Coastal barracuda and silver oyster mixed breeder benefits

In recent years, Binhai Town and Binhai Economic Zone in Binhai County have been breeding silver oysters all year round. Although 800 to 900 kilograms of silver worms can be produced per acre, the phenomenon of “abundant harvest” is often observed due to the relatively concentrated arrest time. In order to solve this problem, the Marine Resources and Fisheries Bureau of Jiangsu Province drafted a polyculture model of barracuda and silver carp in the fishery science and technology project of Binhai County, and achieved high aquaculture benefits. At present, the mixed area of ​​barracuda and silver bream in Binhai County has developed to about 4,000 mu. Generally, 400 to 500 kg of barracuda, 400 kg of silver bream, and 100 kg of carp are produced per mu. The polyculture model is described below.

Tangkou is not limited to the size of the Tangkou, and it is convenient to enter and drain the water. The Tangkou of irrigation and oxygenation equipment is well-equipped. The ponds are cleaned and disinfected by conventional methods prior to entering the pond. The maximum water retention depth of the pond is not less than 2 meters.

Seed stocking generally in early March, about 50 mus per acre, about 1000 tails of silver larvae, and about 50 grams per tail per acre of 800 to 1,000 grams in the middle of March. 100 or so. Fish species can be sterilized with 5% saline for 3 to 5 minutes before stocking. The specific seeding time is based on the source of the fish and the clear pond time.

Feeding and management feed whole-grain barracuda pellet feed (also available with a total price of 26% to 28% of total salmon feed containing protein), generally feeding 2 to 3 times a day, and the amount of fish fed to eat about 80% of the fish There is no residual bait on the food table. Specific follow the "three see four set" feeding method. In terms of water quality management, regular inspections are conducted at regular intervals, problems are discovered in time, and compound microbial preparations are used at appropriate times. They are generally used once every two weeks.

Pest control The fish and maggots are routinely inspected on a regular basis. When parasites such as trichomonads, ringworms and other parasites are found, they are promptly treated with trichlorfon, fast-spraying wheels and other Quanchiposa treatments.

Precautions (1) Do not feed high-protein feed, otherwise it will affect the growth of barracuda; (2) As barracuda requires relatively high dissolved oxygen, it is necessary to open the aerator in due course to keep the water in a state of high dissolved oxygen. (3) Conditional cultivation of benthic diatoms can be used to feed boiled fish in Tangkou, which can not only promote the growth of barracudas, but also improve the meat quality.