Etiology and key prevention and treatment techniques of liver disease in shrimp

(agricultural Wealth Network) since June, with the middle and later stages of shrimp culture, there are more and more harmful substances and organic matter in the pond. Shrimp liver undertakes a greater task of detoxification, decomposing and metabolizing all kinds of toxic substances. Coupled with the invasion of some harmful bacteria, some problems will inevitably occur in the liver of shrimp. Such as fatty liver, hepatomegaly, liver whitening, liver redness and swelling, liver atrophy, liver erosion and other symptoms, if not prevented and treated as soon as possible, once complicated with other diseases, often suffer heavy losses. Through several years of clinical research, we have been able to control the liver disease of shrimp, and the relevant knowledge is introduced as follows.

1. Basic knowledge of shrimp liver

Shrimp liver is located in the upper part of the stomach, divided into left and right lobes and attached to the upper part of the stomach. Under normal circumstances, the color is yellowish brown, full and elastic.

2. Abnormal manifestation of liver.

Show white turbid color, there is branched melanin distribution, or light red, red, black, swelling or atrophy erosion, soft tissue, lack of elasticity. When the liver cells were examined under the microscope, it was found that the cells were not evenly arranged, of different sizes, and most of the cells were steatoid degeneration.

3. The cause of liver disease.

Shrimp are more prone to liver disease after 30 days, mainly due to the deterioration of the water environment in the middle and later stages of culture, the increase of toxic substances in the water, and the addition of some drugs that are harmful to the liver in the feed, resulting in an increased burden on the liver. at this time, some bacteria take advantage of the opportunity to cause liver disease. In the early stage of the disease, shrimp feeding and activities are relatively normal, but the growth is very slow, do not shell for a long time, once complicated with other diseases, often suffer heavy losses.

4. key techniques for prevention and treatment of liver diseases.

As many drugs have to be decomposed and metabolized through the liver, drugs must be carefully selected when treating liver diseases. In addition, the liver needs more B and C vitamins, so it should be supplemented.

① liver disease prevention method: regularly use detoxification stress essence to reduce the liver damage caused by heavy metal ions, phycotoxins, bacterial toxins and other toxic substances. Oral administration of Jinfang Huganbao and Jinweian mixture for 10 days every month to reduce the burden on the liver.

Treatment of ② liver disease: after soaking in Jinwei'an (6 mu rice per bag) and water for 2 hours, sprinkle the whole pool with water to replenish the amino groups of the water body to inhibit the bacteria in the water body. The next day, the whole pond was sprinkled to decompose the toxic substances in the water after being diluted by Shuiyuebao. At the same time, oral administration of Jinfang Huganbao + Weiming + multi-effect anti-toxin + Pule, continuous feeding of 3murine for 5 days can eliminate some symptoms of the liver and make the shrimp return to normal. In addition, for some shrimp seedlings with liver problems, you can directly use Jinfang Hugan Bao (each bag of 2 mu meters) once a day for two days.

To sum up, the liver is an important detoxification organ of shrimp, so we must pay attention to the prevention of shrimp liver disease, and it is recommended to detoxify the water once a month. at the same time, adhere to the use of water ecological treasure, nitrification No. 1, aquaporin and other microecological agents to degrade too much organic matter in the pond water. Regular addition of Jin Fang Hugan Bao, Duoxiang Kangdu and Jin Wei'an in the feed can effectively help shrimp repair damaged liver cells and maintain the health of shrimp liver.