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Breeding method of masu salmons

A technology of mountain female trout and female trout, which is applied in the field of fish breeding, can solve problems such as genetic drift, weakened stress resistance, and quality degradation, and achieve the effects of high postpartum survival rate, fast growth speed, and plump body color

Inactive Publication Date: 2014-01-08
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
  • Breeding method of masu salmons

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specific Embodiment approach 1

[0053] Specific implementation mode 1: The breeding method of mountain female trout in this embodiment is carried out according to the following steps:

[0054] 1. Establish the F1 generation family:

[0055] a. Cultivate the surviving fish of the 2-year-old sexually mature mountain female trout group after breeding to the third-year-old sexual maturity, as the breeding base group;

[0056] b. From step a, select mountain female trout with less than 10 young salmon spots;

[0057] c. Apply color and color difference meter CR-400, choose L * a * b * The color space is used as the data output mode. Multi-point measurement of the body color of the fish abdomen and juvenile salmon spots with the lateral line scales as the axis, and calculate the average values ​​respectively, and select the abdomen L from the mountain trout obtained in step b * Value and spot L * Mountain female trout with a value difference of more than 20;

[0058] d. Using artificial insemination, the mountain female tro...

specific Embodiment approach 2

[0096] The second embodiment: The difference between this embodiment and the first embodiment is that in step b, a trout with 8-10 young salmon spots is selected from step a. Others are the same as the first embodiment.

specific Embodiment approach 3

[0097] Specific embodiment three: this embodiment is different from specific embodiment one in that the color difference meter CR-400 is used in step c, and L is selected. * a * b * The color space is used as the data output mode. Multi-point measurement of the body color of the fish abdomen and juvenile salmon spots with the lateral line scales as the axis, and calculate the average values ​​respectively, and select the belly L from the mountain trout obtained in step b * Value and spot L * Mountain female trout with a value difference of more than 25. Others are the same as 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 method for breeding fish. Background technique [0002] Mountain female trout (Oncorhynchus masou masou), belongs to Salmonoides, Salmonidae, and Salmon. It is a land-covered freshwater fish species of Masou Salmon and is classified as Masou Salmon. A subspecies, introduced by my country in 1996, people in the country of origin love this salmon, which lives in mountain streams, has an elegant body, and is light and compact, and calls it the "goddess of mountains". The country respects this perception After the introduction, it was called "Mountain Female Trout" in Chinese. The main characteristic of this fish that distinguishes it from lower-sea or other cold-water fish is that it retains juvenile salmon spots throughout its life, which is also an important reason for its popularity in the market. However, as the introduced species of mountain trout, due to the small initial population, effective measures were not taken to prevent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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