Wuyi adult fish breeding technology
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First, the aquaculture facilities, earthen ponds, stone pools, and old mud pools at the end of the earth can all be farmed. The high-density single-cultivation requires a water depth of 1.5 to 2 meters and a depth of 2 to 2.5 meters. Sets in, drains and escape prevention facilities. In the pool around 0.8 to 1 meters wide water plants, generally do not exceed 25% of the total pool area. 50-75 kg of quick lime are used for disinfection of the surface of water per acre before stocking. Second, it is best to use fish species produced locally for breeding of fingerlings. Fish stocking time: Fish stocks of the year were stocked from June to August, and stocks were stocked every three months in April and April. Before stocking, fish species should be soaked with 3% to 5% saline for 10 to 15 minutes. When the average water depth is between 1.7 and 1.8, 9 000 to 10 000 species of fish with a body length of 10 to 14 cm per mu, or 6 000 to 8 000 species of fish with a body length of 16 to 20 cm, will be released. Third, feeding feed is mainly based on fresh animal feed, and the feeding amount is 6% to 10% of fish weight. Small fish purchased on the market must be soaked with 3% to 5% salt solution before feeding. To achieve "four set" feeding. Introduce Uji into the feeding area before feeding. Fourth, water quality management In the early aquaculture, change the water once a week, each time to change 1/3; every 15 days, a large water change, each time for 4/5. In the hot season, usually a small change of water in 3 days, a large change in water in 7 to 10 days. In winter and hot season, the water level should be raised to keep the water temperature relatively stable. Fifth, grading and developing specifications and tidyness is one of the keys to the success of breeding. When the fish is 10 to 20 cm in length, it is best to use net cages in Datang in order to facilitate catching. After 2 or 3 divisions, they will invest in Datang when the fish body reaches 20 centimeters. The day before each parenting must be stopped. 6. Fish species with a catch length of 10 cm or more will be stocked for 11 to 12 months.