YT-88 YT-88 Shenzhen Sunshine Technology Co.,Ltd , https://www.shenzhenyatwin.com
2, early childhood education. This is the most critical stage in the incubation period. The quality of the childish management at this stage is directly related to whether the entire parenting phase is ideal.
The site cultivated in this period is a pre-cultivation nursery pond with 10 cm of sand at the bottom of the tank, about 0.6 mm of sand diameter, about 50 cm of water for injection, and a stocking density of 50 per square meter. The incubation period is 20 days, and the discharge specification is 8 g/year. Only about.
Management points:
Water quality management: Before stocking, it is necessary to use chemical fertilizer to make the oil green. After stocking, keep this fatness and water color. When it is too fat, pay attention to sewage.
Chimpanzee larvae or leeches are used as bait, and 1 kilogram per 1,000 juveniles are fed.
In this period, the concentration of five parts per million of bleach was used to prevent disinfection. The common epidemics of this period were white spot disease and leukoplakia. Attention should be paid to the management.
Water hyacinths have a stocking area of ​​1/3 of the total pool, and they should rely on the side of the drain when stocking.
3. Nurturing children in the middle period. The medium-term nursery school cultivated the bottom of the pool with a diameter of 1 mm, 15 cm of sand, and a water depth of 50 cm. The stocking density was 40 per square meter. The incubation period was 40 days. The average size of the outlet was about 25 grams per head.
Management points:
The management of water quality is the same as that of the previous period. Only the number of sewage discharges has increased, and the daily intake and drainage exchange volume is about 10 cm.
About 50% of cooked fish and juvenile clams were mixed, 10% of vegetable juice and 3% of vegetable oil were added. Feeding amount is about 1 kilogram per thousand juveniles, feed 3 times a day, feed at 8 am, 3 pm and 10 pm.
Use lime as a disinfectant, use 30 parts per million, sprinkle once every 10 days. Pay attention to control bell disease.
The water of the water hyacinth accounts for one-third of the total pool.
4, late childhood training. In the late period of time, the thickness of the bottom of the nursery is 18 cm, the diameter of the sand is 1 mm, the depth of the water is 60 cm, and the stocking density is 30 per square meter. The incubation period is 30 days. The average size of the outlet is about 50 g/bar.
Management points:
Daily intake and drainage exchange volume is 10 cm.
30% of cooked fish was fed with juvenile clams, 15% vegetable juice and 4% vegetable oil were fed 3 times a day at 8 am, 3 pm, and 10 pm. Each day, the amount of feeding is about 2.4 kg.
Use quicklime as a disinfectant and sprinkle it once every 10 days at a concentration of 30 parts per million.
Nurturing techniques
1, nursery's indoor stage cultivation. The incubator room of the breeding farm is equipped with a pool (for details, see the construction section of the market). The bottom of the pool is sanded. The diameter of the sand is 0.6 mm and 1.0 mm. The thickness of the sand is 5 cm. The sand surface should be inclined toward the sewage outlet. 1%, water injection 10 cm. This period of management must be fine, change the water once a day, the water temperature is 30 °C, one-millionth of a day bleaching powder is sprinkled every day, and the cooked egg yolks, rotifers, leeches, etc. are stocked, and the stocking density is 200 250 per square meter. , Holding for 1 day and 5 days.