Industrial synchronous preparation method of scylla paramamosain soft-shell crabs

Abstract

The invention provides an industrial synchronous preparation method of scylla paramamosain soft-shell crabs. The method comprises the steps that screened scylla paramamosain is put into breeding boxesof a breeding circulation system with lighting facilities respectively, and the temperature of aquatic water is adjusted to be 30 DEG C, the pH value is adjusted to be 7.8-8.6, and breeding is conducted for 48-72 hours, and the soft-shell crabs are collected during breeding; the screened scylla paramamosain is the scylla paramamosain with cracks appearing between back shells and abdominal shellsor claws; for the aquatic water, the temperature is 30 DEG C, NH4-N is smaller than 0.5 mg / L, DO is greater than or equal to 5.0 mg / L, the pH value is 7.8-8.6, S is 20, and the transparency is 30-60 cm. By means of temperature and environment control, the synchronous molting rate of the scylla paramamosain reaches a certain scale within a short period of time. Compared with soft-shell crabs produced through basket breeding in a traditional aquaculture pond, the same amount of soft-shell crabs are bred and produced, a culturing farm occupies less land, the labor intensity of workers is greatlyreduced, the production efficiency is increased by 5 times or above, operation is easy, the method is suitable for scale production, the cost is lowered, and the aquaculture benefit is increased.

Description

technical field [0001] The invention belongs to the technical field of aquatic product cultivation, and in particular relates to a method for synchronously preparing soft-shell crabs, blue crabs, and soft-shell crabs. Background technique [0002] Scylla Paramamosain, commonly known as Scylla Paramamosain, commonly known as Scylla Paramamosain, Scylla Paramamosain, Scylla Paramamosain, Red Crab Crab, Hele Crab, and Scylla Paramamosain, belongs to Crustacea, Decapod order, Portunidae, Scylla genus, delicious meat , Nutrient-rich, is the absolute dominant species of marine economic crabs in my country's coastal areas. In 2017, the production of blue crabs in my country reached 152,000 tons, with an annual output value of nearly 5 billion yuan. [0003] The market of blue crabs is concentrated from July to October, and the price is relatively low, and the fluctuation is large in different years. The short listing period and price instability seriously restrict its market prospec...

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Problems solved by technology

[0004] There have been researches on the culture and cultivation of soft-shell crabs like blue crabs in China. Zhejiang, Guangdong, Hainan and other provinces also have soft-shell crabs selected by natural molting. However, the traditional production of soft-shell crabs mainly relies on outdoor breeding ponds or set up. Crabs that moult naturally in breeding baskets are time-consuming and labor-intensive, and the output is small, so they cannot be produced on a large scale. Industrialization has not yet been formed, and the output is far from meeting market demand.

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