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Loach fish fry artificial propagation method

A technology of artificial breeding and fish fry, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems such as the breeding of loach seedlings restricting the development of loach industry, achieve good economic benefits, improve survival rate, and increase the effect of induced labor rate

Inactive Publication Date: 2013-05-22
SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The breeding problem of loach seedlings has become a bottleneck restricting the development of loach industry

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with the examples.

[0028] 1. Breeding and selection of broodstock

[0029] 30 days before hatching, select 3-year-old broodstock, and separate male and female fish into ponds for intensive cultivation. The feed is loach compound feed with a protein content of 33.5%, and 100 mature and healthy female fish are selected. They are large and prominent, with holes round and red, with a total length of 14.5-23.55 cm and a weight of 20.25-62.80 g; 130 mature and healthy male fish were selected, with bright color and intact skin, a total length of 15.12-19.13 cm, and a weight of 17.42-33.47 g.

[0030] 2. Artificial induced labor

[0031] When the water temperature is 24°C-26°C, select broodstock (female to male ratio 1:1.3) from the holding pond to induce labor. The injectable drug is a luteinizing releasing hormone analogue (LRH-A 2 ), dioconone maleate (DOM) and chorionic gonadotropin (HCG), and the thr...

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Abstract

The invention discloses a loach fish fry artificial propagation method. The loach fish fry artificial propagation method comprises the following steps: parent fish rearing and selecting; artificial induction; fertilization process; and fertilized egg hatching process. The loach fish fry artificial propagation method can excellently improve induction rate, fertilization rate and hatching rate, and especially improves post-natal survival rate of the parent fish. The loach fish fry artificial propagation method can achieve loach fish fry industrialized production, provides offspring seeds for large-scale farming, and acquires excellent economic efficiency, by using the loach fish fry artificial propagation method the post-natal survival rate of the parent fish is 90.87 percents, increasing by 40.87 percents; the induction rate is 91 percents, increasing by 11 percents; the fertilization rate is 96.67 percents, increasing by 1.67 percents; and the hatching rate is 91.07 percents, increasing by 11.07 percents.

Description

technical field [0001] The invention relates to freshwater fish breeding technology, in particular to an artificial breeding method for 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". In recent years, loach has become an important aquaculture target because of its strong adaptability, less disease, high survival rate, convenient transportation and easy bait. [0003] At present, the seedlings of loach farming in my country are mainly wild seedlings caught manually. Due to the pollution of chemical fertilizers, pesticides, industrial wastes, etc., the wild resources of loach have decreased sharply, and the resources of wild seedlings can no longer meet the needs of large-scale farming. The artificial breeding of loach has been reported since the early 1980s, but a mat...

Claims

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Application Information

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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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