Ecological Culture Technology of Monopterus Albus in Pond

Pond condition

The aquaculture pond should be built in a place with sufficient water source, good water quality, convenient access and drainage, and Chaoyang ventilation. The area of the pond is generally 5 square meters and the depth is 70 square meters and 100 centimeters. The pond is built in the east-west direction, and the soil at the bottom should be moderately loose and hard. Dig an inlet at the higher end of the pond and leave a drain at the lowest point on the opposite side. The inlet and drain should be covered with a fish net.

In 10-15 days before seeding, 150-200 grams of quicklime or 10-15 grams of bleach were used on each square meter of water surface, and the whole pool of chemical water was sprinkled with disinfection to kill harmful bacteria. Generally clear the pond for disinfection for 7 days and then inject water into the pond with a depth of 10 cm and 20 cm.

Monopterus Albus is suitable for the culture environment of 15 to 30 ℃. Aquatic plants such as hyacinth and duckweed can be planted on the surface of the pond, and pumpkins and lentils can be planted on the edge of the pond to shade.

Eel seedling stocking

Eel seedlings can be collected from the place of origin or purchased from a reputable yellow eel farm. Choose the eel seedlings with strong physique, smooth body surface, no disease or injury, strong movement ability, neat specifications and basically the same size. Generally, the tail weight should be 20g to 30g. If the large size eel weighing 30 to 50 grams per tail is put in, the survival rate is high and the weight gain is fast. The best stocking time is early spring, which can be put together within a week. Generally, 50 million eel seedlings are released per square meter. Soak and disinfect for 10 minutes with a concentration of 3%-4% saline or 10 mg / kg bleach for 10 minutes before stocking, and the water temperature difference should not be too large during stocking.

Feed feeding

The omnivorous fish of Monopterus Albus, which is mainly carnivorous, likes to eat fresh bait, such as small fish and shrimp, snail clam, clam meat, silkworm pupa, earthworm and viscera of livestock and poultry. It should be fed mainly with animal bait, with plant feed with high protein content such as rice bran and bean cake.

Monopterus Albus goes out day and night, and feeding should be carried out in the evening. Monopterus Albus is gluttonous and hunger-tolerant, so attention should be paid to quantitative feeding. Generally, the daily feeding amount is about 5% to 8% of the body weight of Monopterus Albus. The feed must be fresh and put into the table to finish the next morning. When the Monopterus Albus grows fast and the temperature is suitable, it should be invested more and diligently.

Water quality regulation

The water depth of the aquaculture pond should be appropriate, generally 10 to 20 centimeters, the water body is tender green or light brown, there is no oil film on the water surface. In order to ensure the freshness and stability of the water quality, it is necessary to change the water in time in the high temperature season or when the water quality is too strong, so as to be fat, live, tender and cool. Sprinkle quicklime on the whole pool every 10 days, using 1520 kg of water surface of 667 square meters each time. Microbial preparations such as photosynthetic bacteria and Bacillus can be applied every half a month to regulate water quality.

Disease prevention and cure

The prevention of eel disease should be based on ecological prevention, supplemented by drug prevention.

Attention should be paid to pond cleaning and disinfection when building ponds, and fish fry should be washed and disinfected before stocking. Feed should be given at a fixed point, and the residual bait should be removed in time. Tools used in production should be disinfected regularly, 2 or 3 times a week. Chinese herbal medicine contains a large number of flavonoids, alkaloids, organic acids, immune polysaccharides and other substances, which can enhance the immune function of the body and can be used to prevent rice field eel diseases. Therefore, priority should be given to the choice. Such as capillary nematode disease, you can use Guanzhong, Su stem, bitter neem root bark and other Chinese herbal medicine mixture mixed with feed feeding treatment.

At the same time, it is also effective to put several toads in each pool and use their secretions to prevent plum blossom spot disease of ricefield eel.