Culture techniques of Monopterus Albus in Spring

At present, there are many breeding modes of rice field eel, and the management work in spring is basically the same. Spring management work mainly to release seeds, seed conservation as the center, around improving the survival rate of eel, only in this way can lay the foundation for successful breeding, let's take a look at spring eel breeding technology!

Actively prepare for early seedling release

According to experience, the best economic benefit is to buy eel seeds in early spring and put them on the market around winter or Spring Festival. Eel species are bred early, grow for a long time, and gain a large weight. Therefore, preparations for breeding eel species should be actively carried out, and the specific work is as follows:

1. Clean and tidy around the culture pond, clean up the rotten branches and leaves inside and outside the pond, check whether the water inlet, drain, pond ridge, escape prevention and other facilities are intact, and repair them as soon as possible.

2. Check the overwintering status of eel, remove the old plastic film on the overwintering pool or straw and other insulation materials covered on the mud surface, so as to quickly increase the water temperature.

3. Replant aquatic plants into the pool, plant loofah, lentil and other climbing plants on the mud ridge outside the pool to improve water quality, block summer sunshine and reduce water temperature.

4. Disinfect the culture pond with quicklime before putting eel seeds, and expose the bottom of the pond to the sun.

Pay attention to heat preservation and eat early

Spring temperature gradually rises, the water temperature of the culture pond also rises with the increase of temperature, so it is necessary to feed the eel as soon as possible. But spring often cold air attack, even appear "late spring cold" phenomenon, so that the temperature suddenly dropped sharply, the growth of eel is extremely unfavorable, therefore, heat preservation work can not be relaxed.

The insulation can be covered with plastic film and deepened pool water. In order to prevent sudden change of water temperature, the water depth should be kept 5~6 cm at ordinary times, and the water depth should be kept 10~15 cm the day before the temperature drops to prevent eel from catching cold.

Rational Fertilization and Cultivation of Water Quality

Early spring seedlings, water temperature is low, if the water body is too thin into the box of some weak eel species vulnerable to bacterial invasion, often infected with water mold, white spot disease, rot tail disease. Therefore, it is necessary to pay attention to the cultivation of water quality and keep the water green before seedling release or in the early breeding process.

Cultivate water quality can be changed to green by applying inorganic fertilizers such as ammonium bicarbonate and urea. If organic fertilizers (human and livestock manure) are used, they must be fully fermented before application, otherwise they will aggravate the harm of bacterial diseases.

Pay attention to changing water to prevent pollution

In order to prevent the gradual accumulation of water pollution caused by bait feeding, some new water should be replaced in spring. If you don't pay attention to changing the water, the water quality will deteriorate. As the temperature rises, the amount of water to be changed should be increased continuously, and the specific amount of water to be changed depends on the amount of food consumed and the degree of water pollution.

When the temperature is 15℃, change the water once every 6~7 days, and change the water about 1/4 each time.

When the temperature is 20℃, change the water once every 4~5 days, and change the water about 1/3 each time.

It is advisable to choose sunny days for water change, and it is advisable to start at 8:30 and end at about 12:00. Change water flow slowly, pay attention to temperature difference. For cement pond running water eel cultivation to ensure smooth flow, but the initial flow rate should not be too large, with the rise of temperature, water temperature, but also gradually increase the flow rate, so that feces, dirt and so on with the water discharged out of the pond.

Do a good job of domesticating and feeding at the right time

Monopterus albus stops feeding completely when the water temperature is below 10℃, and begins to feed when the water temperature is above 12℃. Bait can be cast if eel probes are spotted at noon or evening. Early spring timely feeding can promote eel recovery as soon as possible, enhance vitality, improve disease resistance, ensure the survival rate of eel species, lay the foundation for future growth.

The domesticated eel can continue to use the original feed, and the undomesticated eel can be fed fresh feed for about 7 days before domestication. The feeding amount in early spring is 0.5%~1% of the body weight of Monopterus albus, and the feeding amount is gradually increased according to the feeding situation.

Strengthening disinfection to prevent eel disease

Once eel disease, the treatment effect is often not ideal, so we should adhere to the principle of "prevention first, prevention and control combined", the specific measures to prevent eel disease are as follows:

1, do a good job of seedling selection, pool disinfection, water disinfection, eel disinfection, eel insect repellent, etc.

2, do a good job in spring water purification work, from time to time in the bait to add some pesticides and antibiotics.

3. Sprinkle the whole pool with 1 mg/L bleaching powder solution to purify the water quality.