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How to prevent fish fulminant hemorrhagic disease? Introduction to practical methods

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In autumn, as fish grow rapidly, pond farming density increases, water quality is prone to deterioration, and the reproduction rate of various pathogenic pathogens accelerates, making it very easy to trigger fulminant hemorrhagic disease. The preventive measures are as follows: 1. Before the fry and fingerlings are put into the pond, they must be soaked and disinfected with 1%-2% salt water. The soaking time depends on the fish's physique and the temperature. When conditions permit, fish fingerlings can be soaked with fulminant hemorrhagic disease vaccine. 2. Change water and increase oxygen in a timely manner. Keep the water quality fresh and change the water frequently. If conditions limit water changes and it is inconvenient, quicklime can be slaked into slurry and splashed over the whole pond, and at the same time, aerators should be used reasonably.

In autumn, as fish grow rapidly, pond farming density increases, water quality is prone to deterioration, and the reproduction rate of various pathogenic pathogens accelerates, making it very easy to trigger fulminant hemorrhagic disease. The preventive measures are as follows:

1. Before the fry and fingerlings are put into the pond, they must be soaked and disinfected with 1%-2% salt water. The soaking time depends on the fish's physique and the temperature. When conditions permit, fish fingerlings can be soaked with fulminant hemorrhagic disease vaccine.

2. Change water and increase oxygen in a timely manner. Keep the water quality fresh and change the water frequently. If conditions limit water changes and it is inconvenient, quicklime can be slaked into slurry and splashed over the whole pond, and at the same time, aerators should be used reasonably.

3. Regularly disinfect the water body and use oral drugs for prevention. Every 10-15 days, environmentally friendly drugs such as dibromohydantoin and bromochlorohydantoin can be used alternately to disinfect the water body. Five days after disinfection, beneficial microbial preparations can be used to improve water quality. Mix appropriate amounts of safe drugs such as berberine hydrochloride and erythromycin specially for aquatic products into the feed, with 5 days as one treatment course, and feed 1-2 treatment courses per month.

4. Reasonable dense stocking and polyculture. When the farming density is too high, carry out partial harvesting and thinning in batches to maintain a reasonable farming density in the pond, and try not to let the water environment carry an overloaded stock of fish.

5. Choose medium- and high-grade feed, and use less feed raw materials (raw bran, corn, @#@245@#@, etc.) and low-grade feed.

6. Feed scientifically, and when the water quality is too dense, promptly add fresh water.

7. Pay attention to pond hygiene. Usually remove weeds frequently and clean the feeding area, do not leave residual bait, and when dead fish are found, promptly remove them from the pond and carry out harmless treatment.

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