First, cage structure and settings
1, a cage (breeding box). It is made without netting, the mesh is 0.5-1.0 cm, the specification is 10 meters, 1.3 meters and 1.5 meters, and the number is 3.
2, second-level cage (fish box). Mesh 1.5-2 cm, 3 small-size cages, specifications 2 meters 2 meters and 1.8 meters; conventional large cages, specifications 4 meters 7 meters 1.8 meters.
3, cage settings. Choose a pond with an area of ​​nearly 80 acres and a water depth of 2 meters above the Qingtong River. Set the water area as a cage and open the floating setting. Take the bamboo frame as a float and the tank is 20-30 cm above the water surface. The cage is specifically installed and fixed as usual.
Second, the main technical points
1, fish stocking. In mid-May, the first four fish homes were stocked with 500,000-800,000 baits per acre. When they were 1.5-2 cm long, they were purchased on June 6 with a body length of 3-4 cm. Fish species are placed in a cage at a density of 100 animals per square meter. After intensive cultivation to 10 cm, they are released into secondary cages. The stocking densities of small cages and large cages are 40 square meters respectively. 30/m2.
2, fish species cultivation. The purchased carp seedlings were soaked with 3%-4% saline for 10-15 minutes and then placed in a cage. Feeding the bait fish from the breeding pond every day, its size is about 50% of the body length of the catfish, and the amount of calamari is better. At any time, a net sample was taken to check the feeding status of squid species so as to adjust the feeding amount in time.
3, adult fish breeding. At the beginning of July, about 10 cm of squid species were placed in secondary cages, and the fish species cultivated in the bait fish ponds were used as the main bait. Insufficient portions were purchased from the Qingtong River and other waters. The specification of the bait fish does not exceed 50% of the body length of the carp, and the amount of baitfish is 1:20.
4, fish disease prevention. Because the squid only eats live fish for life, it is best to prevent and control the combination of prevention and treatment of fish diseases. During the intensive cultivation of fingerlings, salmon species are most susceptible to parasitic diseases. Therefore, every 5-7 days, use high-efficiency and low-dose insecticide-sterilized drugs to rotate the fish. During the culture of adult fish, every 7-10 days, it is disinfected with a drug hanging bag, and the bait fish must be immersed in the drug before being fed.
5, daily management. Adhere to the daily inspection box, check the cage is damaged, bait fish abundance, water quality changes and so on. The cages are washed once every 10-15 days to maintain a smooth exchange of water inside and outside the cage.