Method for breeding cynoglossus semilaevis fry in artificial halogen salt water

A technology of semi-smooth tongue sole and seedlings, which is applied in the field of cultivating semi-smooth tongue sole seedlings in artificial brine and salt water, can solve the problems of low survival rate, biomass loss, and high cost, and achieve the effects of improving the survival rate of cultivation, expanding the breeding space, and saving the cost of seedling cultivation

Active Publication Date: 2014-09-03
SHAOXING HONGGANG AGRI DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a method for cultivating tongue sole seedlings in artificial brine and salt water to solve the problems of biomass loss, short action time, high cost, low survival rate and susceptibility to disease caused by the prior art

Method used

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Embodiment Construction

[0036] Below in conjunction with specific embodiment, further elaborate the present invention.

[0037] From November 2012 to February 2013, Shaoxing Honggang Agricultural Development Co., Ltd. utilized a method for cultivating tongue sole seedlings with artificial brine according to the present invention, and carried out tongue sole seedling cultivation. The gradient salt reduction adjustment in the intermediate cultivation process has successfully cultivated 185,000 commercial seedlings, and the seedling cultivation effect is good. Seedling cultivation is carried out through the following steps:

[0038] 1. Prepare seedlings with brine

[0039] Source of brine: Concentrated brine from a salt field in Zhoushan before drying the salt, with a Baume degree of 15 and a salinity of 14.5%.

[0040] Mixing solution: tap water.

[0041] Salinity calculation formula: salinity (‰) = 1305 (specific gravity -1) + (t-17.5) × 0.3 (when the water temperature (t) is higher than 17.5°C)

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Abstract

The invention discloses a method for breeding cynoglossus semilaevis fry in artificial halogen salt water. The method mainly includes the step that the cynoglossus semilaevis fry are bred in halogen salt water formed by mixing underground brine or concentrated brine used after salt manufacturing with fresh water or low-salinity seawater. The method particularly includes the steps of mixing the halogen salt water for seedling breeding, incubation of fertilized eggs, early breeding of the fry and intermediate breeding of the fry. Salt reducing breeding is conducted in the early breeding process and the intermediate breeding process of the fry, salinity can be gradually reduced to 20 in the early breeding stage, and salinity of breeding water can be reduced to 10 in the intermediate breeding stage. By the adoption of the method, the breeding survival rate of the cynoglossus semilaevis fry can be increased, the albino rate of the fry is reduced, seedling breeding cost is greatly reduced, and cynoglossus semilaevis breeding space can be conveniently expanded.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for cultivating tongue sole seedlings in artificial brine. Background technique [0002] The semi-smooth tongue belongs to the order Pleuriformes, the family Tongidae, and the genus Tongue sole, commonly known as tami, beef tongue, etc. Semi-smooth tongue ta is a large benthic fish known for its tender meat, delicious taste and high economic value. It is a famous and high-quality fish species widely recognized by the consumer market in my country. [0003] In the prior art, it has been discussed to use brine-salt water to cultivate semi-smooth tongue sole. The breeding conditions are to adjust the salinity to about 30 after blending underground brine and fresh water, the temperature is about 20°C, the pH value is about 7.5, and the dissolved oxygen is 6mg / L. Left and right, this culture condition has been through all stages from fry to adult fish. [0004] CN1644040 disclose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K10/20A23K50/80
CPCY02A40/81
Inventor 李春广徐永江柳学周左守浩吴国君孙杰峰程庆余
Owner SHAOXING HONGGANG AGRI DEV CO LTD
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