Seed selection and stocking techniques of Monopterus Albus

Seedling stocking is an important part of eel culture and production. In order to do a good job in artificial culture of eel, we should adhere to various channels to solve the source of seedlings, adopt scientific breeding methods, and obtain good yield and better economic benefits.

The source of seedlings

At present, the source of eel mainly depends on collecting or buying natural young eel. In spring, the rising temperature is the best season to catch eel species, and the nocturnal foraging habit of ricefield eel can be used in other seasons. Eel cage trapping and hand catching are the best methods to catch seedlings.

In addition, it is also a good way to collect the fertilized eggs of Monopterus Albus, artificially ovulate and cultivate the seedlings of Monopterus Albus.

Quality of seedlings

Physically strong, disease-free and injury-free can be used as seedlings. Those who are injured with hooks have a low survival rate after stocking and grow quite slowly even if they do not die. Therefore, it is generally not suitable to choose. When catching eel seedlings, don't hurt the eel with wire. If you buy it on the market, you can't buy eel seedlings fed with saccharin or fire soup.

Seedling specification

The seedling specification is generally 20 to 40 per kilogram. The seedlings of this specification are neat, strong vitality, high survival rate, fast weight gain and high yield after stocking. The species size of eel is too small, the feeding ability is poor, the weight gain is not fast, and it can not be profitable in the same year. The stocking seedlings should pay attention to the neat specifications, the size should be consistent, and the disparity should not be too great. The seedlings of different specifications had better be raised separately in the pool, so as not to compete for food and kill each other, affecting the growth and survival rate.

There are many varieties of ricefield eel, which can be divided into yellow, white, green, red and black, among which the green and yellow ones have the strongest vitality, and the yellow ones on the side of the spine and the strong parts are also excellent. In order to ensure the high efficiency of culture production, it is necessary to gradually select the best and eliminate the bad, cultivate and use good varieties in the development of Monopterus Albus culture and production.

Stocking time and stocking density

The stocking time should be early, and it is better to release the seedlings of Monopterus Albus caught in early spring. After overwintering, the nutrition of Monopterus Albus can only maintain its life. After the beginning of spring, it needs a large amount of food and a wide range of food intake. Therefore, it is necessary to release seedlings as early as possible to facilitate domestication, eat early and prolong the growth period.

The stocking density varies with the size of eel pond, feed source, seedling specification, feeding management and so on. The stocking density of artificially cultured ricefield eel can be slightly higher, with 100-150 young eels weighing 25 grams per square meter, that is, 2.5-4 kilograms per square meter. The size of stocking is larger, and the density can be reduced accordingly. On the contrary, it can be increased accordingly. If there is enough bait, you can also put more. Family farming is generally 2.5 kilograms per square meter, and some Loach can be stocked in the pond.