Diagnosis and treatment of grass carp disease

Red skin disease: when the disease occurs, the fish scales will fall off and be accompanied by inflammation, and the prevention and treatment is to disinfect and sterilize with bleach and feed sulfathiazole. Enteritis: when the disease occurs, the abdomen of the fish is swollen, the intestinal wall is congested and the appetite decreases. The prevention and treatment method is to disinfect with bleach and feed Yukang A-type mixed bait. Gill rot disease: the fish gills will carry silt when it comes on. The prevention and treatment method is to disinfect with bleach and feed Kang A mixed feed. Hemorrhagic disease: when the disease occurs, the whole body of the fish is congested, and the prevention and treatment method is to inject the vaccine when the young fish are young.

1. Red skin disease

1. Illness

The disease is mainly harmful to fish fry and adult fish, the disease is caused by Trichoderma fluorescens, the scales of the fish will fall off, and there will be a large area of inflammation, the belly of the fish is the most obvious, and the end of the fin will rot.

2. Prevention and control methods

First of all, bleach can be used to sprinkle for disinfection and sterilization, and then feed diseased fish with sulfathiazole. you must pay attention to the dosage. About 1 gram of medicine can be used for every 10 kilograms of fish, and the dosage can be halved after feeding 1-2. It will be cured in about a week.

2. Enteritis

1. Illness

The disease is mainly an infectious disease caused by Aeromonas aerogenes, which is relatively harmful, and it is generally difficult to find that it will infect the whole school of fish. when the disease occurs, the abdomen of the fish will be swollen, and the body surface will appear black, especially the head, the intestinal wall of the diseased fish is congested, and it is accompanied by yellow mucus. Grass carp lose appetite or do not eat, if not treated in time, it is easy to lead to death.

2. Prevention and control methods

You can use bleach to disinfect and sterilize, and then feed Yukang A-type mixed bait twice a day, and sulfonamide guanidine can be fed the next day, about 1 gram for every 10 kg of fish.

Third, rotten gills

1. Illness

The disease is a common disease of grass carp, generally prevalent from July to September, the disease period is relatively long, is a disease caused by myxococcus, the disease Gill will rot and with silt, gills inside the epidermis hyperemia, there will be a small decaying hole in the middle.

2. Prevention and control methods

Because it is caused by germs, it must be disinfected and sterilized, and bleach can be used for prevention and treatment. first, the bleach is put into a small bamboo basket, and the mouth of the bamboo basket is above the water surface. Be sure to change it every day, and you can choose to feed Yukang A mixed feed.

IV. Hemorrhagic disease

1. Illness

The disease is mainly caused by reovirus. When the disease occurs, the whole body of the fish will be congested, such as the mouth, gills, intestines and stomach, muscles, fins, etc., and then open the skin or Gill, you will find that the fish flesh is congested and the Gill is white.

2. Prevention and control methods

Can be vaccinated when young fish, can be immune to the disease for more than a year, in the onset of the disease can be sprinkled with quicklime for disinfection, and then feed the fish Cleo-Yu Fukang-like bait, once a day, about a week or so can be cured.