Method for high-density river crab aquaculture with six-ring cages

Abstract

A method for high-density river crab aquaculture with six-ring cages particularly includes the steps: pond modification; cage setting; aquatic plant planting; river crab seed selection; releasing for aquaculture; bait casting for feeding; daily management. A covert space is created for river crabs to molt, and molting of the river crabs is benefited. In addition, the river crabs can select different growing aqueous layers according to own body conditions, so that river crab aquaculture density is increased. The six-ring cages occupy large water spaces and provide different growing aqueous layers for the river crabs from top to bottom, aquaculture yield of an original water area is unaffected since the cages are suspended in water, and river crab aquaculture yield of a single pond can be increased. Quality of commercial crabs can be improved by properly increasing input of protein baits in the later aquaculture period.

Description

technical field The invention relates to the technical field of aquaculture, in particular to a method for high-density culture of river crabs with a six-ring hanging cage. Background technique Since ancient times, river crab has been a traditional delicacy in Chinese food and has been very popular among people. However, the current river crab farming is based on the main concept of raising large crabs, which affects the farmers, and the specifications of the cultured river crabs are polarized. As everyone knows, the price of big crabs flooding the market has discouraged the common people, seriously hindered the people's desire to buy, and instead caused the problem of "difficult to eat big crabs" for the common people. At present, river crab farming is basically earthen ponds, which are dug by the farmers themselves, and the water depth is mostly 1.5-1.8m. The number of seedlings is small. In addition, river crabs usually live at the bottom of the pond, which makes riv...

AI Technical Summary

Problems solved by technology

For most farmers, it is difficult to maintain the normal growth of aquatic plants during crab breeding, which makes it difficult to find a hidden space when crabs moult, and is easily disturbed by other cultured organisms, resulting in moulting failure or moulting process death

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