A kind of cultivation method of portunus trituberculatus parent crabs spawning synchronously

A technology of Portunus trituberculatus and breeding method, which is applied in the breeding field of Portunus trituberculatus parent crabs to spawn synchronously, can solve problems such as unfavorable scale of Portunus trituberculatus, limitation of mass production of Portunus trituberculatus, difficulty in ensuring uniform quality of Portunus trituberculatus, etc., and promote development and growth , the effect of reducing disease

Active Publication Date: 2020-10-09
天津海升水产养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 swimming crabs. At the same time, it is not easy to ensure the uniform quality of swimming crabs. These are not conducive to the production of swimming crabs. 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, a kind of cultivation method of portunus trituberculatus parent crab synchronous spawning, comprises the following steps:

[0031] S1: Selection of brood crabs: From March 10th to 15th, female crabs without eggs were caught in the sea. The parent crabs without eggs were selected with strong individual vitality, sensitive response to external stimuli, fast crawling speed, and strong foot support when lying still. Individuals with normal body color, clean body surface, no attachments, firm and tight abdomen, intact limbs, hard carapace, no scars, and full yolk on the ventral surface of the two spines;

[0032] S2: The cultivation pool is pre-treated, and the cultivation pool is divided into two areas AB. Fine sand is laid in area A, and no sand is laid in area B; at the same time, the top of the cultivation pool is covered with black cloth, and the black cloth covers all the cultivation pools;

[0033] S3: Add pond water, inject breeding water into the culti...

Embodiment 2

[0039] Embodiment 2, a kind of cultivation method of portunus trituberculatus parent crab synchronous spawning, comprises the following steps:

[0040] S5: Control the water temperature to gradually increase. The parent crabs in area A start from 8°C and raise the temperature by 0.5°C every day to 20.5°C. The water temperature in area B is kept at 8°C for 2 days, and the temperature is raised by 0.5°C every day to 22°C. During this period, the breeders continuously transfer the brood crabs that have brooded eggs from area A to area B; at the same time, the water in the breeding pool is changed by 80% every day, and the dead crab limbs and residual bait are cleaned up to keep the water quality fresh and the dissolved oxygen sufficient. Wash and disinfect the bottom sand in one week;

[0041] All the other are identical with embodiment 1.

Embodiment 3

[0042] Embodiment 3, a kind of cultivation method of portunus trituberculatus parent crab synchronous spawning, comprises the following steps:

[0043] S5: Control the water temperature to gradually heat up. The parent crabs in area A start at 8°C and raise the temperature by 0.5°C every day to 20°C. 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. During this period, the breeders continuously transfer the brood crabs that have brooded eggs from area A to area B; at the same time, the water in the breeding pool is changed by 80% every day, and the dead crab limbs and residual bait are cleaned up to keep the water quality fresh and the dissolved oxygen sufficient. Wash and disinfect the bottom sand in one week;

[0044] All the other are identical with embodiment 1.

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Abstract

The invention discloses a farming method allowing parent crabs of Portunus trituberculatus to lay eggs synchronously. The farming method according to the technical scheme is characterized by comprising the steps of S1, optimizing parent crabs; S2, pretreating a cultivation pool; S3, adding pool water; S4, adding the parent crabs into the cultivation pool, wherein the parent crabs not carrying eggsare added to zone A, and the parent crabs carrying eggs are added to zone B; S5, controlling the water temperature to gradually rise; S6, setting temperature compensation zone C for the parent crabsthat develop slowly; S7, activating the temperature compensation zone; S8, when all the parent crabs carry eggs and the eggs are uniform in color, hanging the parent crabs to cages to lay the eggs. Strict monitoring is provided for temperature and water quality when the parent crabs lay eggs; the environment necessary to the parent crabs is adjusted in time according to their states; finally, theparent crabs in the different development stages can lay eggs synchronously, and the whole egg-laying process is available for large-scale farming; in addition, the egg-laying quantity is further increased owing to the large-scale farming.

Description

technical field [0001] The invention relates to the technical field of aquatic product cultivation, in particular to a breeding method for synchronous spawning of Portunus trituberculatus parent crabs. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/59A23K50/30A23K10/20A23K10/22
CPCA01K61/59A23K10/20A23K10/22A23K50/30Y02A40/81
Inventor 李永祥黄亚冬吴键任延军孙素慧魏翠王冬浩李卫东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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