How to deal with white shrimp bubble disease, how to prevent and control bubble disease of shrimp la

1. Once bubble disease is found, water should be injected immediately, aeration should be strengthened, and the waterwheel in the pool should be opened at the same time, and the gas exchange rate between the atmosphere and the water should be increased through the operation of the waterwheel (the number of waterwheels in operation should be controlled to avoid injecting too much gas into the pool at the same time), and the supersaturated gas should be quickly removed from the pool water.

2. In terms of prevention, avoid direct injection of pumped groundwater, and the easiest way to avoid aeration treatment is to inject groundwater into an empty pond, and then inject it after 1 2 days of aeration to prevent the occurrence of this disease. If there is no empty pool, the water pipe at the inlet can be raised to allow the groundwater to leak into the pool in the form of a waterfall, so as to increase the contact surface between the groundwater and the atmosphere, so as to discharge excess gases.

3 If there is too much plankton in the pond and it is in the summer high water temperature, it is necessary to use drugs to remove some of the plankton to prevent the dissolved oxygen level from being too high. During the day, it is best to stop part of the waterwheel to avoid sending too much gas and increasing the gas saturation, but at night, do not stop the waterwheel, because the green plants in the water are respiring at night, and the shrimp only compete for oxygen at the same time.

<> bubble disease is usually caused by oversaturation of gas in the nursery pond water. Affected larvae have bubbles of varying sizes in the digestive tract or in the blood cavities, and the bubbles are usually round or oblong. When a large number of air bubbles are trapped in the digestive tract or blood cavity, embolism often forms, obstructing the digestion of food or the smooth flow of blood lymph, causing larval death.

The disease is more common in phytoplankton, flourishing in phytoplankton, or in heated nursery ponds. The former is usually under the strong sunlight on a sunny day, phytoplankton photosynthesis releases a large amount of oxygen, which supersaturates the oxygen in the pool water, especially after noon, when the saturation reaches more than 250%, bubble disease can occur; The latter is prone to occur when the temperature control valve is out of tune or when the temperature rises by more than 2-4 in a short period of time (1-2 hours).

Prevention and control methods. 1) Adjust the amount of phytoplankton in the nursery pond to prevent excessive propagation, and use frequent water changes or set up shading curtains to reduce light.

2) When the larval breeding tank needs to be warmed up, it should be warmed up slowly, and it is advisable to increase the temperature within 12-24 hours.

3) When bubble disease occurs, a large amount of new water with a water temperature lower than 1-2 of the pool water can be replaced, which can alleviate the further development of the disease. In general, bubble sickness caused by oxygen supersaturation is relatively easy to resolve; Bubble sickness, caused by air oversaturation, is more difficult to recover from. The implementation of aerated nursery ponds can increase the inflation capacity to burn the wide beam, so that the supersaturated gas escapes with the bubbles.

What are the symptoms if whiteleg shrimp develop bubble disease?

Hello dear, I am honored to receive your question to keep you waiting, hello, the following are several major symptoms of Litopenaeus vannamei bubble disease, as well as how to deal with it 1, most of them occur in the lower god digging outlet; 2. The molting shell, soft shell, gills and tail of the diseased shrimp are easy to turn white; 3. After the shrimp bounces quickly on the surface of the water a few times, and the body loses balance, it will sink to the bottom and die; 4. When most ponds are sick, shrimp eating is normal. The main ** of Litopenaeus vannamei bubble disease: 1. Shallow ponds, the whole dissolved oxygen is supersaturated, and the small shrimp have nowhere to hide; 2. The water is too fertile, and the water body is mainly dominated by small algae and dinoflagellates, and the oxygen production capacity is particularly strong; 3. There are few zooplankton in the water body; 4. The bottom is thin and there is little organic matter; 5. Rainy to sunny (small algae such as chlorella bloom in the water body, resulting in too high dissolved oxygen); 6. After insecticide; 7. New algae cultivation after pouring algae; 8. Turn on the aerator less.

