How to choose and buy rice field eel seedlings? What are the methods of raising seedlings?

The meat of Monopterus Albus is very delicious, nutritious and medicinal, so it is a popular nourishing aquatic product. In addition, Monopterus Albus has strong vitality, easy to transport, can be fresh on the market, and has a certain market prospect for the development of artificial breeding of Monopterus Albus. At present, the Monopterus Albus breeding industry has developed more mature, so the key work is to do a good job in the early selection and breeding of rice field eel seedlings, so how to choose and purchase rice field eel seedlings? What are the methods of raising seedlings? Let's get to know it.

How to choose and buy rice field eel seedlings?

1. Pay attention to the normality of the rice field eel farm: when purchasing seedlings, it is necessary to check whether the farm is regular and whether the rice field eel seedlings are artificially cultivated. Generally, the seedlings of Monopterus Albus which are domesticated artificially in regular farms have strong stress resistance, high survival rate and fast feed adaptation.

2. Pay attention to the buying season: the best choice for buying rice field eel seedlings is in April, early May or August-October of each year.

3. Pay attention to the varieties of Monopterus Albus seedlings: Monopterus Albus can be divided into three types according to its body color, one of which is yellow on the body surface and mixed with large spots, it has a flesh gain multiple of 1 / 5 / 6 and grows faster, so it is better to use it as a breeding variety.

4. Pay attention to the selection of rice field eel seedlings: choose rice field eel seedlings with symmetrical shape, strong physique, no injury, no disease and consistent specifications.

5. Pay attention to the provenance of rice field eel seedlings: to buy rice field eel seedlings in the market, to find out the source of rice field eel seedlings, never buy electric rice field eels, hooked rice field eels and rice field eel seedlings that are invisible to the naked eye.

6. Pay attention to the appropriate means of transport: the transportation of rice field eel seedlings is also an important link. First, put the rice field eel seedlings that need to be transported into a wooden bucket filled with water, raise them in clean river water for 24 hours, let the rice field eel discharge clean stains, and then transport them by means of water transport or oxygenated transport.

How to raise Monopterus Albus seedlings?

1. Preparation of eel seedling pond

The cultivation pool of rice field eel seedlings should choose the place with sufficient water source, convenient drainage and irrigation, good water quality and no pollution, and it is best to choose a small cement pool. There should be water inlet and overflow outlet in the pool, and an anti-escape net should be used, and about 5 cm of mud should be added to the bottom of the pool. Then inject fresh water to a depth of 10-20 cm. At the same time, some water hyacinth with well-developed fibrous roots can be cultivated on the water surface, and it is better to introduce water (silk) earthworms into the seedling pond.

2. Stocking of eel seedlings

Disinfect the seedling pond and apply base fertilizer before stocking. The eel seedlings selected for stocking must be harmless, disease-free, robust, smooth and golden in color. Generally choose about 80 eel seedlings per kilogram, if the size of eel seedlings is too small, it will affect their feeding and weight gain, can not be harvested in the same year, the size of eel seedlings must be neat, the same size, be sure to keep in mind mixed culture, to prevent self-nibbling. The stocking density is about 100 eel seedlings with 10 grams per square meter. the effect of stocking eel seedlings in early spring is better, which is beneficial to the early feeding of ricefield eel and prolong the growth period.

3. Eel seedling feeding

Monopterus Albus seedlings come from a wide range of feed sources, such as small fish and shrimp, earthworms, animal offal and scraps, snail meat, rice, melon peel, vegetable crumbs and so on. Feeding skills should follow the "four principles" of timing, positioning, quality and quantity. The daily feeding amount is about 6% of the weight of Monopterus Albus, which should be properly adjusted according to the eating situation of Monopterus Albus the day before, so as to have a little surplus after feeding.

4. Daily management

① water quality control: from eel seedlings to eel species, with the increase of individuals, it is necessary to add new water every few days, gradually to a water depth of 13 cm to 16 cm. In hot weather, it is also necessary to add new water as appropriate. Note that the eel seedling pond should not be filled with water at once, but should be carried out step by step.

② adjust water temperature: the water depth of eel seedling pool should be kept at 5-7 cm at ordinary times, and it should be deepened to 10-20 cm in high temperature season in midsummer. At high temperature in summer, melons and vegetables can be planted in a shed beside the eel seedling pond to shade the sun, so that the water volume of the pond should be kept at 25-30 ℃.

③ Scientific Pool Patrol: every morning, noon and evening, the pond should be inspected to observe the activity and growth of eel seedlings, and to remove the residual bait and pollutants in the pond in time. In addition, we should pay attention to weeding and do a good job in the prevention and control of eel disease.

④ timely separate culture: in order to ensure the rapid growth of eel seedlings and avoid self-harm, eel seedlings should be reared twice in the seedling stage. Generally, the density was reduced to 150-200 tails / m2 for the first time after 15 days. After 30 days of feeding, the density was reduced to 100 ~ 120 tails / m2 for the second time.

It is reported that there are many breeders who do not know how to buy seeds, resulting in a low survival rate of Monopterus Albus and serious losses. Therefore, every step of the selection and purchase of rice field eel seedlings should be strictly checked, and after selecting the seedlings, they will follow the traditional breeding process.

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