2. You can feed fresh feed directly the next day, including red worms and zooplankton.
3. In order to domesticate fry, floating pellet feed and minced fish can be directly crushed, and live fresh feed can be mixed with fish paste or floating pellets and fed.
4. During the seedling raising period, the temporary culture pond should be disinfected once a week, and the disinfectant can be 0.3ppm of strong chlorine essence or 15ppm of formalin.
5. In the first three days of feeding, you need to mix 3 grams of oxytetracycline, 0.5 grams of furazolidone and 1 gram of vitamins in the feed you eat every day. After feeding for more than 20 days, it will grow to 4-6 cm and then put it in a big pond for feeding.
Second, the water quality adjustment 1, according to the transparency and color of the water body, adjust and inject an appropriate amount of new water.
Perch likes to live in water with dissolved oxygen of 4-6 mg/L and water transparency of 30-40 cm.
2. At different stages of fish growth, the water quality is regulated differently.
For example, in the early stage, when the temperature of bass is low, the volume is relatively small, and the water quality is easy to control, the water change cycle can be extended.
3. When the bass keeps growing and the biomass of the pond keeps increasing, it is necessary to check the situation of the pond frequently and change the water frequently.
3. Pond construction 1. Choose a place with good water quality, abundant water resources, less sediment, complete drainage system, flat bottom, water depth of 1.54m and area of 1-5 mu.
2. After exposure in the dry pond, put10-10 cm of water into the perch before releasing it, and then disinfect the pond.
3. Disinfection method of pond cleaning: First, after spraying 80 ~ 100 kg of quicklime water per mu, add 5 kg of bleaching powder to the pond again the next day.
Iv. stock of seedlings 1. After the larval bass is cultivated, the fish with the length of about 10 cm are put into the fish pond and cultivated by orderly stocking.
2. Stocking density: per mu 1000- 1500.
3. Breeding method: 40 bighead carp, 20 silver carp and 200 pengze crucian carp with large breeding specifications are put into fish ponds for breeding, which is helpful to improve the yield.