Prevention of diseases in European eel

The main results are as follows: (1) do a good job in water disinfection and adopt effective drugs and methods to kill parasites, viruses and bacteria in water: ① sprinkled Yuchongqing No. 2 with 0.3g / m3 (cubic meter) once every 6 days. To prevent ring disease by killing parasites and eggs in water, ② was sprinkled with 0.2g / m ~ 3 chlorine-rich whole pool once every 6 days to kill viruses and bacteria in water, and ③ was sprinkled with 0.3g / m ~ 3 eel net whole pool once every 6 days. Kill bacteria, fungi and protozoa in water. Note: the above three drugs can be interspersed and should not be used within one day. For example, Yuchongqing No. 2 was used on the first day, rich chlorine on the second day, eel net on the fifth day, Yuchongqing No. 2 on the 7th day, rich chlorine on the 8th day, and eel net on the 11th day. Such repetition can effectively prevent European eel disease.

(2) at present, the bait of Japanese eel is widely used to feed European eel, but there are differences in nutritional requirements between Japanese eel and European eel. According to foreign research data, the protein content of European eel is lower than that of Japanese eel, while the content of carbohydrate and fat is relatively high. The demand for vitamins of European eel is higher than that of Japanese eel, and the demand for mineral elements, especially calcium and phosphorus, is higher than that of Japanese eel. Therefore, feeding European eel with Japanese eel feed will lead to nutritional deficiency, which makes European eel more prone to bacterial and viral diseases. therefore, it is necessary to feed European eel full-price diet or add eel special diet premix to Japanese eel diet to supplement the deficiency of vitamins and trace elements and improve the disease resistance of European eel.