Technical points of small-scale Culture of Monopterus Albus in Courtyard

I. Construction of Monopterus Albus Culture facilities

The main contents are as follows: 1. Choose the open space in front of the house and the courtyard to build the eel pond, and use groundwater or tap water as the source of breeding.

2, the eel pond construction wall is made of single brick, generally each eel pond, the area is 2 square meters (1 meter wide, 2 meters long), the inside and outside of the wall and the bottom surface are covered with cement, the wall is 50 centimeters high, and the upper part of the wall is made into T-shaped to prevent escape. A plastic rubber pipe with a diameter of 10 cm is installed on the wall 30 cm from the bottom of the pool. The bottom of the pool should have a certain slope to the drain, and the drain should be connected with the main drain according to the standard of draining the water in the pool. All the walls and the bottom of the pool below 20 cm from the bottom shall be tiled. The spillway and drain are covered with iron wire and corked tightly when not in use.

3. According to the proportion of 1.5 cubic meters of eel pond for every 10 square meters, the reservoir is built with red brick. The flat corner inside and outside the wall and the bottom of the pool are all covered with cement. Install the outlet pipe at the bottom of the pool. At the same time, the bottom of the pool should have a certain slope, the sewage outlet should be cleaned regularly, and the outlet and sewage outlet should be controlled by valve. The reservoir is required to prevent water leakage and ensure the safety of water supply. The bottom plane of the reservoir should be more than 20 cm higher than that of the culture pond.

II. Five key points of techniques for cultivating ricefield eel in the courtyard

1. After the eel pond is ready to be built, the eel pond is first filled with water. After soaking for 10 days, the pool mouth and environment are disinfected with lime water made of 0.2 kg quicklime per square meter. One month before seedling release, add the pool water to 20 cm deep and soak the tiles to make the tiles grow attached organisms and moss mud to reduce the reflection of the tiles to light. One week before seedling release, some washed and sterilized water peanuts were placed around the pond, and the empty water left in the center of the pond was used as a feeding place for Monopterus Albus. At the same time, several Misgurnus anguillicaudatus and a toad were released in each pond.

2. Generally, eel seedlings can be purchased in the first ten days of April. It is better for eel seedlings to be caught in cage without trauma, requiring lively swimming, strong physique and neat specifications, about 30 pieces per kilogram, and those with great differences in specifications should be stocked in separate ponds. Before stocking, soak the eel seedlings with 3% salt water for about 5 minutes. The appropriate stocking quantity is 5 kg per square meter to ensure that the specifications sold in that year are more than 150 grams.

3. First of all, the daily management is to patrol the pool every morning and evening, find sick and dead eel seedlings and isolate them in time, and diagnose the cause. The second is to closely monitor the change of water quality. In general, the water is changed once a day in 3-5 days in the general season, once a day in the hot season, and generally in the morning. When the water temperature exceeds 28 ℃, the cloth is used to build a shed to shade the sun, which can play an obvious cooling role.

4. When the water temperature is above 18 ℃, Monopterus Albus opens its mouth to feed. However, the eel seedlings raised in the pond have a poor appetite in the first few days and generally do not take the initiative to feed. Its feeding can be domesticated from the 4th day, and the bait can be induced by live earthworms or cut into long strips of 4cm × 1cm × 1cm with fresh clam meat. A few days later, artificial bait can be fed: mixed with an appropriate amount of wheat flour, fish meal, through the meat grinder into a strip bait, cooled into half-dry and then fed. Feed once every evening, and the feeding amount is calculated as 3% of the total weight of eels in the pond. It is generally placed in the empty water in the pool, which is not only easy to observe the feeding situation, but also conducive to the removal of residual bait.

5. adhere to the principle of giving priority to prevention and the combination of prevention and treatment because ricefield eel mainly rely on the sense of smell to find food, its sense of smell is quite developed, it is very sensitive to the peculiar smell containing drugs, there is a peculiar smell in the food, its photographic food intake is obviously reduced, and even refuses to eat. Therefore, drugs can not be used as often as farmed fish to prevent eel disease. However, ecological disease prevention measures can only be taken, such as raising toad credit and Loach in the pond. It is best to use little or no medication.

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