Control methods of common diseases of grass carp

Grass carp (Ctenopharyngodon idellus) is one of the most important economic freshwater fish species in China. It is very popular in the market because of its delicate meat, large size and few thorns. However, there will be a lot of diseases in grass carp culture, endangering the growth and life of grass carp, and it is also a big loss for grass carp. the following pro-agricultural net brings you the prevention and control of common diseases of grass carp.

1. Rotten gills

Rotten mumps is the most common disease, which is prevalent from July to September and has a long onset period. it is a disease caused by myxococci, when fish gills rot with silt, the inner gills are congested, and there is a small rotten hole in the middle.

Prevention and control methods: caused by germs, so pay attention to disinfection and sterilization, can be prevented and treated with bleach, put bleach in a small bamboo basket, the mouth of the bamboo basket is above the water, remember to change it every day, and you can choose fish rehabilitation A mixed feed to feed.

2. Red skin disease

Red skin disease mainly harms fish fry and adult fish, the disease is caused by Trichoderma fluorescens, when the fish scales fall off, there are large area inflammation symptoms, the fish abdomen is the most obvious, the end of the fin will rot.

Prevention and treatment: first sprinkle disinfection and sterilization with bleach, and then feed the diseased fish with sulfathiazole. pay attention to the dosage, about 1 gram per 10kg, halve the dose after feeding for a day or two, and recover in about a week.

3. Enteritis

Enteritis is an infectious disease caused by Aeromonas aerogenes, which is extremely harmful. It is often found that slow infection can infect entire schools of fish. when the disease occurs, the abdomen of the fish is swollen, and the body surface appears black, especially the head, the intestinal wall of the diseased fish is congested, accompanied by yellow mucus, grass carp lose appetite or do not eat, if not treated in time, it will soon lead to death.

Prevention and treatment: sprinkle with bleach per cubic meter per gram, and feed Yufukang A mixed bait twice a day, and sulfadiazine on the next day, which is also 1 gram per 10kg fish.

4. Hemorrhagic disease

Hemorrhagic disease is caused by reovirus. When the disease occurs, the whole body of the fish is congested, and the muscles, fins, mouth, gills, intestines and stomach are all congested. If you open the skin or gills, you will find that the fish is congested and the Gill is white.

Prevention and treatment methods: when the young fish are vaccinated, the disease can be immunized for more than a year, disinfect with quicklime when the disease occurs, and then feed the fish with Cleo-Yufukang-like bait once a day, which can be cured within a week.

The above are the common disease prevention and control methods of grass carp brought by pro-agricultural network for you. Grass carp diseases are mainly prevention, prevention is more important than treatment. When breeding, we should carefully observe the fish activities and food intake, find the disease and treat the disease in time.