The precautionary measures are as follows: 1. Suitable water level; 2. Scientific cultivation of algae culture, try to use less inorganic fertilizer or organic fertilizer without biological fermentation, such as excellent enzyme calcium air source fertilizer, six anti-algae cultivation paste, etc., regularly carry out top dressing and water retention to ensure the balance of algae phase and bacteria in the water body; 3. Stocking high-quality seedlings; Turn on the aerator scientifically according to the weather conditions or water quality; 4. When the weather turns clear, turn on the aerator and splash the degrader, six control bottom health, grain god, etc., to enhance the permeability of the water body, which is conducive to aeration; 5. Regular use of microbial preparations such as Flexible 100, Live Bacteria King (powder), and Black Gold God is conducive to controlling algae blooms; 6. Try to prevent insects but not kill insects; 7. If conditions permit, an appropriate amount of groundwater (low oxygen content) can be added, which is enough to alleviate "oxygen toxicity". Thank you for your trust, the above is my reply, I hope it can help you, I wish you a happy life and smooth work, give a thumbs up if it is convenient, thank you.

Shrimp bubbles, and under the microscope you can see that the bubbles appear mainly on the intestinal dry plug. If it appears on the plug, it means that the water quality has deteriorated most severely. Mainly the substrate, the water quality has deteriorated seriously, producing a large number of harmful gases, and the dissolved oxygen condition at the bottom is seriously insufficient, resulting in a decrease in shrimp eating and floating heads.

The first point is that he will bubble, and this kind of disease is very scary, the second point will be a situation of this infection, saying that it must be paid attention to, and the third point is that there is a high probability of pneumonia, so it must be paid attention to.

The shrimp bounced quickly on the surface of the water a few times, and then lost its balance and sank to the bottom to die; Diseased shrimp molt, soft shell, gills and tail are prone to whitish; Most of them occur downwind; Most ponds eat shrimp normally at the time of illness.

The main manifestations are not eating, sluggishness, weakness in bouncing, no food in the stomach, white spots and redness on the chest armor on the head, lying on the edge of the pool or the bottom of the pool.

Supersaturated nitrogen and oxygen are the main causes of gas pool disease, and other gases dissolved in water include hydrogen and carbon dioxide, but the content is small, and most of the carbon dioxide will combine with calcium salts after entering the blood, so it is not easy to form bubbles to block blood vessels. In Taiwan, the source of most aquaculture is groundwater, if the groundwater (especially at a depth of more than 90 meters) is pumped out and directly introduced into the fish pond, without decompression or aeration, the nitrogen in the groundwater will be quickly released and enter the fish tissues and cause disease. The nitrogen content in the groundwater is not necessarily supersaturated, but is caused by the absence of aeration or decompression.

In addition, the soil in some areas contains a large amount of nitrate compounds, so that the groundwater in the area contains supersaturated nitrogen, and using this groundwater as a source of water for fish ponds is also prone to bubble disease. In spring, it is also easier to accumulate a large amount of nitrogen in the pool water under natural conditions, and the first of these nitrogen is the decomposition of organic matter in the water into free ammonia, which is then converted into nitric acid, then denitrified into nitrite acid, and finally nitrite is decomposed (Warren, 1981). Most of the causes of this disease in ornamental fish are the improper use of pressurized pumps, which are sent into the water with excess gas, so that the gas in the water reaches a saturated state.

Dissolved oxygen oversaturation is common in summer during high water temperatures, and there are too many plankton in the water, and these plants photosynthesize and produce a lot of oxygen when exposed to sunlight. In general, dissolved oxygen saturation above 125% is considered dangerous (but not less than 70%), and if it is higher than 300%, it is fatal.

In my opinion, bubble disease, which should be called body osmosis disorder in academic terms, is due to the sudden rise in temperature or salinity in the aquaculture environment, which leads to a decrease in the solubility of gases (such as oxygen, nitrogen, carbon dioxide, etc.) in the body, resulting in supersaturation of gases, which overflow and accumulate to form fine bubbles, which accumulate and fuse and gradually become larger, slowly hindering the normal nutrient delivery of body tissues, and will cause local muscles to make white turbidity necrosis over time. It glides from muscle to muscle, causing mechanical damage to the muscles, which greatly increases the risk of bacterial infection.

There are many medications used to deal with bubble disease in general. The effect of soluble organic matter concentration in water environment on the solubility of water gas can be reduced by using Shuiweikang (powder potassium bisulfate) and detoxifying green water (polyorganic acid, citric acid). At the same time, baking soda, coarse salt (all 5-10 catties per mu), fully soluble multi-dimensional (500 grams per mu), etc., are used externally to increase the permeability of the internal and external environment of the body, ensure the smooth gas delivery, and eliminate the impact of bubble disease.