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Catadromous migration salmon breeding method for migratory salmon

A breeding method and salmon technology, which is applied in the field of aquaculture, can solve problems such as loss of survival ability of sea salmon, influence on production efficiency and industrial development, anti-silver metamorphosis, etc., so as to prolong the light control cycle and control the conditions highly , the effect of prolonging the culture time

Inactive Publication Date: 2020-10-16
国信东方(烟台)循环水养殖科技有限公司 +1
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Problems solved by technology

The silverization process occurs in a specific period in the life history of Atlantic salmon. If the timing of landing in the sea is not well grasped, there will also be an abnormal phenomenon of anti-silvering, that is, the silvered sea salmon loses the ability to survive in sea water and cannot be landed smoothly. Sea, seriously affecting production efficiency and industrial development

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  • Catadromous migration salmon breeding method for migratory salmon

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Embodiment 1

[0026] In Example 1 and Comparative Example 1, Atlantic salmon and sea salmon were cultivated in the salmon nursery workshop of Muping Branch of Shandong Oriental Ocean Technology Co., Ltd.

[0027] On January 16, 2014, migratory Atlantic salmon eyed eggs, which were confirmed to be free of specific pathogenic bacteria after strict disinfection and testing, were imported from Norway. After hatching, opening, and seedling cultivation stages, the automatic fish sorting machine ( Purchased from Italy MILANESE Company) to grade the smolts, all 179,000 smolts with a minimum average weight of 18g were transferred to silverization ponds, and were distributed among 6 breeding ponds.

[0028] Example 1

[0029] 92,000 tails in 3 breeding ponds were selected for silverization.

[0030] 1. Selection of young salmon:

[0031] The smolts preparing for silverization should ensure normal body shape, no damage on the body surface, and strong mobility when entering the pool. Individuals with...

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Abstract

The invention belongs to the technical field of aquaculture, and relates to a catadromous migration salmon breeding method for migratory salmon. The method specifically comprises the following steps:(1) selection of juvenile salmons, wherein the average sampling weight is at least 25g, and the proportion of individuals smaller than 25g is not higher than 10%; (2) during the catadromous migrationperiod, adding an underwater light source at the bottom of the culture pond to ensure that the illumination intensity in the water body at the bottom of the pond is not lower than 20Lux; (3) cultivation in a catadromous migration stage, wherein a light control strategy is as follows: firstly, a light cycle strategy (LD12: 12) of 12 hours of illumination every day and 12 hours of darkness is adopted for 6 weeks, and then the light cycle strategy is converted into 24 hours of illumination every day (LD24: 0) and lasts for 6 weeks as well; and (4) completing the catadromous migration stage. According to the method, the weight of the catadromous migration juvenile salmon is controlled, light rays are controlled, and the form and physiological indexes of the catadromous migration stage are monitored. The catadromous migration rate can be increased by at least 4.9%, the survival rate after s catadromous migration is increased by at least 6.3%, and large-scale cultivation of catadromous migration salmons under the industrialized condition can be achieved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a method for cultivating migratory salmon. Background technique [0002] Salmon is a fish belonging to the genus Salmon of the salmon family (Salmonoidea), commonly known as salmon, and belongs to cold-water fish. According to their different living habits, they can be divided into two types: migratory type and land sealing type. In nature, migratory salmon has a complex metamorphosis process from freshwater smolt to sea salmon in its natural life history, which is called silvering. Salmon landed in the sea can obtain more abundant and nutritionally balanced food resources, and their growth rate is faster than that in fresh water. From an economic point of view, migratory salmon is more suitable for intensive farming, which is characterized by high economic value, fast growth and strong disease resistance. Taking Atlantic salmon as an example, my country spends hundreds of m...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 韩厚伟陈娟杨伟杰薛鹏伟刘淑兰徐宁宁
Owner 国信东方(烟台)循环水养殖科技有限公司
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