CATDOLL : CATDOLL: Why is the body of the white shrimp red? Here's how to solve it

1. What is the reason why the body of white shrimp turns red? How to solve it

It could be red body disease, red leg disease, or stress red body.

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(1) Red bodies, swimming in ponds, soft shells, and death (toxic red bodies) are caused by poisoning by toxic substances such as ammonia nitrogen and nitrite.

(2)

Due to viral infection, shrimps may become erythroblastic and die, such as Taura virus disease and white spot syndrome (viral erythroblastic). The early symptoms are: shrimp groups often swim in circles, with no obvious changes in the shrimp bodies, only the tail

The shrimp fan has blue spots or a small number of tiny white spots; the liver and heart cannot be distinguished by the naked eye (normal shrimp can distinguish the liver and heart by the naked eye), and only the hepatopancreas is enlarged or light red; 2-3 days after infection, the shrimp

The appetite increases sharply, the large tentacles turn red, and the muscles tend to become turbid. The late symptoms are: red whiskers, red tail, soft shell (the difference from the soft-skinned shrimp that has just shed its shell is that the forehead of this diseased shrimp is still hard), the body color turns tea red, and the diseased shrimp does not eat

It eats only a small amount of food, swims slowly on the water surface, and dies after being taken out of the water.

(3)

Due to bacterial infection, some shrimps turn red and die (bacterial erythrosomes). The disease is mainly manifested by reddening of the appendages, especially the swimming feet, which is usually called "red leg disease". The diseased shrimps have reduced activity and are not very active in the pond.

The shrimps are swimming slowly on the water surface or sinking to the bottom without moving. Sometimes they swim in a rotation or vertical movement. They are slow to react and have a loss of appetite or stop eating. The gills of the diseased shrimps are light yellow, the shells are hardened, the liver and pancreas are not obviously mutated, there are no black spots on the body, and the blood is not

The blood fluid becomes thinner, the number of blood cells decreases, and it coagulates slowly or not at all.

(4)

Stress erythrodysesthesia (stress erythrodysesthesia) caused by stress response. When various physical and chemical factors in the water environment change suddenly (especially water temperature, salinity, and pH value), the shrimp will show red tentacles, red tip of the tail fan, or sometimes

Fishing, pesticide application and other work will also make its tentacles, tail fan and even appendages red. This is a common phenomenon of shrimps to adapt to environmental changes. We call it: stress red body. This phenomenon will disappear in a short time with the water.

But it is worth noting that during the stress period, the disease resistance of shrimp drops sharply, and it is easy to be attacked by bacteria, viruses or harmful organisms, causing secondary bacterial, viral and other diseases.

Treatment ideas: As a first step, it is recommended to use vitamin C (500 grams per acre/meter of water) and sprinkle ginger (1 bag per acre/meter) for anti-stress treatment.

The second step is to use the bottom purification particles to improve the bottom. The dosage of the bottom purification particles containing 10% potassium persulfate is 200g-250g per mu. The third step is to use the mild disinfectant povidone iodine for slight disinfection. The dosage is 250ml per mu/meter of water. The fourth step is oral administration: 1 pack of Banhuang powder + 1 pack of Dijincao powder, mixed with 20 catties of feed

Zhixuechangguikang, mixed with feed and taken internally, will be effective in three days. It is made by Saiyouyu and has good quality.

Hemostatic Changguikang, mixed with feed and taken orally, once a day, for three consecutive days, it is good.

2. How to solve the problem of red tail and red whiskers of shrimp?

The red-bearded and red-tailed white shrimp of South America can basically be divided into three types:

One is the red body disease caused by Taura virus: the red beards and tails of the diseased shrimps, and even the whole shrimp body turns tea red. The diseased shrimps basically do not eat, have empty stomachs, soft shells, swim slowly on the water surface, and die after being taken out of the water. The carapace and muscles of some diseased shrimps are easily separated, and there are irregular black spots on the carapaces of diseased shrimps that have not been cured for a long time. The course of diseased shrimps is very short after they become ill. It only takes 5-7 days from the discovery of the diseased shrimps to the refusal of the diseased shrimps to eat, and then they turn to a large number of deaths. Usually, the symptoms are alleviated in about 10 days, and they turn to the chronic death stage, and dead shrimps are found from time to time. Generally, adult shrimps are prone to acute infection and have a high mortality rate, while young shrimps are prone to chronic infection and have a relatively low mortality rate. Its control measures mainly use beneficial microorganisms to regulate water quality, while feeding shrimps antiviral drugs, biological enzymes, vitamins, and spraying detoxification and anti-stress drugs throughout the pond.

