1, pond conditions
At present, farmed loach is mostly cultivated in cement ponds. Pond conditions require an area of 2-3 mu, a water depth of 50-60 cm, and a pond bottom covered with 15-20 cm thick mud. Moreover, environmental factors such as irrigation and drainage, traffic, sunshine and water quality should be considered in pond site selection.
2, pool cleaning and disinfection
Some gramineous plants (such as ryegrass and reed) can be planted around the pond about 1 cm away from the shore for shading, which is also beneficial to water quality cultivation. Before the seedlings go into the pond, the pond is cleaned and disinfected with quicklime (per mu 150Kg). When the water in the pond is green, the seedlings can be put in.
3. Release loach seedlings.
In general, the stocking density of loach fry should be 800 ~ 1000, and it can be increased appropriately if there is running water. Note that the same batch of loach fry with the same hatching specifications should be kept in the same pond to ensure the balanced growth of fry and improve the survival rate.
4. Feed feeding
Loach seedlings, who just got off the pond, just needs to feed some digestible concentrated feed such as cooked egg yolk, bean powder and bean cake. When the seedlings grow to 1cm, they can already prey on insects in the water. At this time, it can feed some cooked wheat flour, chaff, chopped fish, shrimp and other feeds three or four times a day. In addition, in winter, when the water temperature is lower than 10℃, it is not necessary to feed the loach. At this time, the depth of the pool water should be appropriately reduced, or a layer of straw should be laid at the bottom of the pool after the pool water is drained, so that the loach can safely overwinter.
5. Water quality control
When loach species first entered the pond, the water depth of the pond was kept at 10 to 20 cm. Later, with the growth of loach species, the water level gradually deepened to its due depth, which was shallow at ordinary times and deep when it was hot and high temperature, and fresh water was often injected to maintain a good water environment. If it is found that loach swims to the surface and spits air, it should be injected with fresh water in time or take measures to increase oxygen.