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A kind of breeding method of swimming crab ecological nursery

A swimming crab and ecological technology, which is applied in fish farming, animal feed, animal feed, etc., can solve the problems that it is difficult to ensure the uniform quality of swimming crabs, unfavorable to the scale of swimming crabs, and limit the mass production of swimming crabs, so as to achieve convenient and unified management and reduce diseases. Disease probability, good temperature accumulation effect

Active Publication Date: 2020-10-09
天津海升水产养殖有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] Most of the current Portunus farming is carried out by farmers in their own ponds. This breeding method greatly limits the mass production of Portunus, and it is not easy to ensure the uniform quality of Portunus. These are not conducive to the production of Portunus as a whole. Scale, how to standardize the breeding process and improve the scale of swimming crab farming has always been a problem in the field of swimming crab farming

Method used

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  • A kind of breeding method of swimming crab ecological nursery
  • A kind of breeding method of swimming crab ecological nursery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: a kind of portunus crab ecological seedling raising method, it comprises the steps:

[0054] S1: Preference for brood crabs: from March 10th to 15th, female crabs without oviposit eggs were caught in the sea;

[0055] S2: pre-treatment of the cultivation pool, the 20m 2 The cultivation pond with an area of ​​1m and a water surface height of 1m is divided into two areas, AB, where fine sand is laid in area A, and no sand is laid in area B;

[0056] S3: Add pond water, inject breeding water into the cultivation pond, the proportion of breeding water is 1.020, and the initial temperature is 8°C;

[0057] S4: Put the brood crabs into the cultivation pond, put the parent crabs without eggs into the A area, and put the brood crabs with eggs into the B area;

[0058] S5: Control the water temperature to gradually increase. The parent crabs in area A start at 8°C and raise the temperature by 0.5°C every day to 19.5°C. The water temperature in area B is first kep...

Embodiment 2

[0079] Embodiment 2: In the rotifer strengthening process, the dosage of each component in the composite algae strengthening composition is specifically iodine-enriched Dunaliella salina 2×10 6 cells / ml, Schizochytrium powder 20g / L;

[0080] In the compound algae enhancement composition used for the enhancement of Artemia nauplii, the specific dosage is 1x10 iodine-enriched Dunaliella salina 6 cells / ml, Schizochytrium powder 10g / L;

[0081] Artemia Adult Fortified Medium Iodine-Enriched Dunaliella Salina 2x10 6 cells / ml, Schizochytrium powder 20g / L;

[0082] Copepod bait fortified with iodine-enriched Dunaliella salina 1x10 6 cells / ml, Schizochytrium algae powder 10g / L, all the other are identical with embodiment 1.

Embodiment 3

[0083] Embodiment 3: a kind of portunus crab ecological nursery raising method, it comprises the steps:

[0084] S1: oviposit crabs caught from May 15 to June 1;

[0085] S2: pre-treatment of the cultivation pool, the 20m 2 The cultivation pond with an area of ​​1m and a water surface height of 1m is divided into two areas, AB, where fine sand is laid in area A, and no sand is laid in area B;

[0086] S3: Add pond water, inject breeding water into the cultivation pond, the proportion of breeding water is 1.020, and the initial temperature is 8°C;

[0087] S4: Put the brood crabs into the cultivation pond, and put the brood crabs that have brooded eggs into Zone B;

[0088] S5: The water temperature in area B is first kept at 8°C for 3 days, and the temperature is raised by 0.5°C every day to 20°C;

[0089] S6: Set a temperature compensation area C for the stunted parent crabs, put the stunted parent crabs into the temperature compensation area C, and control the temperature...

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Abstract

The invention discloses an ecological breeding method for raising juvenile Portunus trituberculatus. The technical scheme of the ecological breeding method comprises the following steps of: S1, performing optimal selection of parent Portunus trituberculatus; S2, carrying out pre-treatment of a cultivation pool; S3, adding pool water; S4, placing the parent Portunus trituberculatus into the cultivation pool; S5, controlling the temperature of the water, and gradually raising the temperature; S6, setting a temperature compensation zone C for parent Portunus trituberculatus which develops slowly;S7, starting the temperature compensation zone; S8, after all the parent Portunus trituberculatus is at an oogenesis state, and all eggs are in the same color, hanging the parent Portunus trituberculatus in a cage for spawning so as to obtain Portunus trituberculatus eggs which are produced synchronously; S9, preparing live bait; S10, cultivating zoea; S11, feeding megalopa; and S12, feeding thejuvenile Portunus trituberculatus. Through the ecological breeding method, reasonable control on the temperature of the water in the cultivation pool, the water quality environment and feed is achieved, whole-process scale of breeding of Portunus trituberculatus is achieved, and the yield of Portunus trituberculatus breeding is improved greatly.

Description

technical field [0001] The invention relates to the technical field of marine product cultivation, in particular to a method for raising portunus ecological seedlings. Background technique [0002] Portunus trituberculatus, commonly known as swimming crab, gun crab, sea ​​crab , sea ​​crab , widely distributed in Liaoning, China Hebei , Tianjin , Shandong , Jiangsu, zhejiang , Fujian and other sea areas, generally from south to north, March to May and September to October are the peak production seasons. Liaodong half of Bohai Bay island From April to May, the output is more. Portunus trituberculatus is one of the most important export products in China. [0003] Existing can refer to the Chinese patent that publication number is CN106106285A, and it discloses a kind of pond natural ecological culture method of portunus. Including the setting of aquaculture ponds, the preliminary preparations for aquaculture, the placement of aquaculture seedlings, the treatm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/40A01K61/59A23K10/20A23K50/80
CPCA01K61/40A01K61/59A23K10/20A23K50/80Y02A40/81
Inventor 黄亚冬吴键李永祥魏翠孙素慧任延军李卫东王冬浩王金亮李天宝朱占营
Owner 天津海升水产养殖有限公司
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