Causes and Prevention Methods of Spring Viremia in Koi Farming
Spring viremia of koi is mainly caused by koi rhabdovirus, and is a common disease in koi keeping. It only becomes prevalent in spring when the climate gradually warms (water temperature 13 to 20°C). Symptoms: It mainly affects koi over one year old; fry and broodstock are rarely infected....
It is mainly caused by koi rhabdovirus, and is a common disease in koi keeping. It only becomes prevalent in spring when the climate gradually warms (water temperature 13 to 20°C).
It mainly affects koi over one year old; fry and broodstock are rarely infected. It occurs mostly in outdoor rearing ponds; for those kept in indoor fish tanks, because the water temperature changes less drastically, the disease occurs less often.
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In nature, during the cold-water period, this disease is chronic, while after the water temperature warms up in spring it becomes acute, with a relatively high mortality rate.
Mainly, at the end of winter, pay attention to cleaning the sediment in the pond, strengthen the disinfection of the water source, and change the water regularly to prevent drastic changes in water quality.