CATDOLL : CATDOLL: What method is used to treat white tail disease in white shrimp?

① Soak tea dregs in tea seed cake for 6 hours, then spray the entire pond with a final concentration of 15-20 grams per cubic meter of water. Change the water 3 hours after application.

② Mix 20g of formalin with every cubic meter of water and sprinkle it over the entire pond. Change the water 2 hours after application.

③Spray 2-3 grams of chlorine dioxide per cubic meter of water throughout the pool.

The temperature in spring this year is higher than in previous years. In April, we will experience two of the twenty-four solar terms, "Qingming" and "Guyu". The southern region needs to pay attention to the impact of the sudden increase in rainfall during the "Qingming" period on aquaculture. Although the cold wave in the northern region has basically ended after the "Guyu", we need to pay attention to the occurrence of the "late spring cold" phenomenon. According to the national aquaculture disease monitoring data in the past two years, in April, we should pay special attention to fish Saprolegniasis, shrimp white spot syndrome and crab fixed ciliate disease. The diseases that are prone to occur and need to be vigilant and the prevention and control measures are as follows:

1. Be alert to diseases

1. Saprolegniasis: It mainly harms fish, shrimps, crabs, etc., and the key focus area is the area north of the Yangtze River.

2. Sessile ciliate disease: mainly harms river crab larvae and adult crabs, and key areas of concern are Jiangsu, Jiangxi, Hubei, Anhui, etc.

3. White spot syndrome: The main targets of the disease are juvenile white shrimps such as Penaeus vannamei, Penaeus chinensis and Penaeus japonicus. The key areas of concern are coastal breeding areas such as Guangdong, Guangxi and Hainan.

4. Carp Spring Viremia: It mainly occurs in carp, koi, goldfish, etc. The water temperature is 8℃-20℃, especially 15℃-17℃. Focus on the main carp breeding areas such as Beijing, Tianjin, Hebei, Shanghai, Jiangsu, Jiangxi, Hubei, and Sichuan.

6. Infectious hematopoietic necrosis: The main target is rainbow trout, the water temperature is 8℃-15℃, and the younger the fish, the more sensitive it is to the disease. The key areas of concern are concentrated water aquaculture areas such as Beijing, Hebei, Liaoning, Shandong, and Gansu.

7. Infectious spleen and kidney necrosis disease: The main target of the disease is mandarin fish, with special attention paid to the main mandarin fish breeding areas in South China and East China.

8. White-tail disease of Macrobrachium rosenbergii: It is prone to occur during the Macrobrachium rosenbergii nursery stage, and the key areas of concern are the Macrobrachium rosenbergii nursery areas in Fujian and Guangdong.

9. Bacterial septicemia of freshwater fish: It occurs in all freshwater fish, with special attention paid to the main freshwater fish breeding areas such as Liaoning, Jiangsu, Shandong, Henan, Anhui, Guangdong, and Hunan.

11. Dactylopsis: It mainly harms silver carp, bighead carp, grass carp, eel, etc., with key areas of concern including Jiangxi, Fujian, Guangdong, Shaanxi, etc.

In addition, it is also necessary to prevent gill rot, enteritis, red skin disease, etc. in advance.

II. Prevention and Control Measures

1. Strengthen quarantine. Strengthening quarantine of aquatic seedlings is the most effective way to control diseases at the source. To ensure the quality of seedlings, on the one hand, we must be careful not to introduce seedlings carrying pathogens; on the other hand, seedlings that continue to be produced or sold after wintering should be sent to the inspection department for quarantine.

2. Do a good job of disinfection. Clean the pond before stocking to kill pathogenic microorganisms in the aquaculture water. At the same time, thoroughly disinfect the aquaculture production tools and transportation tools. Disinfect the seedlings before stocking.

3. Standardize production. During stocking and fishing, pay attention to operations to avoid injuring the fish, avoiding infection by pathogens, and preventing the occurrence of Saprolegniasis.

4. Water quality adjustment. Add new water or increase oxygen in a timely manner according to the changes in water quality. Regularly sprinkle quicklime all over the pond, regularly use beneficial microorganisms to adjust the water quality, and take more precautions against the "late spring cold" phenomenon.

