KHV (CyHV3)

One for us "all" to worry about , well "yes".

  1. Dave 54

    Dave 54

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    Dave 54 submitted a new article:

    KHV (CyHV3) - can it infect your koi .

    Read more about this article...
     
    Dave 54, Jul 5, 2015
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    Tula likes this.
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  2. Dave 54

    Tula

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    Very scary stuff. I was reading about this on a koi forum the other day :(
     
    Tula, Jul 5, 2015
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  3. Dave 54

    Dave 54

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    Which one was that Tula might want to take a look at it ourselves later but it shows the importance of QTing our fish even just to try and slow the spread of this dread virus .....

    Dave
     
    Dave 54, Jul 5, 2015
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  4. Dave 54

    bettasngoldfish Maria

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    Agreed, Very scary.

    I think it will be interesting to see if a vaccine ever becomes available and put in to use. If all breeders and or dealers vaccinated young fish prior to leaving/being sold *maybe* it would reduce infection rate? In the perfect world anyway, right?

    This also brings to mind the idea of having a "closed pond" in the sense that you add any koi to your pond at the same time and then no new stock are ever added unless of course born in the pond.
     
    bettasngoldfish, Jul 5, 2015
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  5. Dave 54

    Meyer Jordan Tadpole

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    Just a couple of additional points that I would like to add to an already great article.

    -A vaccine was developed in Israel by KoiVax Ltd and for a short period of time was available in the U.S. through Novartis. It was quite expensive and could only be administered by a licensed Veterinarian. The vaccine was pulled from the U.S. market after a contract dispute between the manufacturer and Novartis. This vaccine is still available to commercial aquaculturists.

    -CyHV3 (KHV) was originally thought to be carried by Carp/Koi. Subsequent research has shown that It several other specie of fish can be carriers of this virus.......Goldfish being the specie of most concern to pond owners.

    -CyHV3 (KHV) is an immuno-suppressant virus. Consequently, as Dave states in his article, opens the infected fish to secondary bacterial and parasitic infections, which is what ultimately causes the mortality. One has to cautiously consider that any pond-wide pathogenic issue, from Costia and flukes to fin rot and ulcers, may have CyHV3 (KHV) as the underlying cause. This I know from personal experience gained while diagnosing what was eventually found to be a CyHV3 (KHV) outbreak in a customer's pond. If your fish develop any health issues that do not respond as expected from proper treatment, the underlying cause may well be CyHV3 (KHV).
     
    Meyer Jordan, Jul 5, 2015
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  6. Dave 54

    Dave 54

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    Many thanx for the additional points and thanx for the idea to do this article in discussions the other day.
    They dont knick name the KHV (CyHV3) virus the Aids of the koi world for nothing, because it in laymans terms acts just like it eventually like in a human being KHV(CyHV3) overwhelms your koi's ability to fight things off
    As you mentioned I found quite frightening was the ability of other species like tench to be a carrier of KHV(CyHV3) which I believe I mentioned
    However am still unclear what came first GHV (CyHV2) or KHV (CyHV3) .



    Dave
     
    Dave 54, Jul 5, 2015
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  7. Dave 54

    Meyer Jordan Tadpole

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    CyHV3 was first identified as a separate virus in 2005. CyHV1 and CyHV2 were already well known at that time. This is not to say that CyHV3 was not active, but undetected/unidentified. before 2005.
     
    Meyer Jordan, Jul 5, 2015
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  8. Dave 54

    Dave 54

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    I did hear a tale about the Israelis having problems with frogs on their carp farms rather than just let them be they used to shoot them and the bits of frog end up in the water to be eaten by the koi and it was through this the kio first became infected .
    However if this is true or not [and I take this with a big pinch of salt] I know not but its just one of the many rumours that go around the koi world in the UK from time to time


    Dave
     
    Dave 54, Jul 5, 2015
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  9. Dave 54

    Meyer Jordan Tadpole

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    Without rumors and 'Old Wives Tales' the internet would not be nearly so interesting!!:rolleyes::rolleyes:
     
    Meyer Jordan, Jul 5, 2015
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  10. Dave 54

    Dave 54

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    Without them we'd be left with inuendo Meyer :LOL:

    Dave
     
    Dave 54, Jul 5, 2015
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