Culture technique of Loach in courtyard

Using the free land in front and back of the house to cultivate Loach has the advantages of small area, easy breeding and high income, and it is a new way for farmers to get rich. Generally use the water surface 100m2-200m2, can produce 200kg-400kg Loach annually, the income can reach 800yuan-2000 yuan, the benefit is optimistic, how to raise Loach?

Site selection for pool construction

Choose the place where the leeward is facing the sun, the water source is reliable, the environment is clean and the management is convenient. The size of the pool can be adjusted to local conditions, the depth of the pool is about one meter, and the depth of water in the pool is about 0.5 meters. The bottom of the pool should be covered with 0.2-0.3 meters of fat mud for Loach drilling and rest, the pool wall is made of stones or bricks, and coated with cement. Loach pond should also build a special inlet, in the inlet and outlet should be set up barbed wire to prevent its escape, but also played a role in preventing the entry of wild fish.

Pool cleaning and disinfection

Dry pool method: drain or drain the pool water, disinfect the pool bottom with 0.11 kg of quicklime per square meter, and irrigate the day after disinfection.

Water method: 0.22 kg quicklime per cubic meter of pool water. The method of applying quicklime is to sprinkle the quicklime pulp evenly in the whole pool while it is hot, and then put it into Loach after the toxicity of quicklime disappears.

Free-range Loach species

Artificial breeding or wild Loach species can be raised, Loach species should be injury-free, disease-free, healthy and lively. Before stocking, soak it in a salt solution of 3% Laurel 4% for about 8 minutes, and the stocking time is suitable on a sunny day in spring. 40-50 Loach species of 3 cm-4 cm per square meter are reared for 140-150 days. When the Loach grows to 10 cm-15 cm long, it can be sold as a commercial Loach.

Reasonable bait

Misgurnus anguillicaudatus is an omnivorous fish. in the process of feeding, Misgurnus anguillicaudatus can be fed with appropriate animal feed such as snail, earthworm, silkworm pupa powder and animal offal, as well as plant bait such as bean cake, distiller's grains and stems, leaves and seeds of young plants. The proportion of daily feeding to the total amount of Loach is 1% in March, 4% in April-June, 10% in July-August, and 4% in September-October. Bait should adhere to the four fixed: positioning, setting up the bait table in the pool, putting the bait on the bait table; regular bait, about 9 am every morning; quality, bait should be fresh, hygienic, palatable, no rot and mildew; quantitative, it is appropriate to eat 2 hours-3 hours after feeding, if there is leftover bait after 3 hours, Loach may be swollen to death. In autumn and winter every year, when the water temperature drops to 8 ℃, the Loach enters the hibernating period, during which the water depth of the pond should be kept at 80 cm-90 cm, and an appropriate amount of organic fertilizer such as pig and cow dung should be put around the pond, which can not only fertilize the water but also increase the temperature by fermentation, which is conducive to the safe overwintering of the Loach.

Change water at the right time

In the process of feeding, the changes of pool water quality should be observed frequently, and the general water quality should be yellow or tea-brown. If Misgurnus anguillicaudatus is found to be out of the water, it means that the pool water is too fat and there is no oxygen in the water, so we should release the old water and inject new water in time. Especially in muggy or thunderstorm weather, pay more attention to frequent injection of new water and timely increase of oxygen. Conditional aerator can also be installed to increase oxygen to prevent the death of Loach.

Prevention and control of diseases

The common diseases are water mold and rotten fin disease. You can use 10 μ g-15 μ g / ml antibiotic solution to bathe the Loach for 10 minutes, or use 1 mg / L bleach (containing 25% available chlorine 30%) to sprinkle the whole pool. The common parasites of Misgurnus anguillicaudatus are rotifer, cup worm, third generation worm and so on. These parasites on Loach seedlings will cause the death of Loach, and the diseased fish will appear symptoms such as increased body surface mucus, wandering alone, floating on the surface, loss of appetite and so on. At this time, the body surface mucus of diseased fish should be examined microscopically. About 50 rotifers or cup worms can be observed under low power microscope, which can be sprinkled with 0.7 mg / L copper sulfate. If there are only 3-5 third-generation worms, they can be sprinkled with 0.5 mg / L crystal trichlorfon.