Dactylogyrus is a kind of parasite, which is relatively easy to breed when the water temperature is high. If the number of grass carp in the culture pond is large and relatively dense at this time, it may lead to a large number of grass carp feeding Dactylog, which is relatively harmful. Dactylogyrus will live on the surface of the fish body, at this time the symptoms are increased mucus on the surface of the body, and may appear congestion or bleeding phenomenon; If the dactylogyrus is parasitic on the gills of grass carp, the symptoms may also be the opening of the gill cover of grass carp or the swelling of gill filaments.
In addition to these more obvious symptoms, there are some complications. For example, grass carp become less likely to eat after giving birth to dactylogyrus, become thin, less active, swim slowly, and sometimes cause more serious symptoms such as bleeding and breathing difficulties.
1, medication: grass carp in the above symptoms, the basic can determine the grass carp is raw dactylogyrus. At this time, special drugs should be used for treatment. For example, commonly used drugs such as Lord of the Rings, etc., need to be diluted with sufficient water, generally speaking, the ratio of drugs and water can be controlled at about 1:2000. The dosage needs to be strictly controlled, and the dosage per mu of fish pond is controlled between 50 and 100 milliliters. After medication, there will be a significant improvement. If the symptoms of grass carp Dactylogyrus are very serious, it is recommended to take medicine for two consecutive days.
2, after the prevention: after the cure, also need to do a good job of prevention. For example, disinfectants are used to completely remove insect eggs in water or silt, etc; For example, before putting the fish fry into the aquaculture pond, the aquaculture pond should be thoroughly disinfected.
