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Layered cage rearing device and using method thereof

A caged and caged technology, applied in application, fish farming, climate change adaptation, etc., can solve the problems of mutual killing and low utilization of crab breeding space, reduce environmental impact, avoid water quality deterioration, The effect of improving the survival rate

Inactive Publication Date: 2011-06-29
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that the utilization rate of crab breeding space is low, the phenomenon of mutual killing is serious, and the breeding method needs to be broken through urgently.

Method used

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  • Layered cage rearing device and using method thereof
  • Layered cage rearing device and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: Indoor factory culture

[0038] Such as figure 1 Shown, utilize layered cage device of the present invention to be in 10m 2 The indoor cement pool of the 1.4m water depth is used for cultivating pseudo-cave blue crabs.

[0039] The cultured seawater is sand-filtered. During the cultivation period, the water temperature is 22-29° C., and the salinity specific gravity is 16-19. The water is changed every 1 to 3 days, and the amount of water changed is 40-100%.

[0040] Put a thick bamboo pole on the edge of the cement pool, hang 10 groups of cages, the top of each group of cages is 50cm away from the water surface, put a blue crab in each cage, set 4 inflatable heads in the pool, and the initial weight of the blue crab is 21-40g, fed once in the morning and evening, the bait is clams and miscellaneous fish pieces, and the dew is dried for 15 minutes when feeding.

[0041] During the breeding period, the water temperature, specific gravity, dissolved oxyge...

Embodiment 2

[0043] Embodiment 2: soil pond cultivation

[0044] Such as figure 1 As shown, utilize layered cage culture device described in the present invention to carry out the culture of pseudo-cave blue crab in the soil pond of 1 mu outdoors, the pond is long 30m, wide 22m, depth of water 1.8m, water temperature 18-28 ℃, salinity during cultivation. The specific gravity is 25-32, and the water is changed according to the tide.

[0045] Drill 20 rows of wooden stakes in the earthen pond, 5 in each row, each row is tied with a thick rope, fixed on the wooden stakes, a group of cages are tied every 1m, and the top of each group of cages is about 50cm away from the water surface. Put a blue crab and set up an aerator in the pool. The initial weight of the blue crab is 21-40g, and it is fed once in the morning and evening. The bait is clams and miscellaneous fish pieces.

[0046] During the breeding period, the water temperature, specific gravity, dissolved oxygen, pH value, ammonia nitr...

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Abstract

The invention relates to a layered cage rearing device and a using method thereof. The cage rearing device comprises at least one cage body, wherein the cages are overlaid to form a group; a movable feeding door is arranged on the lateral side of the cage body; round holes are formed on the cage separator and coaming of the cage body; the cage body is formed by two pairs of symmetric arc edges and straight edges; a plurality of through holes are formed symmetrically on the outer rims of the arc edges; and a lantern ring is arranged in the center of the top of the cage body. By using the device and the method, the raising density is increased to 4,000 to 12,000 crabs per Mu from hundreds of crabs per Mu, 6 to 20 crabs can be reared in every square meter (on square meters, the raising density includes soil pond raising, and also can be used as calculation bases for indoor high-density raising), so that mutual killing among crabs is completely avoided, and the survival rate of the crabs is improved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a layered cage cultivation device for crab cultivation and a method for using the device. Background technique [0002] Crab is one of the important aquatic products in our country. It is loved by everyone because of its delicious meat and rich nutrition. However, due to the low yield per unit area of ​​its breeding area and high killing rate, it is easy to be infected with germs, and the survival rate is low, so it is difficult to breed. Especially for blue crabs and swimming crabs, which are common marine species in China, the survival rate of crabs under traditional farming methods is 10-20%, and the per unit yield is only 50-150 kg / mu, which is far from other cultured species such as prawns. The main reason is that the utilization rate of crab breeding space is low, the phenomenon of mutual killing is serious, and the breeding method needs to be broken. Contents of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 马凌波陈庆凯蒋科技陈昌禧张凤英马春艳叶坤宋炜马洪雨乔振国
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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