How to treat grass carp hemorrhagic disease? What is fish hemorrhage?

Prevention] (1) Disinfection prevention: use quicklime, copper sulfate, and bleaching powder for prevention. According to the water depth of 1 meter per mu of water surface with 25 kg of quicklime slurry poured in the whole pool, and then dissolved with 400 grams of copper sulfate and splashed, every 20 days to rotate the drug 1 time, from June to mid-October, at the same time insist on the food field with copper sulfate, ferrous sulfate mixture hanging bag and bleaching powder hanging basket alternately disinfected.

The dosage of copper sulfate is 100 grams, 40 grams of ferrous sulfate, and 100 grams of bleaching powder. Every 3 days is a cycle, and the disinfection is alternated every 3 days.

2) Chinese herbal medicine prevention: according to the water depth of 1 meter per mu with 500 grams of Guanzhong, 200 grams of banlan root and wild chrysanthemum seedlings, first crushed, and then soaked in 10 kg of boiling water for 4 6 hours with water splashed in the whole pool, once every 25 days, there is a good disease prevention effect.

3) Immune prophylaxis: Grass carp hemorrhagic disease can be effectively prevented by immunizing grass carp fingerlings with inactivated grass carp hemorrhagic disease vaccine or grass carp hemorrhagic disease soaking vaccine. The immune protection period of the vaccine is more than 14 months, and the immune protection rate can reach 95%.

The immunization protection period of the soaked vaccine is more than 20 months, and the immune protection rate can reach 85%. The artificial immunization for the prevention of grass carp hemorrhagic disease is simple to operate, easy to use, low cost and good effect. Note:

The use of injectable or infused vaccines should be handled in accordance with the instructions for use of the product. 【**】(1) External drugs: copper sulfate or copper oxide can be sprinkled on the whole pool to make the pool water concentration of gram 3.

However, copper sulfate should be applied twice in a row (once every other day). Dibachalim can also be used to make the pool water concentration of gram 3.

2) Internal medicine: feed three yellow medicine bait, that is, 100 150 grams of rhubarb, cork and skullcap for every 10,000 fingerlings. After grinding into flour decoction or soaking in hot boiled water overnight, mix bait and feed, and feed for 2 to 3 days; For every 50 kg of fish, 200 pieces of rhubarb soda and 10 tablets of sulfadiazine were fed to the fish with mashed bait for 4 to 5 days; For every 10,000 fingerlings (or 50 grams of fingerlings), 4 kg of peanuts, kg of garlic and kg of salt are fed with water, ground and mixed bait.

2 times a day for 4 days.

Hemorrhagic disease: pathogen: reovirus, virus reproduction temperature 20-35, optimal reproduction temperature about 30.

Symptoms: The body surface is dark and slightly red, there is bleeding under the skin and muscles, congestion around the mouth, upper and lower jaws, the top of the head and around the orbits, and even the protruding eyeballs, the gill cover and fins are also congested, the muscles are punctate or band-like hemorrhage, and the muscles of the whole body are bright red in severe cases. Sometimes ascites, no food in the intestines, congestion but not erosion, and the diagnosis requires a comprehensive observation of the bleeding symptoms of the internal and external organs and tissues of the diseased fish.

Epidemic hazard: the disease is the most harmful infectious disease in the current grass carp breeding stage, prevalent in the national fishery breeding areas, the epidemic season is from late June to early September, when the water temperature is above 27.

Prevention and control technology: Oral administration of bleeding Kangtai, the amount of dead fish began to decrease the next day, and it was obviously effective in 3 days, with a ** rate of more than 90%! 1. For the hemorrhagic disease of silver carp, use 2-3 acres (1 meter water depth) per bag, 1 time.

The number of deaths decreased significantly the next day or stopped dying. It also has a good effect on crucian carp, bream and grass carp. Note: During the dilution process of adding water, it should be stirred evenly and then sprinkled.

It is also safe to increase the dosage per mu to one bag.

