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Artificial breeding method for wallago bleeker

A technology of artificial breeding and fork-tailed catfish, applied in fish farming, application, climate change adaptation, etc., can solve problems such as low hatching rate, increased cost of broodstock, low fertilization rate, etc., to meet the needs of high yield, reliable technical support, The effect of high fertilization rate

Inactive Publication Date: 2016-11-09
HUANENG LANCANG RIVER HYDROPOWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing artificial reproduction technology needs to dissect the male fish and take its testis for artificial insemination, which leads to an increase in the cost of broodstock, and has the disadvantages of low fertilization rate and low hatching rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for artificial propagation of catfish, comprising the following steps:

[0017] a. Select sexually mature catfish females over 4+ years old and sexually mature catfish catfish over 3+ years old, and the ratio of female to male is 1:1;

[0018] b. Inject the following exogenous hormones into the female catfish catfish to induce gonad maturation in catfish catfish: inject 3 μg luteinizing hormone releasing hormone A per kilogram of fish body weight ２ (LRH-A 2 ) after the first injection, the second injection was given 12 hours later, and 9 μg of luteinizing hormone-releasing hormone A was injected per kilogram of fish body weight during the second injection ２ (LRH-A 2 ) + 6mg dioconone maleate (DOM);

[0019] Simultaneously with the second injection of catfish females, the following exogenous hormones were injected intrapleurally into catfish males to induce gonad maturation: 12 μg luteinizing hormone-releasing hormone per kilogram of fish body weight A ２ (L...

Embodiment 2

[0023] A method for artificial propagation of catfish, comprising the following steps:

[0024] a. Select sexually mature catfish females over 4+ years old and sexually mature catfish catfish over 3+ years old, and the ratio of female to male is 1:1;

[0025] b. Inject the following exogenous hormones into the female catfish catfish to induce gonad maturation in catfish catfish: inject 3 μg luteinizing hormone releasing hormone A per kilogram of fish body weight ２ (LRH-A 2 ) after the first injection, the second injection was given 12 hours later, and 9 μg of luteinizing hormone-releasing hormone A was injected per kilogram of fish body weight during the second injection ２ (LRH-A 2 ) + 6mg dioconone maleate (DOM);

[0026] Simultaneously with the second injection of catfish females, the following exogenous hormones were injected intrapleurally into catfish males to induce gonad maturation: 12 μg luteinizing hormone-releasing hormone per kilogram of fish body weight A ２ (L...

Embodiment 3

[0030] A method for artificial propagation of catfish, comprising the following steps:

[0031] a. Select sexually mature catfish females over 4+ years old and sexually mature catfish catfish over 3+ years old, and the ratio of female to male is 1:1;

[0032] b. Inject the following exogenous hormones into the female catfish catfish to induce gonad maturation in catfish catfish: inject 3 μg luteinizing hormone releasing hormone A per kilogram of fish body weight ２ (LRH-A 2 ) after the first injection, the second injection was given 12 hours later, and 9 μg of luteinizing hormone-releasing hormone A was injected per kilogram of fish body weight during the second injection ２ (LRH-A 2 ) + 6mg dioconone maleate (DOM);

[0033] Simultaneously with the second injection of catfish females, the following exogenous hormones were injected intrapleurally into catfish males to induce gonad maturation: 12 μg luteinizing hormone-releasing hormone per kilogram of fish body weight A ２ (L...

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PUM

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Abstract

The invention provides an artificial breeding method for wallago bleeker, and belongs to the technical field of aquaculture. The method comprises the steps that sexually mature female wallago bleeker and sexually mature male wallago bleeker are selected based on the ratio of 1:1, exogenous hormone is injected into chests to induce wallago bleeker gonadal maturation, 12 micrograms of luteinizing hormone-releasing hormone A2 (LRH-A2) and 6 mg of maleic acid domperidone (DOM) are injected to each kg of wallago bleeker two times for female wallago bleeker and one time for male wallago bleeker, then, the wallago bleeker is placed in a spawning pond with the bottom paved with an artificial fish spawning nest, the effect is achieved for 8 h at the temperature of 25-27 DEG C, the female wallago bleeker and the male wallago bleeker complete natural egg laying and fertilization on the fish spawning nest, the spawning nest with fertilized eggs in the spawning pond is fished out and placed into a flow water incubation grooves for incubation, and therefore wallago bleeker fry is obtained. The process of killing male wallago bleeker to obtain spermary for artificial fertilization is not needed, a large number of wallago bleeker fertilized eggs can be obtained, the fertilization rate is high, the incubation rate is high, the temperature adaptability is high, and the yield is high.

Description

technical field [0001] The invention relates to an artificial propagation method of catfish, which belongs to the technical field of aquaculture. Background technique [0002] Catfish Wallago Bleeker It is a ferocious large carnivorous fish distributed in the lower reaches of the Lancang River. Fork-tailed catfish grows fast. In the year of spawning, you can get more than 1 kg of fork-tailed catfish. At 1+ age, it can exceed 2 kg. The yield is very high, and the meat is tender and tastes good. However, the existing artificial reproduction technology needs to dissect the male fish and take its testis for artificial insemination, which leads to an increase in the cost of the broodstock, and has the disadvantages of low fertilization rate and low hatching rate. Therefore, it is necessary to study new artificial breeding methods to reduce the cost of broodstock, improve the fertilization rate and hatchability, and meet market demand. Contents of the invention [0003] The ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/00
Inventor 薛晨江郭朝辉罗永新王烈恩马建颜王海龙薛绍伟欧阳习斌雷春云梅传保王文玉孙昳张正兴代方舟邢敦翔杨明忠
Owner HUANENG LANCANG RIVER HYDROPOWER
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