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Breeding method of masu salmons

A technology of mountain female trout and population, applied in fish farming, application, climate change adaptation, etc., can solve problems such as quality degradation, weakening of stress resistance, genetic drift, etc., to achieve plump body color, fast growth, and postpartum The effect of high survival rate

Inactive Publication Date: 2013-02-13
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problems of genetic drift, weakened stress resistance, germplasm differentiation and quality degradation caused by the small inbreeding of the introduced trout population, the present invention provides a breeding method for trout

Method used

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  • Breeding method of masu salmons
  • Breeding method of masu salmons

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specific Embodiment approach 1

[0053] Specific implementation mode one: the present implementation mode mountain female trout breeding method is carried out according to the following steps:

[0054] 1. Establishment of the F1 generation family line:

[0055] a, the surviving fish of the 2-year-old sexually mature mountain female trout large group after breeding are cultivated to the 3-year-old sexually mature, as the breeding base group;

[0056] B, from the step a, select the number of young salmon spots to be less than 10 mountain female trout;

[0057] c. Use the color difference meter CR-400, choose L * a * b * The color space is used as the data output mode, and the body color of the fish abdomen and the juvenile salmon spot with the lateral line scale as the axis are measured at multiple points, and the average values ​​are calculated respectively, and the abdomen L is selected from the mountain female trout obtained in step b. * Value and spot place L * Shannu trout with a value difference of m...

specific Embodiment approach 2

[0096] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step b, the number of young salmon spots is 8-10, which is selected from step a. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0097] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the color difference meter CR-400 is used in step c, and the L * a * b * The color space is used as the data output mode, and the body color of the fish abdomen and the juvenile salmon spot with the lateral line scale as the axis are measured at multiple points, and the average values ​​are calculated respectively, and the abdomen L is selected from the mountain female trout obtained in step b. * Value and spot place L * Shannu trout with a value difference of more than 25. Others are the same as in the first embodiment.

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Abstract

The invention relates to a breeding method of masu salmons, relating to a breeding method of fishes. The method solves the technical problem that existing introduced masu salmons are featured with genetic drift, weak resistance, germplasm differentiation and quality degradation caused by small group and inbreeding. The method comprises the following steps: 1, establishing an F1-generation family; 2, cultivating the F1-generation family; 3, constructing a self-reproducing system in an F2-generation family and an F2-generation group; 4, breeding the F2-generation group by a three-stage elimination method; 5, constructing an F3-generation group and breeding by the three-stage elimination method; 6, constructing an F4-generation group and breeding by the three-stage elimination method; 7, constructing an F5-generation group and breeding by the three-stage elimination method; and 8, constructing an F6-generation group and breeding by the three-stage elimination method to finish breeding the masu salmons. The masu salmons obtained by using the method are featured with full body color, high growth speed and high postnatal survival rate.

Description

technical field [0001] The invention relates to a fish breeding method. Background technique [0002] Mountain female trout (Oncorhynchus masou masou), belonging to Salmoniformes, Salmonidae, and the genus Salmon, is a land-sealed freshwater species of Masu salmon, and is classified as Masu masou in classification A subspecies, introduced in my country in 1996. People in the country of origin are very fond of this elegant, light and compact salmon that lives in mountain streams. They call it the "Goddess of the Mountain". Domestically respect this cognition , after the introduction, it was called "Shannv trout" in Chinese. The main sign that this fish is different from the sea-falling type or other cold-water fish is that it keeps smolt spots all its life, which is also an important reason why it is popular in the market. However, as an introduced species, Shannu trout had a small initial population and no effective measures were taken to prevent inbreeding during the contin...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 贾智英张玉勇石连玉白庆利
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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