Cultivating method of oncorhynchus mykiss walbaum gynoecial hybrid offspring seed
A breeding method and technology of golden trout, which is applied in the breeding field of all-female hybrid fry of golden trout, can solve problems such as no reports, and achieve the effects of reducing breeding costs, maintaining the rate of golden trout, and shortening the seedling time
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[0026] Example 1 All-female hybrid seedling breeding method (1)
[0027] 1. Dissolve 17α methyl testosterone in alcohol with a purity of 65%. The mass volume ratio of 17α methyl testosterone to alcohol is 1mg: 2ml. After the dissolved methyl testosterone solution is diluted 10 times with water, spray it evenly with a watering can On the broodstock feed, make the content of 17α methyltestosterone in the feed 60mg / kg. Stir repeatedly to make it evenly mixed and dry in the shade in a ventilated place for later use.
[0028] 2. Select the broodstock of female hardhead trout older than 3 years old, with a size of 2.6kg and sexually mature, and put them into a separate breeding pond, and feed the broodstock feed containing 17α methyltestosterone that has been prepared in step 1, according to the conventional feeding The method was fed for 100 days, and then switched to normal broodstock feed without 17α methyltestosterone for 4 months. Among the female hardhead trouts that were fed nor...
Example Embodiment
[0032] Example 2 Method for breeding all-female hybrid seedlings (2)
[0033] 1. Dissolve 17α methyl testosterone with alcohol with a purity of 70%. The mass volume ratio of 17α methyl testosterone to alcohol is 1mg:1ml. After the dissolved methyltestosterone solution is diluted 10 times with water, it is sprayed evenly on the broodstock feed with a watering can to make the content of 17α methyltestosterone in the feed 20mg / kg. Stir repeatedly to make it evenly mixed and dry in the shade in a ventilated place for later use.
[0034] 2. Select the broodstock of female hardhead trout older than 3 years old, with a size of 2.5kg, and sexually mature, put them into a separate breeding pond, and feed the feed containing 17α methyltestosterone that has been prepared in step 1, according to the conventional breeding method They were fed for 120 days, and then switched to normal broodstock feed without 17α methyltestosterone for 5 months. Among female hardhead trouts that were fed normal...
Example Embodiment
[0039] Example 3 Method for breeding all-female hybrid seedlings (3)
[0040] 1. Dissolve 17α methyl testosterone with 60% alcohol, and the mass volume ratio of 17α methyl testosterone to alcohol is 1 mg: 2ml of the dissolved methyl testosterone solution is diluted 10 times with water and then sprayed evenly on the broodstock feed with a watering can Above, make the content of 17α methyltestosterone in the feed 40mg / kg. Stir repeatedly to make it evenly mixed and dry in the shade in a ventilated place for later use.
[0041] 2. Select the broodstock of female hardhead trout older than 3 years old, with a size of 2.55kg, and sexually mature, put them into a separate breeding pond, and feed the feed containing 17α methyltestosterone that has been prepared in step 1, according to the conventional breeding method After feeding for 90 days, they changed to normal broodstock feed without 17α methyltestosterone and continued feeding for 5 months. Among female hardhead trouts that were f...
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