2. When the high temperature water quality is more fertile, first use the "detoxification water purification king" to purify the suspended organic matter in the water body, and then splash "bleeding Kangtai" after 4 hours, or splash the algae killing product first, and then splash "bleeding Kangtai" the next day, which can significantly improve the efficacy. Because algae can carry pathogenic bacteria such as Aeromonas jelly, which affects the efficacy of the drug.

3. Bream, grass carp, crucian carp hemorrhagic disease: a bag of bleeding Kangtai with a bag of enrofloxacin, mixed with 80 kg of material, the amount of death began to decrease on the second day of feeding, and the dead fish were stopped in 2-3 days for 3 days.

4. If the hepatobiliary lesion is severe, it can be mixed with hepatoprotective and gallbladder protection drugs at the same time.

The disease is serious and can be even more costly if not properly managed or timely**.

Summary. **The internal drugs for grass carp hemorrhagic disease are mainly natural plant antiviral compound preparations, including Radix radix, Houttuynia cordata, Daqing leaf, Diding, etc.

The specific method is: ultra-fine crushing of natural plant medicinal materials and homogeneous mixing, weighing the drug according to the dose per kg of fish weight, soaking in boiling water for 20-30 minutes and then mixing feed, drying and then feeding, continuous feeding for 3-5 days. For example, the natural plant medicine after ultrafine grinding is directly mixed with grass carp feed raw materials to prepare puffed pellet feed bait, and then fed**, the effect is also very obvious.

How is bacterial hemorrhagic disease of grass carp**.

1. For bacterial hemorrhagic disease, first of all, reduce the material by 70%, take the Jun Wuying mixture internally, take the Xia nuclear ruler liver prosthetic gallbladder mixture Zen's resistant internally, and use it for 7 consecutive days, you can see that the grass carp liver has been significantly improved and the death of fish can be reduced. At the same time, He Chun disinfected the water body, and sprinkled povidone iodine on the whole pool to reduce the number of harmful bacteria in the water body, improve the water environment, and maintain the ecological balance.

2. For viral hemorrhagic disease, there is a good way to prevent the death of the dead, the key is to stabilize the water quality, reduce the use of disinfectants during the peak period of death, Hu Gaohui If disinfectants must be used, it is recommended to use povidone-iodine. Before the arrival of white dew, reduce the material by 30%, if fatty liver and other hepatobiliary diseases have occurred, reduce by 50%, and regularly use the green to improve the bottom environment of the pond.

After the occurrence of grass carp hemorrhagic disease in the breeding pond, water disinfection and internal medication are mainly used to control the water disinfection, and the water disinfection can be disinfected and the water quality can be improved by splashing quicklime (35-40g per cubic water body) in the whole pond. For the grass carp pond where hemorrhagic disease occurs, povidone-iodine or quaternary ammonium salt complex iodine (per cubic water milliliter) is usually continuously sprinkled 2-3 times, once every other day.

**The internal drugs for grass carp hemorrhagic disease are mainly natural plant antiviral Fudan Zaocha prescription preparations, including Radix Platyxa, Houttuynia cordata, Daqing leaf, Diding, etc. The specific method is: ultra-fine grinding of natural plant medicinal materials and homogeneous mixing, weighing the drug according to the dose per kg of fish weight, soaking in boiling water for 20-30 minutes and then mixing the feed, drying the mold skin and then feeding, continuous feeding for 3-5 days that is, open and roll.

For example, the natural plant medicine after ultrafine grinding is directly mixed with grass carp feed raw materials to prepare puffed pellet feed bait, and then fed**, the effect is also very obvious.

I hope I can help you, dear.

1. The largest immune organ of grass carp is the liver, but in practice, grass carp has more serious fatty liver due to overfeeding or unbalanced feed nutrition. Grass carp liver loss and decreased immunity lead to bacteria and viruses easily invading the fish body to induce grass carp hemorrhagic disease. The chivalrous liver and gallbladder can promote fat metabolism and repair damaged liver cells; Jun Wuying can increase the antiviral ability of grass carp, so Jun Wuying + chivalrous liver and gallbladder have a good effect on the prevention of grass carp hemorrhagic disease.

