Industrialized winter period dormancy culture system and culture method of turbot in cold regions

Abstract

The invention relates to an industrial winter periodic dormancy breeding system for psetta maxima in a cold area and a breeding method using the system, and belongs to the field of marine culture. Thebreeding system comprises a breeding water preparing area, a psetta maxima dormant pond or culture pond, a light control facility, a water inlet system, a water discharging system and an oxygen supply system. The invention also provides the method for breeding by utilizing the above breeding system. The method comprises the steps of management in a dormant culture period, management in a recoveryculture period, management in a rapid growth culture period and management in a normal culture period; that is, when temperature of external seawater and water in the industrial culture pond is 6 + / -0.5 DEG C, breeding water does not need to be heat for breeding, and methods of controlling light, controlling temperature, stopping feeding, and reducing water exchange are adopted to make the psetta maxima in a periodic dormancy state; and after winter, when temperature of external water is raised, hunger stress stimulates appetite of the psetta maxima, feeding behavior is enhanced, and a phenomenon of quick growth appears. According to the method disclosed by the invention, in the whole breeding cycle, growth of the psetta maxima is not delayed due to the periodic dormancy energy-saving breeding method, on the contrary, costs of water, fuel and power and labor are saved, and the purposes of reducing costs and increasing efficiency are realized.

Description

technical field [0001] The invention belongs to the technical field of industrial culture of seawater, and in particular relates to a method for industrial winter dormancy culture of turbot in cold regions. Background technique [0002] Turbot belongs to the flounder family and the genus Turbot. It is a rare and precious flatfish native to the North Sea, Baltic Sea and Mediterranean coast of Europe. Since it was successfully introduced in 1992, as a typical factory-farmed economic fish in my country, its annual output has reached 90,000 tons at its peak, and it has become the largest cultured species of flounder and flounder in my country. Turbot is resistant to low temperature and grows fast. , Delicious meat, deeply loved by people. Turbot has strict requirements on seawater indicators such as temperature, the highest lethal temperature is 28-30°C, the lowest lethal temperature is 1-2°C; the highest growth temperature is 21-27°C, and the lowest growth temperature is 7-8°C;...

AI Technical Summary

Problems solved by technology

my country's Liaoning, Tianjin, Shandong and other northern coastal areas are the main production areas of turbot. The breeding mode is generally industrialized flowing water farming, and the water for breeding is mainly groundwater and external sea water at 12-15°C. Due to years of extraction, Groundwater resources are on the verge of depletion. Breeding in the cold winter in the north, due to the lack of groundwater and the low temperature of the outer sea water, requires an appropriate amount of boiler heating to raise the temperature, which will cause a certain amount of coal-fired air pollution, and will also cause a lot of energy loss. Moreover, the growth rate of turbot is slow, especially the conversion rate of bait in winter is low, which greatly increases the cost of breeding; for example: Xingcheng, Liaoning Province, my country is the main production area of ​​turbot breeding in my country. Each turbot must spend at least one cold winter in Xingcheng. Due to the low water temperature and long growth cycle, the breeding cost is significantly higher than other farming areas in my country.

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