote critical thinking.

    Adam Grant



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    #65
    greysides
    Moderators, Society & Culture Moderators, Sports Moderators Posts: 8,971 Mod ✭✭✭✭greysides


    K.G. wrote: »
    ah yeah and as i said a boundsing neighbour had one in 2017 so it is thought its the likely source he had been clear previously.my worry is that we are in the start of a storm but we ll see.is it possible that some other virus triggers the test.i had that before with brucellosis it turned out it brucellosis afterwards but some other virus cant remember how they came to that conclusion

    Ignoring the small degree of error inherent in any test, these tests are extremely specific to the virus. The PCR test which looks for viral genetic material even moreso.

    The aim of argument, or of discussion, should not be victory, but progress. Joseph Joubert

    The ultimate purpose of debate is not to produce consensus. It's to promote critical thinking.

    Adam Grant



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    #66
    Hurling Hereford
    Registered Users Posts: 320 ✭✭Hurling Hereford


    greysides wrote: »
    Ignoring the small degree of error inherent in any test, these tests are extremely specific to the virus. The PCR test which looks for viral genetic material even moreso.

    How many people on Boards.ie are Not testing for BVD at present? :confused:


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    #67
    Buford T. Justice XIX
    Closed Accounts Posts: 20,633 ✭✭✭✭Buford T. Justice XIX


    Hurling Hereford wrote: »
    How many people on Boards.ie are Not testing for BVD at present? :confused:

    Nobody, still mandatory to test every animal born.


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    #68
    liosnagceann75
    Registered Users Posts: 407 ✭✭liosnagceann75


    Takes 12 months to receive compensation when a pi is removed from the herd. Talk about a joke


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    #69
    whelan2
    Registered Users Posts: 29,080 ✭✭✭✭whelan2


    Found a bvd sample the other day in the filter of my washing machine. I'd say it was there since March.


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    #70
    High bike
    Registered Users Posts: 2,279 ✭✭✭High bike


    whelan2 wrote: »
    Found a bvd sample the other day in the filter of my washing machine. I'd say it was there since March.
    Did u give out to her for not checking ur pockets:D


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    #71
    grassroot1
    Registered Users Posts: 1,524 ✭✭✭grassroot1


    whelan2 wrote:
    Found a bvd sample the other day in the filter of my washing machine. I'd say it was there since March.


    Did the department not flag it as not tested?


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    #72
    whelan2
    Registered Users Posts: 29,080 ✭✭✭✭whelan2


    grassroot1 wrote: »
    Did the department not flag it as not tested?

    They did and I searched everywhere for the sample. Had to order another tag for it. I knew it would turn up somewhere


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    #73
    Base price
    Registered Users Posts: 11,134 ✭✭✭✭Base price


    Compulsory testing to continue - https://www.independent.ie/business/farming/agri-business/compulsory-bvd-testing-to-continue-indefinitely-38592902.html


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    #74
    TooOldBoots
    Closed Accounts Posts: 604 ✭✭✭TooOldBoots


    Base price wrote: »
    Compulsory testing to continue - https://www.independent.ie/business/farming/agri-business/compulsory-bvd-testing-to-continue-indefinitely-38592902.html

    This is a pure joke of a scheme, adding more costs to the farmer just to keep a few in gravy


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    #75
    Gods Gift
    Banned (with Prison Access) Posts: 3,713 ✭✭✭Gods Gift


    What’s the story with empties.
    I’ve had 12 this year. Defo doing it right.


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    #76
    whelan2
    Registered Users Posts: 29,080 ✭✭✭✭whelan2


    Gods Gift wrote: »
    What’s the story with empties.
    I’ve had 12 this year. Defo doing it right.

    Are they cormac or mullinahone? I only had 1 empty all year, out of about 180. Which was last week, I'm with mullinahone


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    #77
    Buford T. Justice XIX
    Closed Accounts Posts: 20,633 ✭✭✭✭Buford T. Justice XIX


    whelan2 wrote: »
    Are they cormac or mullinahone? I only had 1 empty all year, out of about 180. Which was last week, I'm with mullinahone

    I only had 2 or 3 with Mullinahone since it started. I've had 5 or 6 with Cormac this year. I'm hoping the tags last a lot longer with Cormac than Mullinahone so it should more than even out.


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