When cultivating fish of the first instar, the technical operations such as stocking and feeding are related to the yield, specification, and survival rate of the produced fish, thereby affecting the ultimate benefit of breeding. Therefore, to cultivate first-year fish species, the following aspects should be done:
Pond Requirements: The fish ponds should have an area of ​​3 acres to 10 acres and a water depth of 2 meters to 2.5 meters. The bottom of the pool is flat and the mud is about 10 cm to 15 cm, making it easy to enter and drain. 10 days before stocking, clear ponds should be used, and decomposed manure should be applied one week before stocking.
Summer flowering: Choose summer flowers that have been subjected to nets to be drawn, and transport containers such as buckets, oxygen bags, etc. into the pool for 15 minutes until the pond reaches the pond. The stocking density is controlled at about 100 million tails/mu, preferably no more than 150 million tails/mu. The main fish is put first, and the set of fish is lagging for 10 days to 20 days before stocking. It is better not to cultivate the same fish in the same size.
Feeding: The ponds of the main carp and carp species are dominated by fertilizer and water, supplemented by feeding. In addition to the application of base fertilizer, the monthly application of decomposed livestock and poultry manure 2 times to 3 times, the amount of 100 kg / acre, the daily need to feed the right amount of wheat flour, rice bran and so on. The main ponds for raising grasses and squid species are fed mainly with green puddings such as Euphorbia and duckweeds from July to early September to supplement the amount of concentrates; the amount of fines must be guaranteed from mid-September to early November The feed is fed to enhance the body composition of grass and squid and increase the survival rate of overwintering; if feeding compound feed, the particle size should be suitable.
Water quality regulation: From June to September, change the new water once a week to 2 times, changing the water every time is about 5 cm to 10 cm. Splash lime 1 or 2 times a month. The pond is equipped with aerators that can be turned on for oxygen in the morning and at noon on sunny days.
Disease prevention and treatment: The prevention and control of disease in the breeding stage of fingerlings should be based on prevention and prevention and control. Regular liquids can be spilled around the food court, or you can use drug bags. Pay attention to the monitoring of diseases such as erythroderma, rotten gills, enteritis, bacterial septicemia, and anchor head lice, and take timely treatment measures. Do not overdosing drugs and not abuse drugs.
Tongtang winter: When the water temperature is between 5°C and 10°C, the nets can be drawn and ponds, and the fish species can be sorted and stocked by the species and specifications, and then stocked in special fish ponds. Large-sized fish species can also be stocked directly into adult fish ponds. Pulling nets, selecting fish, transporting and other operations should be quick and gentle to prevent fish injuries.
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