The second is red body disease caused by Vibrio parahaemolyticus: the appendages of the diseased shrimp turn red, the shell becomes hard, the gills of the cephalothorax turn yellow or light red, the color of the hepatopancreas and heart becomes lighter, the hepatopancreas shrinks and erodes, and the diseased shrimp cannot control the direction of swimming. Usually, the diseased shrimp with weak constitutions begin to die a few hours after the onset of the disease, and the mortality rate is as high as 90%. The control measures are to disinfect the whole pond (the number of shrimp deaths will increase on the second and third days after disinfection, but will gradually decrease afterwards), spray the whole pond with detoxification drugs after an interval of 2-3 days, and feed antibiotics and biological enzymes at the same time.

The third is red body caused by stress: mainly caused by weather changes or sudden changes in water quality. The treatment method for this red body disease is to enhance the shrimp's ability to resist stress and disease when the weather changes or the water quality changes suddenly (you can spray vitamins or glucose throughout the pond), otherwise it is easy to cause bacterial and viral infections.

3. The white shrimp is dead and its legs and tail are gone! It is also red, like it is cooked!

The reason shrimps turn red after death is because they belong to the class Crustacea and they have astaxanthin in their bodies.

The main component of the pigment contained in this type of animal. The body color of living crustaceans varies depending on the species and the environment, but no matter what color the living shrimp is, it will turn red as long as it is soaked in formaldehyde or heated.

This is because the pigment protein in the organism denatures when heated, and the pigment originally bound to the protein "escapes" and appears red. In addition, after death, shrimps and crabs will also turn their shells red due to protein denaturation and pigment escape.

The tail and legs are gone. The tail may be the first part to rot or fall off after the shrimp dies.

Some shrimps will also eat freshly dead shrimps, and the legs and feet are most likely to be eaten first because other parts are not easy to bite.

4. The body length of the white shrimp fry is about 2 cm, and the tentacles are red. What's going on? How to deal with it?

Stress

Stress... take anti-stress medicine...

Prevention and treatment methods for black gill disease, yellow gill disease, blue gill disease and gill rot disease of white shrimp

Symptoms: The color of the shrimp's gills changes from red or brown to yellow, black or blue, or the gills swell. In severe cases, the gill filaments atrophy, erode and necrotize, and the diseased shrimp have difficulty breathing, leading to death.

Cause 1. Toxic blackening: The aquaculture water is polluted by chemical substances, especially heavy metal ions such as copper, cadmium, mercury, manganese, etc. The concentrations of ammonia nitrogen and nitrite are too high, the pH value is low for a long time, and chronic poisoning causes blackening.

Countermeasures: Check water quality regularly, use clean water sources, and regularly use Detox Super Shuang or Water Purifier (1 bottle for 2 acres.m) to degrade heavy metals and toxic and harmful chemicals. At the same time, mix Qingyuan, Jianchangling, and Golden Vitamin C with feed for oral administration, and feed continuously for 3 days, 2 meals a day.

Reason 2. Drug-induced melanosis: It is caused by improper use of drugs, such as excessive dosage of potassium permanganate and copper sulfate. The drugs adhere to the surface of the gill filaments of the white shrimp, damaging the gill filaments and causing melanosis.

Countermeasures: Avoid using such drugs, or increase water changes after use, and do not use excessive amounts. Use Detoxification Super Shuang or Water Purifier (1 bottle for 2 acres. meters) to detoxify in time after changing the water. At the same time, mix Qingyuan (at 1%) and Jianchangling with feed for oral administration, and feed continuously for 3 days, 2 meals a day.

Reason 3. Nutritional melanosis: Lack of vitamin C or insufficient vitamin C content in the feed causes the gill filaments to become melanotic. This is a common situation.

Countermeasures: Regularly add Gold Vitamin C, Gold Multivitamin, Gold Peptide Kang and Gold Amino to the feed.

Reason 4. Environmental blackening: Infection by bacteria and fungi (such as Vibrio and filamentous fungi). Deterioration of water quality and bottom quality, high nitrite content, excessive organic pollutants such as silt, organic debris, residual feed, and feces in the aquaculture water, which adhere to the gill filaments of shrimps, often accompanied by fixed ciliates, causing blackening.

Countermeasures: Strengthen water changes, remove sludge from the bottom of the pool, turn on the aerator to increase oxygen, use Biosafe or Green Health Detox (2 mu.m per bottle) first, use Water Purifier to detoxify the next day, and then use Degrading Spirit + Black Gold God (Black Gold God must be soaked for 1 night) to spray the entire pool after 3 hours, and combine with internal use of Green Health Detox, Qingyuan, Golden Vitamin C, Active Garlic Treasure, and Herbal Dakang.

Reason 5. Stress-induced melanization: When encountering storms or continuous rainy days, bad weather, dissolved oxygen, temperature, and salinity stratification will cause a strong stress response. A decrease in shrimp immunity will also cause melanization.

Countermeasures: Pay attention to the weather forecast and do anti-stress work in advance: spray 1 bucket of six-antibiotic algae paste + 1 pack of terilis calcium + 3 packs of degradation spirit in the whole pond of 5 mu.m, and add Qingyuan, Jianchangling, active garlic treasure and Jinpeptidekang to the feed.

Caused by Vibrio

Hypoxia