China Fishery Network News Saprolegnia is the most common disease in aquaculture. Malachite green is commonly used as a drug for prevention and treatment. Malachite green has a carcinogenic and teratogenic effect, and the country has included it as a banned fishery drug. Now, what measures should we take in the prevention and control of aquatic mold disease?
1. Before the fish species are stocked, the ponds are cleaned and disinfected with quicklime. For every 667 square meters of pond, 100 kg of lime is used. After the water is discharged, the whole pool is evenly sprinkled, which can significantly reduce the probability of occurrence of this disease.
2. Avoid fish injuries. In the process of fishing, transportation and stocking, the operation should be light and fish should be avoided as far as possible. In addition, fish stocking should avoid cold weather as much as possible.
3. Fish soaked and disinfected. Fish species should be soaked with 3% to 5% salt water for 5 to 10 minutes before stocking.
4. All over the pool. When the fish in the pond suffer from hydromycosis, we can use the following methods for treatment.
1 When the water depth is 1 meter, 2.5 kg of madder grass, 0.5 kg of black wolfberry, and 2 kg of maple leaf are mixed for every 667 square meters of water. The whole juice is splashed with water after being diluted with water in the frying sauce. Once a day, 2 to 2 3 times.
2 When the water depth is 1 meter, use 5 kg of calamus juice and 1 kg of salt for every 667 square meters of water. Add 20 kg of human urine to mix evenly.
3 After the whole pool is evenly sprinkled with methylene blue water, the concentration of methylene in the pool water reaches 2 to 3 PPM, and it is sprinkled again after 3 to 4 days.
5. Matters needing attention when artificially breeding.
1 Try not to use injured fish as broodstock. If an injured broodstock enters the pool, it must be smeared with a sulfonamide ointment on the wounded broodstock.
2 Control of fish eggs with watery mildew. The first is to improve the fertilization rate of fish eggs. The second is that the fish nest is soaked in a 3% to 5% formalin solution for 2 to 3 minutes or soaked in a 1% to 3% saline solution for 20 minutes. Third, the methylene blue aqueous solution was splashed in the water of the hatching water, so that the concentration of methylene blue in the water reached 5PPM.
1. Before the fish species are stocked, the ponds are cleaned and disinfected with quicklime. For every 667 square meters of pond, 100 kg of lime is used. After the water is discharged, the whole pool is evenly sprinkled, which can significantly reduce the probability of occurrence of this disease.
2. Avoid fish injuries. In the process of fishing, transportation and stocking, the operation should be light and fish should be avoided as far as possible. In addition, fish stocking should avoid cold weather as much as possible.
3. Fish soaked and disinfected. Fish species should be soaked with 3% to 5% salt water for 5 to 10 minutes before stocking.
4. All over the pool. When the fish in the pond suffer from hydromycosis, we can use the following methods for treatment.
1 When the water depth is 1 meter, 2.5 kg of madder grass, 0.5 kg of black wolfberry, and 2 kg of maple leaf are mixed for every 667 square meters of water. The whole juice is splashed with water after being diluted with water in the frying sauce. Once a day, 2 to 2 3 times.
2 When the water depth is 1 meter, use 5 kg of calamus juice and 1 kg of salt for every 667 square meters of water. Add 20 kg of human urine to mix evenly.
3 After the whole pool is evenly sprinkled with methylene blue water, the concentration of methylene in the pool water reaches 2 to 3 PPM, and it is sprinkled again after 3 to 4 days.
5. Matters needing attention when artificially breeding.
1 Try not to use injured fish as broodstock. If an injured broodstock enters the pool, it must be smeared with a sulfonamide ointment on the wounded broodstock.
2 Control of fish eggs with watery mildew. The first is to improve the fertilization rate of fish eggs. The second is that the fish nest is soaked in a 3% to 5% formalin solution for 2 to 3 minutes or soaked in a 1% to 3% saline solution for 20 minutes. Third, the methylene blue aqueous solution was splashed in the water of the hatching water, so that the concentration of methylene blue in the water reached 5PPM.
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