Cherax quadricarinatus industrial early-breeding method and system
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A red crayfish, industrialized technology, applied in chemical instruments and methods, botanical equipment and methods, climate change adaptation, etc. The effect of density
Active Publication Date: 2020-01-10
FRESHWATER FISHERIES RES INSITUTE OF JIANGSUPROVINCE
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[0004] The purpose of the present invention is to invent a method and system for industrialized early propagation of ...
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Embodiment 1
[0032] like figure 1 shown.
[0033] A kind of red claw crayfish industrialization early propagation method, it comprises the following steps
[0034] 1. Construction and layout of multi-span greenhouses;
[0035] To build a multi-span greenhouse, taking 10 mu as an example, 2 mu is the artificial heating greenhouse area, and 8 mu is the natural heating area. 50% of the plant purification area and 50% of the cage temporary breeding area. Arranged alternately in a zigzag shape.
[0036] 2. Temporary cultivation in cages in the natural warming area;
[0037] In the middle and late November of each year, when the water temperature in the outer pond is lower than 20 degrees Celsius, the red-clawed crayfish cultivated in other places or in the surrounding areas are screened and put into the cages in the natural temperature-raising area for temporary cultivation for 5 days, so that the red-clawed crayfish can grow. There is a preliminary adaptation to the local water quality a...
Embodiment 2
[0051] like figure 1 shown.
[0052] A kind of industrial early breeding system of red claw crayfish, it comprises:
[0053] A multi-span greenhouse 1, the temperature in the multi-span greenhouse 1 is higher than the ambient water temperature by more than 3 degrees Celsius, and there is enough area for setting the natural heating zone 2 and the artificial heating zone 3; taking 10 mu as an example, 2 mu is the artificial heating greenhouse area, and 8 mu is the natural heating area; the natural heating area 2 and the artificial heating area 3 are connected by pipelines or culverts with valves; the natural heating area 2 and the artificial heating area 3 should be separated by thermal insulation walls, and at the same time, the rest of the walls in the artificial heating zone 3 should be thermally insulated, that is, all around the artificial heating zone should be thermal insulation walls 11;
[0054] One natural warming zone 2, this natural warming zone 2 is made up of pl...
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Abstract
The invention discloses a cherax quadricarinatus industrial early-breeding method and system. The method is characterized by including: setting small net cages for temporary rearing by adopting tandemgreenhouse ponds, so that cherax quadricarinatus can effectively adapt to water quality conditions of a local water source before entering a heating greenhouse; slightly and naturally increasing thetemperature in an early stage, and performing male and female partitioned breeding in the same pond after entering the greenhouse; when preset control conditions are reached, opening a partition device to enable complete mating of male and female cherax quadricarinatus and oogenesis; after mating of 70-80% of female cherax quadricarinatus is completed, taking out 80% of male cherax quadricarinatus, breeding in a special pond, and waiting for next mating; after separation of well developed juvenile cherax quadricarinatus from maternal bodies, falling from bottom holes, driving through a retaining plate, and bringing out along with water flow. Outer tandem greenhouses are used for drainage, water storage and purification and available for planting of water purification plants; in mass emergence in spring, effective utilization in pond large-scale fry culture areas can be realized, a culture site is expanded, and energy consumption is reduced. Compared with traditional greenhouse artificial breeding, the method and the system have the advantage that emergence time is 1 month ahead of time.
Description
technical field [0001] The present invention relates to a kind of aquaculture technology, especially a kind of cultivation technology of red-clawed crayfish, specifically a method and system of industrialized early breeding of red-clawed crayfish. Background technique [0002] Red-clawed crayfish is also called Australian freshwater lobster, four-ridge light-shell crayfish, red-claw light-shell crayfish, scientific name four-ridge light-shell crayfish ( Cherax quadricarinatus ), belonging to the phylum Arthropoda, Crustacea, Decapod, Pseudomonas, and the genus Light-shelled Shrimp. Its individual size is relatively large, and its appearance is similar to that of lobsters in the sea, but it belongs to the species of shrimp that lives and reproduces in fresh water. Its meat quality is tight It is firm, smooth and crisp, and delicious in taste. It is one of the shrimp varieties with higher economic value in the world. [0003] The origin of red crayfish is northern Australia. ...
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