Silver Cod Feeding Technology

Coho Salmon (Oncorhynchus Kisutch), which is classified in the order of Oystercatcher, Salamander, Polygonaceae, and Salmon, is equated with the salmon of the humpback salmon and the salmon of Mengsu. Sex migrating fish. Silver cocoons are native to the United States and Canada. As a result of destructive fishing and environmental pollution, silver cockles have become rare fish. Its flesh is fresh red, taste is good, rich in unsaturated fatty acids, is one of the most valuable fish on the table in the world today. After more than 20 years of systematic breeding, breeding, and application of biological genetic engineering technology, U.S. ichthyologists have enabled silver carps to live forever in freshwater and can perform intensive farming. Currently, silver carp has no history of breeding in China. In January 1998, the Beijing area began to be introduced and seedlings breeding has been carried out. 1. Habits of silver fish cold water fish, the ideal water temperature 10 ~ 18 °C, below 8 °C basically stop eating, and then stop the growth, higher than 18 °C will result in death; habitat conditions require fresh water pollution-free, abundant water, dissolved oxygen Adequate, 80% saturation is appropriate, the adaptability to salinity is very strong, from the fresh water to 10 ‰ salinity water can grow normally. 2. The dietary silver carp is a carnivorous fish, usually dominated by miscellaneous fish. At the seedling stage, zooplankton and benthic animals are also eaten. In the case of artificial breeding, they also prefer pellet feed. 3. Growth According to the Cold Water Fish Culture Center in Seattle, Washington, USA, it will take 8 months for silver cockroaches to grow to 350g, and it can reach 3kg for 8~10 months of keeping. At present, the largest amount of silver cockroaches caught in freshwater natural waters in the United States can reach 14kg, and it can generally be raised from 4 to 6kg in 18 to 24 months. 4. Key technologies for aquaculture (1) Strictly control the breeding environment. Strictly control the water temperature at 8 to 18°C, Do 7mg/l or more, pH 7 to 7.5, and keep the water fresh and pollution-free. Clean the bottom of the culture tank in time. (2) Pay attention to feed quality The content of artificial compound feed protein requires more than 45% and the fat content is 5 to 8%; and it is supplemented with appropriate carbohydrates, with particular emphasis on the combination of minerals and vitamins, otherwise it will cause malnutrition. If it is light, the growth will be affected, while the weight will be large and the area will be dead. (3) The focus of serious prevention and epidemic prevention is the environment, fishing equipment, water quality management and feed quality.

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