European sterilized fish breeding

Technical points:

1 Introduce fine parents, do a good job in breeding, purification and rejuvenation, and strictly control and test the quality of varieties. 2 In the cultivation of parents, strengthen the management of water quality, feed and fish disease prevention, use greenhouses for parental cultivation, timely production, early breeding, shorten the production cycle, and carry out industrial cultivation of seedlings. (3) In the breeding of fry, the breeding method mainly based on artificial oxytocosis and supplemented by natural reproduction is adopted to fully utilize lake pond water, groundwater, and temperature-controlled hot water resources, and breeding facilities such as hatching tanks, hatching tanks, and hatching loops are used for breeding. Incubate, reproduce three times a year, aim at the market for seasonal and off-season production and supply of seed, minimize the production cycle; use artificial insemination, artificial detackification and flow-water hatching, and nesting supplemented by nesting , improve the fertilization rate, hatching rate, emergence rate. 4 In seedling cultivation, domesticated aquaculture with artificial compound feed is carried out to increase the survival rate, and at the same time, the production capacity of factory-cultivated seedlings is maximized through the practice of feeding and improving water quality. (5) In adult fish production, a wide range of freshwater bodies of water is used to promote the culture of adult fish and polyculture with Chinese fish, by formulating artificial formula feed, strengthening water quality and daily work management, and ecologically controlling fish. disease. 6 In the prevention and treatment of fish diseases, comprehensive ecological control methods should be adopted to minimize the investment of drugs, save expenses, reduce costs, and increase profits.

The main technical and economic indicators: 1 artificial propagation: artificial invigoration yield 80-90%; fertilization rate of 90%; hatching rate of 60-80%. 2 Fish fry breeding: The survival rate of fish fry cultivated in cement ponds, nurseries, cages and ponds reached 80% to 90%; the survival rate of fish species raised in cement ponds and ponds reached 85-90%. 3 adult fish breeding: large areas of the main pond to raise fish reached 440-550 kg / acre or more; a large area of â€‹â€‹mixed ponds to reach 200 kg / mu more than adult fish.

Appropriate Demonstration Extension scope: European sterilized fish (Cyprinus carpio) is a fine freshwater fish species imported from the Czech Republic in 1998 by the Hubei Fisheries Science Research Institute. It has strong adaptability to the environment, a delicious meat and high protein content ( 18.85%), rich in brain gold (unsaturated fatty acids up to 11.49-20.88mol%, known as high-quality food bestsellers in Europe), faster growth (up to 500 grams of 100 grams of stocked fish species in the year), High yield and excellent characteristics. Suitable for aquaculture in freshwater ponds, cages and intensive water bodies.