How to prevent and treat shrimp hepatopancreatic necrosis disease in the hot season?
During the hot season, attention should be paid to the prevention and treatment of shrimp hepatopancreatic necrosis disease
(Agricultural Wealth Network) With the arrival of high temperatures, shrimp enter a stage of rapid growth, and at the same time various harmful bacteria and organic pollutants in the shrimp pond increase more and more. At this time the shrimp's liver bears a great detoxification burden, transforming and detoxifying various toxic substances. Coupled with the massive growth and reproduction of harmful bacteria, the shrimp's liver is invaded and infected to varying degrees. For example, the shrimp liver becomes swollen and turns white, and even severely shrinks and becomes eroded, and so on. If we do not discover it quickly, by the time the liver lesions become obvious, the losses are generally quite severe.
Comparison of normal and abnormal livers
A normal liver is yellow-brown, with a white membrane beneath part of it; an abnormal one turns red or black, swells, or shrinks and becomes eroded. The liver tissue is soft and lacks elasticity. Under the microscope, the liver cells are unevenly arranged, with some or most of them fatty.
Causes of shrimp liver disease
During high temperatures, the pond water of the shrimp pond changes greatly with temperature, the shrimp grow fast and eat more feed, so organic matter accumulates in the pond, pathogens reproduce quickly, and the shrimp's resistance declines, resulting in pathogen infection and causing liver disease. At the beginning of the disease, the shrimp feed and move normally, then growth gradually slows down, and they do not molt for a long time; after a certain period, the disease appears.
Principles of preventing and treating shrimp liver disease
Because many drugs are broken down and transformed through the shrimp's liver, when treating or preventing shrimp liver disease, you must choose drugs that have little effect on the liver.
Treatment of shrimp liver disease
1. Use Chidiqing at 5-6 mu per bag, spread it directly dry to treat the polluted bottom sediment of the pond, then use Bacillus culture liquid (when the water color is too dense) to purify the water quality and transform and break down harmful substances.
2. Soak Jinfang Huganbao (200 jin of feed per bag) and Weimian (400 jin of feed per bag) for 2-3 hours, then evenly spray onto the surface of the feed, then seal the feed and leave it for several hours before feeding. This can effectively treat liver disease, and the drug ingredients are also fully utilized. Feed continuously for 5-7 days. In severe cases, you can dissolve Weimian (2 mu per bag) or Jinfang Huganbao (1 mu per bag) in water, soak for 2 hours, and evenly splash it over the whole pond; the effect is also quite good.
3. If the shrimp's liver necrosis is relatively severe and the shrimp are not eating much at this time, oral administration often has poor results. You can directly dissolve Jinfang Huganbao in water at 2 mu/bag and splash it, using it 1-2 times in a row, which can effectively and quickly restore the shrimp's liver and reduce the mortality rate.
The shrimp's liver is one of the most important detoxifying organs, so during high-temperature farming we must attach great importance to shrimp liver prevention. It is recommended to use beneficial microorganisms such as Bacillus cultures, freeze-dried Youluo bacteria, Chidiqing, Diju Sujiean, etc. once every 10 to 15 days to purify the pond water and bottom sediment, combined with oral use of Jinfang Huganbao, Weimian, Jinweian, etc.
Comparison of normal and abnormal livers
A normal liver is yellow-brown, with a white membrane beneath part of it; an abnormal one turns red or black, swells, or shrinks and becomes eroded. The liver tissue is soft and lacks elasticity. Under the microscope, the liver cells are unevenly arranged, with some or most of them fatty.
Causes of shrimp liver disease
During high temperatures, the pond water of the shrimp pond changes greatly with temperature, the shrimp grow fast and eat more feed, so organic matter accumulates in the pond, pathogens reproduce quickly, and the shrimp's resistance declines, resulting in pathogen infection and causing liver disease. At the beginning of the disease, the shrimp feed and move normally, then growth gradually slows down, and they do not molt for a long time; after a certain period, the disease appears.
Principles of preventing and treating shrimp liver disease
Because many drugs are broken down and transformed through the shrimp's liver, when treating or preventing shrimp liver disease, you must choose drugs that have little effect on the liver.
Treatment of shrimp liver disease
1. Use Chidiqing at 5-6 mu per bag, spread it directly dry to treat the polluted bottom sediment of the pond, then use Bacillus culture liquid (when the water color is too dense) to purify the water quality and transform and break down harmful substances.
2. Soak Jinfang Huganbao (200 jin of feed per bag) and Weimian (400 jin of feed per bag) for 2-3 hours, then evenly spray onto the surface of the feed, then seal the feed and leave it for several hours before feeding. This can effectively treat liver disease, and the drug ingredients are also fully utilized. Feed continuously for 5-7 days. In severe cases, you can dissolve Weimian (2 mu per bag) or Jinfang Huganbao (1 mu per bag) in water, soak for 2 hours, and evenly splash it over the whole pond; the effect is also quite good.
3. If the shrimp's liver necrosis is relatively severe and the shrimp are not eating much at this time, oral administration often has poor results. You can directly dissolve Jinfang Huganbao in water at 2 mu/bag and splash it, using it 1-2 times in a row, which can effectively and quickly restore the shrimp's liver and reduce the mortality rate.
The shrimp's liver is one of the most important detoxifying organs, so during high-temperature farming we must attach great importance to shrimp liver prevention. It is recommended to use beneficial microorganisms such as Bacillus cultures, freeze-dried Youluo bacteria, Chidiqing, Diju Sujiean, etc. once every 10 to 15 days to purify the pond water and bottom sediment, combined with oral use of Jinfang Huganbao, Weimian, Jinweian, etc.