Method for rearing hybrid salmon seeds

A cultivation method and salmon seedling technology are applied in the field of breeding of hybrid salmon seedlings, which can solve the problems of unsuitable breeding of the hybrid seedlings of fine-scale salmon and broccoli, cumbersome cultivation techniques, and difficulty in industrialization, and achieve easy popularization and demonstration. , The effect of high opening mortality and easy operation

Inactive Publication Date: 2012-07-11
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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Problems solved by technology

[0004] The present invention aims to solve the problem of the high mortality rate in the cultivation of hybrid salmon seedlings obtained from the mating of leonid salmon and jelly salmon, and that the seedling cultivation techniques

Method used

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Experimental program
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specific Embodiment approach 1

[0011] The specific embodiment one: the cultivation method of the hybrid salmon fry of the present embodiment is carried out according to the following steps: one, by the density of 5000 fertilized eggs of each 30cm * 45cm small flat column groove, the hybrid salmon fertilized egg is put into the sterilized small flat column In the tank, hatch under dark conditions until the larvae rupture the membrane, and remove the egg skin, dead eggs and dead seedlings during the membrane rupture; 2. After the larvae float up, they are reared at a density of 10,000 fish in each 45cm×2.5m large parallel tank. The hybrid salmon larvae were fed with daphnia as the biological bait during the opening stage. After the larvae opened for 7 to 10 days, they were fed with water earthworms for 5 to 7 days, and then fed with mud made of water earthworms and full-price compound feed for 5 days. ~7 days, and then fed with full-price compound feed. The feeding method of the above-mentioned feeds was: 6 ti...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that: the hatching temperature of the fertilized eggs in Step 1 is 8-12°C. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment is different from Embodiment 1 in that: the hatching temperature of the fertilized eggs in Step 1 is 10°C. Others are the same as in the first embodiment.

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Abstract

A method for rearing hybrid salmon seeds is used for solving the problems that presently, death rate of hybrid salmon seeds obtained by mating Brachymystax lenok with taimen is high, and techniques of rearing seeds of other salmon species is highly complex and difficult to industrialize and is unsuitable for rearing hybrid seeds of Brachymystax lenok and taimen. The method includes: placing fertilized eggs of hybrid salmon into sterilized parallel tanks, incubating the fertilized eggs in the shade till fry begin hatching, and removing egg skin, dead eggs and dead fry during hatching; and using water fleas as biological bait for feeding when hybrid salmon fry open mouths, using Tubificidae to feed the fry on the seventh day to the tenth day after mouth opening, mixing Tubificidae with complete feed into muddy feed for feeding, and using the complete feed to feed the fry. Hybrid salmon seeds reared by the method are high in quality, and the survival rate can be increased to more than 80%.

Description

technical field [0001] The invention relates to a method for cultivating hybrid salmon seedlings. Background technique [0002] Both Brachymystax lenok and Hucho taimen belong to the order Salmoniformes and the family Salmonidae, and are divided into the genera Brachymystax and Hucho. Endangered grade: All are vulnerable, and all belong to the second-class national protected animals. Thin scale salmon is rich in nutrition, tender and delicious, easy to domesticate, and is favored by consumers; jerk salmon has fast speed, large body, and many edible parts, but it is difficult to domesticate. The hybrid between the distant genera of linden salmon and jelly salmon has the characteristics of fast growth, easy domestication and delicious meat. However, there is a problem of high mortality in the breeding process of the hybrid salmon seedlings obtained from the mating of lentinus salmon and jelly salmon. [0003] The offspring of hybrid salmon were obtained by crossing the fema...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 徐革锋牟振波刘洋李永发
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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