Treatment of leeches in Monopterus Albus Culture Pond

Leeches are commonly known as some species of annelid leeches, also known as leeches. In many places, a large number of leeches parasitic on the body surface of Monopterus Albus caused the gradual death of Monopterus Albus, especially in shallow water such as rice fields. In general, the greater the breeding density, the faster the rate of infection, and the number of deaths from less to more and finally a large number of deaths. Because Monopterus Albus is a scaleless fish with rich blood vessels on its body surface, leeches are easy to parasitize. In the investigation, the author found that there is a possibility of parasitic leeches from 5murmur7 cm long eel seedlings to adult eel and parent eel. Therefore, the cultivation of ricefield eel must have a sufficient understanding of the harm of leeches. Do a good job in the prevention and control of leeches. The following points should be done well:

When choosing the waters where Monopterus Albus is farmed, we should investigate in advance whether there are leeches in the waters. If there are many leeches in the waters, filter treatment should be taken when entering the water to prevent the introduction of leeches. Otherwise, it is not suitable to be used as a breeding ground for ricefield eel.

The water body of raising eel, especially the water body of raising eel in rice field, should be cleaned and disinfected thoroughly before planting eel. Generally, about 100 kilograms of quicklime is used for every 667 square meters (1 mu), and after turning the surface mud, the water is soaked in a depth of 10 centimeters for about 10 days, the pH value of the water body can be determined under certain conditions, and the pH value of the pool water can be maintained at 9 for more than 3 days.

Monopterus Albus under the pool before careful inspection, if there are leeches parasitic should be targeted treatment. There are a variety of treatment methods, you can use 2% concentration of salt water for 10 minutes to make the leeches completely fall off from the eel body, but the sick eel is easy to die; you can also use copper sulfate, the dosage is 10 mg / L, soak rice field eel 5 murine for 10 minutes, can make the leech fall off to death, but it must be used reasonably, the method is proper, otherwise it is easy to die eel phenomenon. In addition, can be soaked with vermiculum 2000, generally used concentration of 5 ml (about 5 grams) per ton of water, soaking 6 Murray for 7 hours, leeches can all fall off, 10 milliliters per ton of water generally soak 1 Murray for 2 hours all leeches can fall off. According to the author's practice, vermiculamine 2000 is the safest to use and the effect is excellent, but the disadvantage is that the soaking time is longer and the drug price is higher.

If there are leeches parasitic in the process of rice field eel culture, the best way is to use vermiculum 2000 and sprinkle it all over the pond with 5 ml per ton of water. The second is to catch the leeches that soak the body surface of Monopterus Albus, then sprinkle the whole pond with 10 mg / L copper sulfate to kill the remaining leeches in the pond, and then do semi-sacrificial treatment. sprinkle high concentrations of copper sulfate directly into the pond, with this method there should be deeper caves or aquatic plants in the pool for Monopterus Albus to reach out to the surface or hide. This method will kill part of the rice field eel, it should be weighed and used, and the water should be changed in time.

For those who raise eels for the first time or with poor skills, they should not blindly pursue high density, for example, the yield of raising eels in rice fields should be controlled below 400 kg per 667 square meters, so as to reduce the mutual infection between rice field eels. For the sake of caution, when giving new drugs to Monopterus Albus, a small amount of preparatory medication should be made before administration. To prevent unnecessary losses caused by drugs of the same name and fake drugs.