As the largest immune organ of shrimp, hepatopancreas undertake the functions of detoxification. The normal hepatopancreas is yellowish brown color, and there is a white film under part of the hepatopancreas, which is connected to the stomach through the white film. When the liver is damaged, it will appear swollen, atrophy, and erosion, which will cause the death of the shrimp.

The common hepatopancreatic diseases include hepatopancreatic swollen, atrophy, yellow color, redness and turbidity. In the early stage, effective prevention and treatment can be carried out. Once in the later stage, the hepatopancreas with white, atrophic and erosive, which cannot be treated.

In the seedling stage, hepatopancreas development can be divided into several stages: homogenous stage, transhepatic stage and enveloping stage.

1.Homogenous Stage

2.Transhepatic Stage

The hepatopancreas of the shrimp is the most important period up to 4-6cm, a layer of white membrane gradually appears on the surface of hepatopancreas, and the membrane gradually develops and gradually surrounds the whole posterior edge and bottom of hepatopancreas, which is the maturity sign of hepatopancreas. The shrimp seedlings with 4-6cm are prone to swollen, redness, atrophy and other problems, which is the most important period in the whole process of breeding and disease prevention.

The hepatopancreas cells were not evenly arranged, some or most of them were fatty and oil droplet  by microscope. At this period, we choose hepatopancreas protection drugs, fungus products and polypeptide products to prevent slight liver lesions, to inhibit bacteria and reduce digestion pressure.

3. Enveloping Stage

That's the maturity period with more than 6cm generally. The hepatopancreas is yellow-brown, and there is a white film under part of the hepatopancreas, which is connected to the stomach through the white film. The more healthier of the hepatopancreas is healthy, the faster eating of the shrimp. Due to the longer breeding time, bacterial disease is easily  suffered. The best way is mix immune polysaccharides and bile acids to protect the hepatopancreas and protect the gut.

Shrimp are immaturely developed during the transition period, and the hepatopancreas function is incomplete, and easily damaged. Why bile acids can ensure transition period safe? Because the main role of bile acids is to protect the liver and hepatopancreas of shrimp and promote the development of hepatopancreas, the using of bile acids during this period can promote the regeneration of liver hepatocytes and liver lobules, promote liver and hepatopancreas development, enhance hepatopancreas function, and promote detoxification.