The temperature in spring this year is higher than in previous years. In April, we will experience two of the twenty-four solar terms, "Qingming" and "Guyu". The southern region needs to pay attention to the impact of the sudden increase in rainfall during the "Qingming" period on aquaculture. Although the cold wave in the northern region has basically ended after the "Guyu", we need to pay attention to the occurrence of the "late spring cold" phenomenon. According to the national aquaculture disease monitoring data in the past two years, in April, we should pay special attention to fish Saprolegniasis, shrimp white spot syndrome and crab fixed ciliate disease. The diseases that are prone to occur and need to be vigilant and the prevention and control measures are as follows:

1. Be alert to diseases

1. Saprolegniasis: It mainly harms fish, shrimps, crabs, etc., and the key focus area is the area north of the Yangtze River.

2. Sessile ciliate disease: mainly harms river crab larvae and adult crabs, and key areas of concern are Jiangsu, Jiangxi, Hubei, Anhui, etc.

3. White spot syndrome: The main targets of the disease are juvenile white shrimps such as Penaeus vannamei, Penaeus chinensis and Penaeus japonicus. The key areas of concern are coastal breeding areas such as Guangdong, Guangxi and Hainan.

4. Carp Spring Viremia: It mainly occurs in carp, koi, goldfish, etc. The water temperature is 8℃-20℃, especially 15℃-17℃. Focus on the main carp breeding areas such as Beijing, Tianjin, Hebei, Shanghai, Jiangsu, Jiangxi, Hubei, and Sichuan.

6. Infectious hematopoietic necrosis: The main target is rainbow trout, the water temperature is 8℃-15℃, and the younger the fish, the more sensitive it is to the disease. The key areas of concern are concentrated water aquaculture areas such as Beijing, Hebei, Liaoning, Shandong, and Gansu.

7. Infectious spleen and kidney necrosis: The main targets are mandarin fish, with special attention paid to the main mandarin fish breeding areas in South China and East China.

8. White-tail disease of Macrobrachium rosenbergii: It is prone to occur during the Macrobrachium rosenbergii nursery stage, and the key areas of concern are the Macrobrachium rosenbergii nursery areas in Fujian and Guangdong.

9. Bacterial septicemia of freshwater fish: It occurs in all freshwater fish, with special attention paid to the main freshwater fish breeding areas such as Liaoning, Jiangsu, Shandong, Henan, Anhui, Guangdong, and Hunan.

11. Dactylopsis: It mainly harms silver carp, bighead carp, grass carp, eel, etc., with key areas of concern including Jiangxi, Fujian, Guangdong, Shaanxi, etc.

In addition, it is also necessary to prevent gill rot, enteritis, red skin disease, etc. in advance.

II. Prevention and Control Measures

1. Strengthen quarantine. Strengthening quarantine of aquatic seedlings is the most effective way to control diseases at the source. To ensure the quality of seedlings, on the one hand, we must be careful not to introduce seedlings carrying pathogens; on the other hand, seedlings that continue to be produced or sold after wintering should be sent to the inspection department for quarantine.

2. Do a good job of disinfection. Clean the pond before stocking to kill pathogenic microorganisms in the aquaculture water. At the same time, thoroughly disinfect the aquaculture production tools and transportation tools. Disinfect the seedlings before stocking.

3. Standardize production. During stocking and fishing, pay attention to operations to avoid injuring the fish, avoiding infection by pathogens, and preventing the occurrence of Saprolegniasis.

4. Water quality adjustment. Add new water or increase oxygen in a timely manner according to the changes in water quality. Regularly sprinkle quicklime all over the pond, regularly use beneficial microorganisms to adjust the water quality, and take more precautions against the "late spring cold" phenomenon.

It has no effect on water quality. You can use fungi to adjust the water after using the poor spring, but it is irritating to shrimp. You can pay attention to feeding less, but not more. You can feed more in the later stage, which refers to the first 20 days before selling. I am optimistic about Boqingpi and give me an adoption.