Occurrence and prevention of eel disease

Living in water bodies with complex environmental factors all the year round, they are often attacked by pathogens such as viruses, bacteria and parasites. In the process of raising ricefield eel, its physiological condition is disordered due to sharp change of water temperature, lack of dissolved oxygen, excessive acidity of water, poor feeding and management, such as insufficient food, malnutrition, or feeding rotten and deteriorated feed, and the deterioration of water quality. the body of the eel is weak, the resistance is poor, and serious cases often cause a large number of deaths. Even if it does not die, it will directly affect the growth and development of Monopterus Albus. There are also eels injured due to excessive stocking density or extensive artificial operation. The external environment creates a good breeding place for pathogens, and pathogens take advantage of the deficiency to enter the eel. There are many causes of eel disease, which can be summarized as the result of the interaction between the body and the outside world.

Artificial breeding of ricefield eel should be based on the principle of early prevention without disease, early treatment of disease, and prevention is more important than treatment. In order to do a good job in disease prevention, special personnel should be responsible for the management of eel ponds. The eel should be disinfected in vitro with drugs such as 8 mg / kg potassium permanganate and 2% 3% salt water before the eel was released, and the eel was sprinkled with 50 million grams of raw lime water per square meter. After 5 days and 7 days, the eel species were put into breeding after the drug disappeared. It is necessary to carefully observe the changes of water quality and improve the water environment, depending on the tolerance of eel species and the level of water temperature. If it is found that the activity of ricefield eel is slow in the water body of the pond, if it is uneasy, it should be fished out of the water for observation and make a good record. The infected eel pond should be dissolved in 5 kg water with 10 grams of bleach powder and sprinkled with disinfection. Do a good job in isolating sick eels and put an end to the occurrence and spread of eel disease. If there is a dead eel, dig a pit and bury it deeply, do not litter it, so as to prevent the spread of the disease.