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Large brill natural spawning breeding method

A breeding method and technology of turbot, which is applied in the field of natural spawning of turbot, can solve problems such as inability to spawn naturally

Inactive Publication Date: 2004-11-10
WEIHAI NANYANG BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the deficiency that the existing artificial breeding of turbot cannot spawn naturally, the present invention provides a breeding method for artificially breeding turbot to lay eggs naturally. In this breeding method, turbot can not only grow and develop normally, but also individual mature Turbot are able to spawn naturally

Method used

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Examples

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Effect test

Embodiment 1

[0007] Embodiment 1: building volume with reinforced concrete is 130m 3 1. The depth of the pool is a turbot spawning pond of 3 meters. The top of the pond is shaded with a shading cloth, and the shading rate is more than 95%. There is an egg-collecting mouth or an overflow at the upper end of the pool wall opposite to the water inlet pipe of the spawning pond. Collect floating eggs; select three-tailed female turbot and six-tailed male turbot that have been cultivated for three years and put them into the above-mentioned spawning pond for cultivation, and artificially control the light. For 14 hours, the seawater temperature in the spawning pond was controlled at 11-16°C, and an appropriate amount of fresh small miscellaneous fish was fed every day, and the water was changed quantitatively at fixed points every day. After that, ovulation began successively. During the spawning period, a special behavior can be observed. The female fish, which is closely pursued by the male fi...

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Abstract

A method for industrial raising pygmy flounder by natural spawning is characterized by that the seawater is filled in a spawning pool until water depth is 2-4 m, a light shielding cloth with 95% of optical shielding rate is installed above the spawning pool, the male and female pygmy flounder in the ratio of 2:1 are raised in the pool at 11-16 deg.C of water temp, and the spawning pool is artificially irradiated by 600-1500 lx for 12-16 hr perday.

Description

Technical field [0001] The invention relates to a culture technique for industrialized fish farming, in particular to a culture method for natural spawning of turbot. Background technique [0002] Turbot is a deep-sea cold-water fish. At present, under artificial breeding conditions (generally, the water body is small and the density is high), it can mature, but it cannot lay eggs normally. It must be artificially squeezed and fertilized to cultivate turbot larvae. The quality of fertilized eggs obtained by the method of squeezing eggs and fertilization fluctuates greatly, and it is easy to cause damage to broodstock. Contents of the invention [0003] In order to overcome the deficiency that the existing artificial breeding of turbot cannot spawn naturally, the present invention provides a breeding method for artificially breeding turbot to lay eggs naturally. In this breeding method, turbot can not only grow and develop normally, but also individual mature Turbot are ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 连建华张福玲王宏伟潘雁甲杨燕妮
Owner WEIHAI NANYANG BIO TECH
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