2. Proper fertilization, water transfer, and bottom modification, maintaining a certain fertility of the water body will help the stability of the water body, and opening more aerators and increasing the water depth will also help the water body to stabilize and reduce the incidence caused by water change. Before putting seedlings, remove the excess silt at the bottom of the pond, use quicklime to clear the pond, and the conditions allow the dry pond to be exposed to the sun for half a month.

3. Increase oxygenation, install the aerator in time after the spring fish seed pond and the pond are put into the fish, and open the aerator according to the water quality, especially in rainy weather, it is wrong to think that the water temperature is low and the density is not easy to lack oxygen.

If grass carp has hemorrhagic disease, the fish pond should be disinfected first. It can be sterilized with Chinese herbs such as skullcap, or with various disinfectants. The next step is to incorporate the drug into the grass carp diet.

A mixture of peanuts, garlic and salt can be mixed into the diet of grass carp for 5 days. In this way, the condition will improve. After they recover, they should regularly disinfect the fish pond or nurse the grass carp to prevent them from getting sick again.

Grass carp is a common fish that can be farmed in captivity. Grass carp can get sick, and many diseases are very common, such as hemorrhagic disease. It is a viral disease that is caused by a virus, and most of it is caused by aquatic reovirus.

Grass carp are most likely to get sick when they are young, specifically when they are in length, and sometimes adult grass carp can also get sick; From the perspective of the season, it is easy to get sick when the water temperature is high, especially when the water temperature is 20-33 degrees.

There are many reasons why the virus can multiply, causing grass carp to develop hemorrhagic disease. For example, when water quality deteriorates, transparency decreases, and the amount of dissolved oxygen in the water decreases, making it easier for the virus to multiply. Moreover, at this time, the resistance of grass carp may be relatively weak, and the symptoms of hemorrhagic disease will be more serious.

For example, the body of a grass carp may become darker or darker, accompanied by bleeding, and its appetite may be reduced, and in severe cases, it may stop eating altogether.

1. **Qingzai: After grass carp has hemorrhagic disease, measures need to be taken in time. First of all, it is necessary to disinfect the breeding pond or fish pond, which can be treated with Chinese herbs such as skullcap or directly with various disinfectants.

The next step is to incorporate the drug into the diet of grass carp**. You can mix peanuts, garlic and salt, mix it into grass carp food after pulping, and feed it for about 5 days.

2. Prevention after that: In the subsequent breeding process, it is best to take year-round measures to prevent this disease, especially when the grass carp is still relatively small, and when it comes to high temperature weather. Special vaccines can be given to grass carp, that is, vaccines made after the inactivation of hemorrhagic tissue plasma.

It can also be disinfected regularly during the disease-prone season, and disinfectants such as chlorine dioxide can be used.

What is the cause of hemorrhagic disease in grass carp, and what is the method.

Hello, dear, I am glad to answer for you: The causes and methods of grass carp hemorrhagic disease are divided into several situations, and the common ones are grass carp hemorrhagic disease caused by parasites, bleeding caused by bacteria, and bleeding caused by stress. Generally, we will do a microscopic examination of the fish itself around March to check whether there are worms or other worms on the fish, and then we will do targeted insecticides to control hemorrhagic diseases and other diseases caused by parasites.

After insecticide, we need external disinfectants to disinfect fish and water bodies, one to reduce inflammation and antibacterial to parasitic sites, and the other to control and kill water pathogenic bacteria, and prevent and improve hemorrhagic diseases. The above part is a preventive work at the beginning of a farming cycle and is relatively important. Severe bleeding, pulling nets, weather changes, and abrupt changes in water quality and environment caused by various external factors will cause the stress response of fish, and bleeding is the obvious condition when the stress reaction is severe.

In this regard, we need to start from the physique of the fish itself and the water quality of the environment. This is the key point of process management. It is a prerequisite for preventive work.

The result is a relatively stable water quality environment for fish with a certain degree of resistance to survive, so as to prevent the stress response of the fish. There are other aspects that need to be summarized and refined, and dealt with in combination with the actual situation. The same will help you.