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A technology of artificial breeding and fish fry, applied in fish farming, application, climate change adaptation, etc., can solve the problems such as the survival rate of the species hindering the development of the loach industry, and achieve the effect of improving the survival rate of the pond, easy to implement, and good practicability
Inactive Publication Date: 2013-05-22
SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI
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The survival rate of loach seedlings has bee
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Embodiment 1
[0033] (1) Production and hatching process.
[0034] ① Breeding and selection of broodstock. 30 days before hatching, select 3-year-old broodstock, separate the male and female fish for intensive cultivation, and feed loach compound feed with a protein content of 33.5% (produced by Huaian Dajiang Aquatic Feed Co., Ltd.), and the daily feeding amount is 5% of the broodstock body weight , the male fish should have obvious marriage color, bright body color, and weigh more than 20g. Mature female fish should have a plump and soft abdomen, large and protruding mastoids in the genital pores, a round hole showing a blush, and a weight of more than 30g.
[0035] ② artificial induced labor. When the water temperature was 24°C, broodstock (female to male ratio 1:1.3) were selected from the holding pond to induce labor. The injection drug is the luteinizing releasing hormone analog (LRH-A) produced by Ningbo Biopharmaceutical No. 3 Factory 2 ), dioconone maleate (DOM) and chorionic g...
Embodiment 2
[0046] (1) Production and hatching process.
[0047] ① Breeding and selection of broodstock. 40 days before hatching, select 3-year-old broodstock, separate the male and female fish for intensive cultivation, and feed loach compound feed with a protein content of 33.5% (produced by Huaian Dajiang Aquatic Feed Co., Ltd.), and the daily feeding amount is 8% of the broodstock body weight , the male fish should have obvious marriage color, bright body color, and weigh more than 20g. Mature female fish should have a plump and soft abdomen, large and protruding mastoids in the genital pores, a round hole showing a blush, and a weight of more than 30g.
[0048] ② artificial induced labor. When the water temperature was 26°C, broodstock (female to male ratio 1:1.5) were selected from the holding pond to induce labor. The injection drug is the luteinizing releasing hormone analog (LRH-A) produced by Ningbo Biopharmaceutical No. 3 Factory 2 ), dioconone maleate (DOM) and chorionic g...
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Abstract
A loach fish fry artificial cultivation method is characterized by comprising spawning and hatching process, 7-day (d) fish fries cultivation and 15 d fish fries cultivation, wherein the spawning and hatching process comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. A loach fish fry reinforced cultivation method comprises the following steps: adopting indoor flat surface slot to cultivate the 7 d fish fries and the 15 d fish fries, reinforced culturing fish fries, stocking loach fish fries to a pond after the 7 d fish loach fish fries and the 15 d fish fries grow up, and thereby greatly improving fish fry indoor cultivating survival rate and fish dries pond descending survival rate. A result of an experimental research shows that: the indoor cultivating survival rate of the 7 d fish fries reaches up to 87.8 percents, the pond descending survival rate reaches up to more than 30 percents, the 15 d fish fries reaches up to 92.6 percents, and the pond descending survival rate reaches up to more than 50 percents. The loach fish fry artificial cultivation method is scientific and rational, easy to implement, and good in practicability. By using loach fish fry artificial cultivation method, the fish dries pond descending survival rate can be greatly improved, and good economic benefit can be obtained.
Description
technical field [0001] The invention relates to a method for artificially cultivating freshwater fish fry, in particular to a method for artificially cultivating loach fry. Background technique [0002] Loach (Misgurnus anguilicaudatus) was originally a wild species, belonging to Cyprinidae, Loachidae, and Loach genus. Because of its delicious taste, tender meat and rich nutrition, it is known as "ginseng in water". At present, the seedlings needed for loach breeding in my country are mainly wild seedlings caught by hand. Due to the pollution of chemical fertilizers, pesticides and industrial wastes used in modern agriculture, the wild loach resources have decreased sharply, and the resources of wild seedlings can no longer meet the requirements. The need for large-scale farming. [0003] Artificial breeding of loach has been reported since the beginning of the 1980s, but the seed breeding technology is not up to the standard. The larvae are cultivated indoors for 5d-7d, a...
Claims
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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 丁辰龙孙骥王信海姜爱兰王宣朋蔺玉华段树华姜杨
Owner SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI
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