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Thread: KHV... Again

  1. #1
    Daihonmei MikeM's Avatar
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    KHV... Again

    It is reported that Sacramento Koi has been hit by KHV. They imported koi from Japan produced by over a dozen breeders. Among these was Chogoro. Kim's Koi in Belgium has reported that the Japanese government has shut down Chogoro, euthanizing all koi on the premises. Kim's Koi is also reporting KHV detected in koi produced by the Hoshikin and Koda
    farms. It is unclear to me whether the infected koi produced by Koda and Hoshikin had been mixed with koi from other sources or were infected at those farms. I am hopeful there will be further information. It would be unfortunate for these breeders to lose hobbyist and dealer clientele if their fish were infected after leaving their premises. It is also reported that an export dealer in Japan who mixes koi from many breeders has shut down due to KHV.

    A number of U.S. dealers, and others around the world, were hit with KHV last season, including ones with reputations for being very careful when it comes to bio-security. But, the decline in publicly reported cases in recent years led some to become lax, and unusual circumstances resulted in others skipping some standards in the necessity of the moment. All suffered a hard lesson, as did their customers. The increase in known incidents of KHV among Japanese koi suggests people got lazy, lulled by the absence of news of outbreaks. It is as important now as in years past, when KHV hysteria abounded, for hobbyists to make sure they are dealing with dealers who take bio-security seriously. If you do not personally know how the dealer handles new imports, ask about their protocols. By asking the hobbyist delivers a strong message that the extra work involved is recognized and appreciated.... and expected. There will always be risk. The risk can be minimized if all do their part. That includes hobbyists being loyal to the dealer who does what it takes, even it it means his koi cost a bit more.

  2. #2
    Daihonmei MikeM's Avatar
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    Here is a report dated January 11 issued by Mitsunori Isa on behalf of the Niigata region of the All Japan Nishikigoi Promotion Association:

    Report of KHV incidence in Niigata region (2018)

    First of all, thank you very much for your cooperation and understanding of our activities.
    We have been working with the governor’s guidance on preventing the occurrence of widespread disease in the Niigata region. In spite of our efforts, KHV was detected at some breeders in 2018 that unfortunately were shipped. On behalf of all Niigata breeders, we deeply apologize for any inconvenience this has caused you.
    We would like to share the information of each breeder’s KHV situation. The information will be updated from time to time, so please keep checking the status.

    Tazawa Koi Farm (Uonuma City)
    June – Received positive KHV result (Inspected by Kento Food and Environment Analysis Center)
    -> Shipping suspension
    To prevent spread of KHV, euthanized all Koi which possibly infected.
    August – Confirmed positive KHV result (Inspected by National Research Institute of Aquaculture)
    -> Instruction of no movement of Koi
    All Koi in mud-pond was negative result (Inspected by Niigata Prefectural Inland Water Fisheries Experiment Station)
    Mr. Tazawa is elderly so he will euthanize all his Koi and close his farm.

    N.N.B.C. (Nagaoka City)
    Nov 25th – Received positive KHV result (Inspected by Kento Food and Environment Analysis Center)
    -> Shipping suspension
    Nov 28th – Confirmed positive KHV result (Inspected by National Research Institute of Aquaculture)
    -> Instruction of no movement for all green house koi
    (KHV positive result was found in green house pond)
    Nov 30th – Euthanized and sterilized
    In his green house, some ponds are positive and others are negative. However, to prevent spreading KHV, all Koi in the same green house were euthanized. Sterilization of affected green house has been completed.
    His other facility’s ponds were found to be negative. As precaution, those ponds are being heated to bring up the temperature and will be tested again shortly.
    Keep instruction of no movement of Koi.

    Hoshikin Koi Farm (Ojiya City)
    Dec 14th – Received positive KHV result (Inspected by Niigata Prefectural Inland Water Fisheries Experiment Station)
    -> 1 out of 5 green houses, of which 1 pond out of 10 ponds was positive result.
    Shipping suspended. Remaining 4 green houses were negative.
    Dec 17th – Confirmed positive KHV result (Inspected by National Research Institute of Aquaculture)
    -> Instruction of no movement for all green house Koi
    Dec 19th – 9 out of 10 ponds were negative
    -> Keep suspension of shipping.
    Dec 27th – Euthanized and sterilized
    -> Following the governor’s instruction, euthanized all koi in the entire green house which got positive result. Also sterilizing green house has been completed.
    The remaining other 4 green houses which were negative are being heated to bring the ponds’ water temperature up and are now under observation. The farm will have another inspection shortly.
    Keep instruction of no movement of Koi.

    Yamacho Koi Farm (Nagaoka City)
    Dec 17th – Received positive KHV result (Inspected by Niigata Prefectural Inland Water Fisheries Experiment Station)
    -> 1 out of 3 green houses was positive result.
    Shipping suspended.
    Dec 19th – Confirmed positive KHV result (Inspected by National Research Institute of Aquaculture)
    -> Instruction of no movement for all green house Koi
    Dec 20th – Euthanized and sterilized
    -> There was a movement of Koi in each of his green houses, following the governor’s instruction, euthanized all koi in the 3 green houses. Also sterilizing green house is completed.

    To offer healthy koi to our customers and hobbyists, all Niigata breeders are committed to enact a stricter inspection system and protocol to ensure health and safety of Nishikigoi. To achieve our goal, we are forming the ‘Nishikigoi Guideline Committee’ that will formalize the protocols in preventing spread of fisheries diseases. Thank you for your understanding as we work to ensure Nishikigoi’s future.

  3. #3
    Daihonmei MikeM's Avatar
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    Please note that this report covers incidents discovered in December. The reported Choguro outbreak is the Yamacho Koi Farm.
    Last edited by MikeM; 01-16-2019 at 08:23 AM.

  4. #4
    Daihonmei MikeM's Avatar
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    It is reported that Koda Koi Farm has been inspected, all fish kept at permissive temperatures and NO KHV detected. The farm has a clean bill of health. It would seem the one koi from Koda that was KHV positive became infected after it left the farm.

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