Diagnosis and Treatment Methods for Grass Carp Diseases Explained
AbstractRed skin disease: When the disease occurs, the fish scales fall off and there is inflammation. The prevention and treatment method is to disinfect and sterilize with bleaching powder and feed sulfathiazole. Enteritis disease: When the disease occurs, the fish abdomen swells, the intestinal wall becomes congested, and appetite decreases. The prevention and treatment method is to disinfect with bleaching powder and feed Yukang Type A mixed into bait. Gill rot disease: When the disease occurs, the fish gills carry silt. The prevention and treatment method is to disinfect with bleaching powder and feed Kang Type A mixed feed. Hemorrhagic disease: When the disease occurs, the whole body of the fish becomes congested. The prevention and treatment method is to inject a vaccine when the fish are fry.
1. Red Skin Disease
1. Symptoms
This disease mainly affects fry and adult fish. It is caused by Pseudomonas fluorescens. When the disease occurs, the fish scales fall off and large areas of inflammation appear. The most obvious area is the fish abdomen, and the ends of the fins also rot.
2. Prevention and Treatment Methods
First, bleaching powder can be splashed to disinfect and sterilize, and then the diseased fish should be fed sulfathiazole. Be sure to pay attention to the dosage: about 1 gram can be used per 10 kg of fish. After feeding for 1-2 [days], the dosage can be halved, and recovery will occur in about one week.
2. Enteritis Disease
1. Symptoms
This disease is mainly an infectious disease caused by Aeromonas bacteria. It is relatively harmful, and it is generally difficult to detect before it infects the entire fish school. When the disease occurs, the fish abdomen swells, the body surface turns black, especially the head, and the intestinal wall of the diseased fish becomes congested and is accompanied by yellow mucus. Grass carp appetite decreases or they stop eating. If treatment is not carried out in time, it can easily lead to death.
2. Prevention and Treatment Methods
Bleaching powder can be splashed to disinfect and sterilize, and then Yukang Type A mixed bait can be fed, twice a day. On the second day, sulfaguanidine can be fed, about 1 gram per 10 kg of fish.
3. Gill Rot Disease
1. Symptoms
This disease is a relatively common disease of grass carp. It generally prevails from July to September, and the disease period is relatively long. It is a disease caused by myxococcus. When the disease occurs, the fish gills rot and carry silt, the epidermis inside the gills becomes congested, and a small rotten hole appears in the middle.
2. Prevention and Treatment Methods
Because it is caused by bacteria, disinfection and sterilization must be carried out. Bleaching powder can be used for prevention and treatment. First, put the bleaching powder into a small bamboo basket, with the basket mouth above the water surface. Be sure to replace it every day, and choose to feed Yukang Type A mixed feed.
4. Hemorrhagic Disease
1. Symptoms
This disease is mainly caused by reovirus. When the disease occurs, the whole body of the fish becomes congested, such as the mouth, gills, intestines and stomach, muscles, and fins. Then, if the skin or gills are opened, the fish flesh will be found to be congested, and the gill filaments turn white.
2. Prevention and Treatment Methods
A vaccine can be injected when the fish are fry, which can provide immunity to this disease for more than one year. When the disease occurs, quicklime can be splashed for disinfection, and then the fish can be fed Cleo-Yufukang general bait, once a day, and recovery can occur in about one week.