Recently, the National Aquatic Technology Extension Station forecasted and released the occurrence and prevalence of aquaculture diseases in China this year for the first time based on the detection results of aquaculture diseases in 17 provinces (autonomous regions and municipalities) in China. The occurrence and prevalence of diseases in various aquaculture species are as follows:
Grass carp: Hemorrhagic disease, red skin disease, gill disease, and enteritis disease are expected to prevail from April to October.
Carp: mainly fulminant hemorrhage, third generation worm disease, and myxosporosis, and the onset period is expected to be from April to October.
Carp: Hemorrhagic sepsis prevails from April to October.
Shrimp: Shrimp virus disease, bacterial disease, parasitic disease and macrophage shrimp disease, red leg disease, ciliate disease will be popular from May to September.
Crabs: Crabs, black-box syndrome, and ciliate-like diseases may occur severely.
Relevant experts believe that in order to fundamentally solve the problem of aquatic diseases, we must further promote the healthy breeding mode, adhere to the principle of “prevention from prevention, prevention and controlâ€, strengthen aquaculture production management, protect the environment of aquaculture waters, use high-quality feed, and regulate and rationalize Medication. The focus of prevention and control of aquaculture diseases this year is to prevent and control bacterial diseases. In view of the fact that the direct economic loss caused by diseases in shrimp farming in China reached 4.9 billion yuan in 2001, accounting for 50% of the total loss of aquaculture. This year we must pay special attention to the prevention and control of shrimp virus disease and bacterial diseases.
1. Bacterial Disease Control Methods Bacterial fish diseases mainly include Aeromonas hydrophila, Edwards, Myxococcus, Pseudomonas, and Vibrio. These aquatic diseases mainly include: hemorrhagic disease, red skin disease, gill disease, black shank disease, enteritis disease, shrimp red leg disease, and bacterial septicemia. They do not occur until the water quality deteriorates and the temperature conditions are appropriate. Grasping the correct methods of prevention and treatment can completely avoid the occurrence of such fish diseases.
1, completely clear pond. After each autumn and winter fishing, the pool water is drained and the bottom of the pool is exposed. Forty-five days prior to the spring release, it was disinfected with a high-efficiency clearing agent to kill pests. 15 days before stocking, 70-100 kg of calcined water per acre was poured to adjust the pH-improving sediment.
2, seed disinfection. Seedlings are cleaned and disinfected with refined iodine, complex chlorine dioxide, or high-grade bacteria. Disinfection with 0.8%-1.5% saline after disinfection is more effective. Crabs should not be disinfected with salt.
3, drug control. Before the onset of the disease season (water temperature 20°C), use a quick-acting bactericidal toxin or high-chlormium chloride, Quickcom B-type and other external agents to disinfect once, and then use the entero-inflammatory, carbuncle, gramlin, or lean-tailed baits for feeding. , feed for 2 days. The disease season (water temperature 25-32°C) is sterilized once every 10-15 days with drugs such as refined iodine or high chloride, bromochlorohydantoin, dibromohydantoin, etc., and fed with garlicin and clodinatin for 2 days. . The crab ponds will be sprinkled with fresh lime water every 15 days in the onset season to adjust the pH of the pool water and use 15-20 grams of lime per cubic meter of water.
Second, viral disease prevention and control measures Secondary infection of bacterial diseases is the main reason for the death of aquaculture-infected virus disease. These aquatic diseases mainly include: shivering of crabs, white muscle disease of shrimp muscles, and viral sepsis. The prevention and treatment of viral diseases must focus on prevention and treatment of bacterial diseases. At the same time take the appropriate virus disease prevention measures.
First, after thoroughly clearing the pond, sterilize it again with refined iodine (1 mg/L) 7 days before the fish release. Iodine has a good control effect on viral diseases.
The second is to increase the use of iodine twice before the onset of the season.
The third is to increase the use of drugs by 1-2 treatments for the diseased ponds to prevent disease outbreaks.
Third, parasitic disease prevention and treatment measures This type of aquatic disease mainly include: anchor head fish disease, third generation worm disease and ciliate disease. The main method of prevention and control
1, completely clear pond. Increased use of Fibrin-Bike when clear ponds, and increased the dosage by 5 times, killing wintering eggs.
2, seedlings, especially shrimp, crab seedlings, stocking selection Shishui Ling I, Xiushuiling II and refined iodine after stocking.
3. 20 days before the onset of illness, when the water temperature was 15-18°C, the use of fipronil, a quick-acting fungus toxin (combined chlorine dioxide) was performed once, and the mixture was mixed with bait-inhibiting and aquatic-producing additives for 2 days.
4, during the onset of the disease, every 10-15 days with high-toxic bacteria clear, long-acting fungus clear tablets for a course of treatment, the use of fish to clear the first time, while using gram blood, insect clearing and aquatic compound additives Bait feeding for 2 days.
