Prevention and treatment of grass carp enteritis caused by enteritis

The outbreak of epidemic enteritis of grass carp can also be complicated with bleeding and red skin disease. if not treated in time, it can cause a large number of deaths and cause huge losses to farmers. The following is a brief description of the causes of the disease, symptom prevention, treatment and suggestions.

Grass carp

First, reasons

The Beginning of Summer later, when the water temperature exceeded 24 ℃, fed large amounts of unsterilized aquatic plants or inferior feed to grass carp, which was easy to suffer from the disease. Therefore, when dead fish are found, they should be carefully examined and diagnosed as soon as possible. At the same time, high-quality feed should be selected and fed moderately, and the aquatic plants should be disinfected.

Second, symptoms

The diseased fish had redness and swelling outside the anus, dilated belly, hydrops in the abdominal cavity, light pressure on the abdomen, flow of light yellow fluid from the anus, dissection of the fish body, and found that the liver was slightly white, the intestinal wall vessels were congested, the mucous membrane fell off, and the fish intestines were broken one by one, and there was no food in the intestines. In addition, the base of the pectoral fin, abdomen, orbit and other areas around the congestion. Fin decay, decay where the scales fall off, and symptoms of water mold. Comprehensive diagnosis: mainly bacterial enteritis, and send out blood disease and red skin disease.

III. Prevention

In barley yellow or when eating, use chopped vegetables and garlic to mash and mix into erbium to feed. Methods: 100 kg feed was mixed with 3 kg of garlic and 0.3 kg of salt.

IV. Treatment

On the first day, the whole pool was sprinkled with insecticide. (avermectin, quick-acting carbendazim, etc.)

From the next day, feed the bait for 10 days: at the same time, sprinkle the whole pool with disinfectant for 5 days. Bait production process: for every 100 kg of bait, 150 grams of norfloxacin for fish, 300 grams of Huganbao and 75 grams of vitamin C are added to the bait. Put these three drugs into the adhesive, adjust them into paste with an appropriate amount of water, mix them into the feed, stir evenly, and air-dry in a cool place, and then feed them. Because vitamin C decomposes at high temperature, it is stirred with cold water and should not be exposed to strong light.

Note: during the onset of illness and medication, do not pull the net fishing, do not change a lot of water, do not apply inorganic nitrogen fertilizer and quicklime. In principle, it is to maintain the stability of the pond water, so that the fish can treat diseases quietly, otherwise grass carp will have a strong stress reaction, which will increase the concentration of ammonia nitrogen in the pond water, aggravate the toxicity, aggravate the disease and cause a large number of dead fish.