How to raise eels

At present, the main supply of Monopterus albus in the market comes from wild fishing, and there are also a certain number of wild Monopterus albus raised out of season, which is very limited. Therefore, the prospect of artificial culture of Monopterus albus is quite good. This paper introduces how to raise Monopterus albus, which has good benefits, low risk, high survival rate, easy raising and catching, and less diseases. A new method of raising eels artificially. This farming method has the advantages of less land occupation, high economic degree, low cost, high benefit, easy observation and easy wintering, and is deeply loved by the majority of fish farmers, which has found a feasible way for fish farmers to get rid of poverty and become rich.

First of all, the setting of the cage

Net cage area1.5 ~ 20m2. The cage is fixed in water with bamboo, and the box is kept 0.5 meters above the water surface. The new cage was put in 5 ~ 7 days before the eel species were put in, so that a "biofilm" composed of filamentous algae was formed in the cage to avoid the friction injury of eel species. Aquatic plants such as water peanuts, water hyacinths and oil weeds are placed in the cage, and the dosage is 2/3 ~ 4/5 of the cage area, so that Monopterus albus can inhabit and purify the water quality. In order to facilitate feeding and check the feeding situation of Monopterus albus, each cage needs a feeding table. The dining table is a box with a height of 10 cm and a side length of 35 ~ 45 cm. The bottom and periphery of the box are surrounded by silk screens and fixed in a cage 30 cm below the water. The row spacing of cages is 1.5 ~ 2 meters, and the cages are covered with black sun-shading nets in high temperature period in summer.

2. Selection of Monopterus albus fry

The quality of eel species and the cultivation of eel fry are the key points. At present, Monopterus albus is mainly caught by cages (baskets) and hooks. Monopterus albus caught in cages (baskets) can be stored except those with scratches on their bodies. The hooked Huangshan Mountain is seriously injured and generally should not be stored. You should choose a person with strong body, no trauma, no lesions, strong mobility and normal mucus secretion. Local varieties such as deep yellow and red eel should be selected. The suitable specification of Monopterus albus seedlings is 30-60 per kilogram. The stocking density of cage culture is generally 1- 1.5 kg per square meter.

Third, stock trading.

Generally, the stocking time is April-May or July-August, and the eel species should be caught in cages, with strong physique, no trauma and bright body color, the specification is 25- 100g/ tail, and the stocking density is 1- 1.5kg/m2. Soak in 3-5% salt solution or potassium permanganate solution for disinfection 10- 15 minutes before stocking. Eels kept in each cage should have the same specifications, so as not to kill each other because of too great a difference.

Fourth, feed.

Monopterus albus seedlings were not fed for 1-3 days after they were put into cages. Feed should be fed from the 4th17th day, and it is best to feed at 6-7 o'clock every night. At this time, the feed intake of Monopterus albus is the highest, and the feed for Monopterus albus raised in artificial cages is mainly compound feed, and some earthworms, snails and small miscellaneous fish are appropriately fed. Feed is directly put into aquatic plants in cages for eels to eat, and the compound feed can be Dajiang brand eel complete feed or Changjiang brand eel compound feed. It can also be prepared by itself, and the formula is: fish meal 2 1%, cake meal 19%, energy feed 37%, earthworm powder 12%, minerals 1%, parent material 5%, multivitamins 2%, adhesive 3%, and artificially cultured Monopterus albus.

Verb (abbreviation of verb) feeding management

Monopterus albus can be domesticated 10 ~ 20 days after entering the pond, which can form the feeding habit of Monopterus albus during the day. Feeding shall be carried out according to the principle of "four determinations". Positioning, 2 ~ 3 feed points per 100 square meter; Feed twice a day at regular intervals when the water temperature is 20℃ ~ 28℃, at 9: 00 am, at 2 ~ 3: 00 pm, at 15℃ ~ 20℃ or at 28℃ ~ 32℃ in the afternoon; Quantization should be controlled flexibly. The daily food intake is about 3% of the total weight of Monopterus albus at 15℃, 6% ~ 10% at 15℃ ~ 20℃, and 10% ~ 20% at 20℃ ~ 28℃, which is more than. Qualitative requirements bait fresh, not bad.

VI. Disease Prevention and Control

There are many diseases in the artificial culture of Monopterus albus, and the prevention of diseases is the main one, so is the cage culture of Monopterus albus. During the breeding period, every 10- 15 days, spray 1ppmm bleaching powder in the whole pond. When eel disease begins to occur, measures should be taken to treat it in time.

The above introduction is a relatively simple and novel cage culture method of Monopterus albus, which has the advantages of fast growth, high yield, easy cultivation and catching, and high efficiency.