5, 4-6 days after administration, every cubic meter of water body will be splashed once with lime water of 15-25 grams.
Grass carp: Hemorrhagic disease, red skin disease, gill disease, and enteritis disease are expected to prevail from April to October.
Carp: mainly fulminant hemorrhage, third generation worm disease, and myxosporosis, and the onset period is expected to be from April to October.
Carp: Hemorrhagic sepsis prevails from April to October.
Shrimp: Shrimp virus disease, bacterial disease, parasitic disease and macrophage shrimp disease, red leg disease, ciliate disease will be popular from May to September.
Crabs: Crabs, black-box syndrome, and ciliate-like diseases may occur severely.
Relevant experts believe that in order to fundamentally solve the problem of aquatic diseases, we must further promote the healthy breeding mode, adhere to the principle of “prevention from prevention, prevention and controlâ€, strengthen aquaculture production management, protect the environment of aquaculture waters, use high-quality feed, and regulate and rationalize Medication. The focus of prevention and control of aquaculture diseases this year is to prevent and control bacterial diseases. In view of the fact that the direct economic loss caused by diseases in shrimp farming in China reached 4.9 billion yuan in 2001, accounting for 50% of the total loss of aquaculture. This year we must pay special attention to the prevention and control of shrimp virus disease and bacterial diseases.
1. Bacterial Disease Control Methods Bacterial fish diseases mainly include Aeromonas hydrophila, Edwards, Myxococcus, Pseudomonas, and Vibrio. These aquatic diseases mainly include: hemorrhagic disease, red skin disease, gill disease, black shank disease, enteritis disease, shrimp red leg disease, and bacterial septicemia. They do not occur until the water quality deteriorates and the temperature conditions are appropriate. Grasping the correct methods of prevention and treatment can completely avoid the occurrence of such fish diseases.
1, completely clear pond. After each autumn and winter fishing, the pool water is drained and the bottom of the pool is exposed. Forty-five days prior to the spring release, it was disinfected with a high-efficiency clearing agent to kill pests. 15 days before stocking, 70-100 kg of calcined water per acre was poured to adjust the pH-improving sediment.
2, seed disinfection. Seedlings are cleaned and disinfected with refined iodine, complex chlorine dioxide, or high-grade bacteria. Disinfection with 0.8%-1.5% saline after disinfection is more effective. Crabs should not be disinfected with salt.
3, drug control. Before the onset of the disease season (water temperature 20°C), use a quick-acting bactericidal toxin or high-chlormium chloride, Quickcom B-type and other external agents to disinfect once, and then use the entero-inflammatory, carbuncle, gramlin, or lean-tailed baits for feeding. , feed for 2 days. The disease season (water temperature 25-32°C) is sterilized once every 10-15 days with drugs such as refined iodine or high chloride, bromochlorohydantoin, dibromohydantoin, etc., and fed with garlicin and clodinatin for 2 days. . The crab ponds will be sprinkled with fresh lime water every 15 days in the onset season to adjust the pH of the pool water and use 15-20 grams of lime per cubic meter of water.
Second, viral disease prevention and control measures Secondary infection of bacterial diseases is the main reason for the death of aquaculture-infected virus disease. These aquatic diseases mainly include: shivering of crabs, white muscle disease of shrimp muscles, and viral sepsis. The prevention and treatment of viral diseases must focus on prevention and treatment of bacterial diseases. At the same time take the appropriate virus disease prevention measures.
First, after thoroughly clearing the pond, sterilize it again with refined iodine (1 mg/L) 7 days before the fish release. Iodine has a good control effect on viral diseases.
The second is to increase the use of iodine twice before the onset of the season.
The third is to increase the use of drugs by 1-2 treatments for the diseased ponds to prevent disease outbreaks.
Third, parasitic disease prevention and treatment measures This type of aquatic disease mainly include: anchor head fish disease, third generation worm disease and ciliate disease. The main method of prevention and control
1, completely clear pond. Increased use of Fibrin-Bike when clear ponds, and increased the dosage by 5 times, killing wintering eggs.
2, seedlings, especially shrimp, crab seedlings, stocking selection Shishui Ling I, Xiushuiling II and refined iodine after stocking.
3. 20 days before the onset of illness, when the water temperature was 15-18°C, the use of fipronil, a quick-acting fungus toxin (combined chlorine dioxide) was performed once, and the mixture was mixed with bait-inhibiting and aquatic-producing additives for 2 days.
4, during the onset of the disease, every 10-15 days with high-toxic bacteria clear, long-acting fungus clear tablets for a course of treatment, the use of fish to clear the first time, while using gram blood, insect clearing and aquatic compound additives Bait feeding for 2 days.
5, 4-6 days after administration, every cubic meter of water body will be splashed once with lime water of 15-25 grams.
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