How to treat grass carp hepatobiliary syndrome

Grass carp hepatobiliary syndrome is a kind of nutritional metabolic disorder in the high-density culture mode which is mainly fed with pellet compound feed, which often occurs in summer. So, how to treat grass carp hepatobiliary syndrome?

First, how to treat the liver and gallbladder syndrome of grass carp?

1. Cultivate good water quality and keep it fresh.

2. Choose the feed prepared by reputable professional feed manufacturers, feed it scientifically and raise it reasonably.

3. Keep the bait fresh, prevent protein deterioration and fat oxidation and decomposition, and prevent feed from damp and mildew.

4. Do not add low-dose antimicrobial agents to the feed that are harmful to the liver of fish for a long time, but should use them rationally and use fewer fish drugs with high side effects and high residues.

5. In the process of culture, you should patrol the pond frequently, if you find that there are pathological changes in the liver of fish, add new water in time, and feed the bait made of vitamins and a small amount of rare elements or Chinese herbal medicine, generally for 7 days as a course of treatment, which can effectively prevent the disease.

6. Once it is found that grass carp suffer from hepatobiliary syndrome, feed Sanhuang powder, Banhuang powder and other liver-protecting and cholagogic herbal medicine, or add VC and VE to the feed.

7. Reduce the amount of feed and feed some grass or water plants.

8. Use as few heavy metal ion insecticides as possible, such as copper sulfate, to prevent excessive accumulation in the pond from causing liver damage.

Symptoms of grass carp hepatobiliary syndrome

1. With the rise of temperature, fish begin to enter the peak growing season and have a strong appetite. However, excessive feeding makes it difficult for fish to digest, increasing the burden on the liver and gallbladder. Too high protein diet can easily induce liver fat accumulation, destroy liver function and interfere with normal physiological and biochemical metabolism of fish, while too high carbohydrate content will cause fish glucose metabolism disorder, visceral fat accumulation and hinder normal function. the main lesion site is the liver, a large amount of liver sugar accumulation and fat infiltration, resulting in hepatomegaly, lighter color, no gloss in appearance, and severe fatty liver can also cause liver disease. Fish diseases characterized by hepatobiliary diseases, which make the liver lose its normal function, are collectively referred to as hepatobiliary syndrome.

2. When the grass carp hepatobiliary syndrome is mild, the fish generally have no obvious symptoms, and the color and shape of the fish have no obvious change. Sometimes the edge of the caudal fin has dry white hair, only loss of appetite, weak swimming; sometimes anxious and restless, even darting out of the water; when the disease is serious, the fish body color is black, the color is dark, the fish body has a sense of edema, the scales are loose and easy to fall off, swimming irregularly, lose balance, or rest in the water; loss of appetite, dull reaction, difficulty breathing, or even coma overturned, soon die.

3. Dissection found that the color of the liver changed, showing blotchy, khaki, yellowish brown, etc., the gallbladder became enlarged and the bile became black. In addition, the anti-stress ability of fish is very poor, when fishing or transportation, often cause fish systemic congestion or bleeding, die soon after coming out of the water, or die in transit.

After understanding the liver syndrome of grass carp, we can know that the disease is mainly prevention, and once the disease is found, it needs timely treatment.