The high temperature alternates with the rainy season, the weather is changeable, and recently many farmers and friends have reflected: "Why does my grass carp start rotting gills at this time of year?" When it is serious, it is not cured, and many dead people are still three or four pounds of big fish. ”。
During periods of high gill disease, most antibiotics do not work well or effectively. Gill rot can be divided into bacterial gill rot, fungal gill rot and parasitic gill rot. The cause is different, and the medication is also different. Many farmers can not distinguish what the situation is, often the disease is rushed to the doctor, fungicides, insecticides, disinfectants and other indiscriminate use, often resulting in the fish physique is more weak, and serious liver and gallbladder problems, accelerated death.
How to distinguish which case
1. For gill rot caused by bacteria, the gill cover opens the skylight, that is, the epidermis inside the gill cover is corroded into a translucent window.
2. Fungal gill rot disease is gill mold disease, and the gills are pale or moldy. The examination should be carried out with fewer gill filaments than rotting and the presence of gill hyphae under a microscope.
3. Rotten gills caused by parasites, gill flaps are hyperemic, mucus is abundant, gill filaments are often missing, and often secondary to bacterial infection.
