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In eel farming, gill nephritis must be strictly prevented.
Gill nephritis is a disease that causes great harm to eels. The epidemic period of this disease is relatively long, beginning in December and lasting until May of the following year. Small-sized eel fingerlings can have a mortality rate of over 50% when affected by this disease during the overwintering period. Larger eels develop the disease somewhat later than small-sized fingerlings, generally between February and March. If the disease is severe in autumn, the harm from gill nephritis in winter will be greater. When water temperatures begin to rise in February and March, secondary infections such as water mold disease, red fin disease, and red spot disease are likely to occur. Ponds whose water contains salt generally do not develop this disease, that is,
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Winter is a high-incidence season for pig diarrhea, strictly guard against coronavirus disease
Strictly guard against pig diarrhea caused by coronavirus disease in winter
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