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Cultivation method for hybridized all-female golden trout fries

A breeding method and technology of golden trout, which is applied in the field of hybrid all-female golden trout seedling breeding, can solve the problems such as hybrid all-female golden trout seedlings have not been reported, achieve good economic benefits and market value, and maintain gold The effect of constant trout rate and short seedling time

Inactive Publication Date: 2012-12-12
BEIJING FISHERIES RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the research on the preparation technology of hybrid all-female golden trout fry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 Hybrid all-female seed breeding method (1)

[0028] 1. Dissolve 17α methyl testosterone with alcohol with a purity of 65%. The mass volume ratio of 17α methyl testosterone and alcohol is 1mg: 2ml. After the dissolved methyl testosterone solution is diluted 10 times with water, spray it evenly on the On the broodstock feed, the content of 17α methyltestosterone in the feed was 60mg / kg. Stir repeatedly to make it evenly mixed, and dry it in a ventilated place for later use.

[0029] 2. Select sexually mature female red-eyed golden trout broodstock over 3 years old with a size of 2kg and put them into a separate breeding pond, and feed them with the feed that has been prepared in step 1 containing 17α methyl testosterone, and feed them according to the conventional feeding method After 100 days, they were fed with normal broodstock feed without 17α methyltestosterone for 4 months. Among the female red-eyed golden trout induced by 17α-methyltestosterone and t...

Embodiment 2

[0034] Embodiment 2 Hybrid all-female seed breeding method (2)

[0035] 1. Dissolve 17α-methyltestosterone in alcohol with a purity of 70%, and the mass-volume ratio of 17α-methyltestosterone to alcohol is 1mg: 1ml. After the methyltestosterone solution after dissolving is diluted 10 times with clear water, spray on the parent fish feed evenly with a watering can, make the content of 17α methyltestosterone in the feed be 20mg / kg. Stir repeatedly to make it evenly mixed, and dry it in a ventilated place for later use.

[0036] 2. Select sexually mature female red-eyed golden trout broodstock of 2.1kg or older and put them into a separate breeding pond, and feed them with the feed that has been formulated in step 1. Feed for 120 days, then switch to normal parent fish feed without 17α methyltestosterone and continue to feed for 5 months. Among the female red-eyed golden trout induced by 17α-methyltestosterone and then fed normally, the red-eyed golden trout whose upper jaw was...

Embodiment 3

[0041] Embodiment 3 hybrid all-female seed breeding method (3)

[0042] 1. Dissolve 17α-methyltestosterone with alcohol with a purity of 60%. The mass-volume ratio of 17α-methyltestosterone to alcohol is 1mg: 2ml of the dissolved methyltestosterone solution is diluted 10 times with water and sprayed evenly on broodstock feed with a watering can. Above, make the content of 17α methyltestosterone in the feed be 40mg / kg. Stir repeatedly to make it evenly mixed, and dry it in a ventilated place for later use.

[0043] 2. Select sexually mature female red-eyed golden trout broodstock of 2.15kg or older and put them into a separate breeding pond, and feed them with the 17α-methyltestosterone-containing feed prepared in step 1, and follow the conventional feeding method Feed for 93 days, then switch to normal parent fish feed without 17α methyltestosterone and continue to feed for 5 months. Among the female red-eyed golden trout induced by 17α-methyltestosterone and then fed normal...

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Abstract

The invention provides a cultivation method for hybridized all-female golden trout fries. An androgen is utilized to induce golden trout parent fish in a mature period so as to obtain golden trout pseudo-milter, steelhead parent fish eggs are fertilized with golden trout pseudo-milter sperms, hatching is performed, and the hybridized all-female golden trout fries are obtained. The eyed rate of the fertilized eggs during a hatching period is over 81%, the fry hatching rate is over 92%, the female rate of the obtained fries is 100% by detection, the rate of golden trout (with golden yellow body color) of the fries is over 90%, the weight gaining rate is over 122% after the fries are cultivated for 30 days, and the survival rate is over 98%. Compared with fries generated by purebred golden trout mating, the cultivation method for the hybridized all-female golden trout fries maintains the golden trout rate to be unchanged, enables the golden trout fries having double advantages of being hybridized and all-female to be obtained, and has good economic benefit and market value.

Description

technical field [0001] The invention relates to the technical field of aquatic organism breeding, in particular to a breeding method for hybrid all-female golden trout fry. Background technique [0002] Salmon and trout are currently one of the main farmed fishes in the world. Under natural conditions, they mostly grow in low-temperature hot spring water or clear streams where the water temperature does not exceed 20°C, the water quality is oligotrophic, and there is no chemical or organic pollution. , so it is also called cold water fish. Because salmonids have very high requirements on the quality of living water, they cannot survive with slight pollution. Therefore, salmon and trout are clean and free of any pollution. They are veritable pollution-free green food, and they are safe to eat. In addition, salmon trout is a high-protein, high-fat, low-cholesterol (very little cholesterol) fish. Compared with other fish, salmon and trout contain glycine, which is lacking in ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 徐绍刚
Owner BEIJING FISHERIES RES INST
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