Culture techniques of freshwater crayfish

Freshwater crayfish, also known as crayfish, is tender and nutritious, containing 8 kinds of essential amino acids, but low in fat, high in promyosin and paramyosin, and high in edible parts. Freshwater crayfish live widely in freshwater lakes, rivers, ponds, ditches and paddy fields. Benthos, plankton and all kinds of aquatic plants are palatable bait and grow well in these waters.

Water body selection

Freshwater lobster has strong vitality. It can be cultured not only in ponds, rice fields, pits and ponds in front of the house, but also in some barren water, beaches and fishery wasteland which are not suitable for farming and aquaculture.

Water body treatment

Every 667 square meters of reservoirs, 10 kilograms of quicklime should be used for sterilization and disinfection. During the culture process, attention should be paid to controlling the relevant water quality standards, mainly because the transparency should be kept at 20 to 25 centimeters.

Transplant aquatic plants

Freshwater lobsters like shade, it is best to plant forage grasses such as water peanuts and ryegrass on the edge of the pond, grow appropriate amount of water hyacinth and hollow vegetables on the water surface, and plant goldfish algae at the bottom of the water, which is not only conducive to lobster feeding, molting and other activities, but also reduce their cannibalism.

Release of shrimp seedlings

The way to solve the problem of shrimp species is to directly put the egg-holding shrimp and the young shrimp. Shrimp species are directly fished in rivers, ditches, ponds, rice fields and other waters, or purchased from the market. Generally every 667 square meters of water put 40 kilograms of shrimp holding eggs, or 80 kilograms of juvenile shrimp. According to this standard, the yield of adult shrimp can reach 400 kilograms per 667 square meters. Parent shrimp with eggs, released in April.

Bait feeding

Freshwater crayfish are omnivorous and like to eat plant fodder. in order to reduce the breeding cost, the bait is mainly fed with plant feed, such as fresh water grass, water peanuts, hollow cabbage, wheat bran, rice bran, or semi-mushy straw of barley, wheat, broad bean, rice and other crops. Conditionally put in some animal feed, such as broken snails, small miscellaneous fish and animal offal, will make it grow faster. If the bait is sufficient, the young shrimp can meet the market specifications after 30 days and 40 days.

Water quality management

Freshwater crayfish has strong disease resistance, basically no disease, but requires high transparency of water quality. Therefore, 50,100 tail flowers and silver carp can be placed every 667 square meters to regulate and control the water quality. During the breeding period, 10 kilograms of quicklime is generally sprinkled every 667 square meters every 15 to 20 days to facilitate the molting of freshwater lobster.

Precautions generally start fishing in shrimp baskets or ground cages in June, with large ones listed and small ones put back in the pond, so that they can continue to be listed until the end of October.