Method for batch breeding of loach fry

A loach and batch technology is applied in the field of batch breeding of loach seed, which can solve the problems such as the inability to form bulk supply, dependence, and low hatching rate of large-sized loach fingerlings, meet technical requirements and low labor intensity, improve the induction rate, and reduce The effect of improving the survival rate of the pond

Inactive Publication Date: 2012-12-26
YANCHENG YANDU DISTRICT AQUATIC PROD TECH EXTENDING STATION
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AI Technical Summary

Problems solved by technology

Seed supply is the biggest bottleneck in my country's current loach artificial breeding. Artificial breeding of loach fry is unstable and the hatching rate is low, especially in the stage of fish fry to large-scale fingerling cultivation. Restricted, large-scale fish species of loach cannot be supplied in batches, resulting in commercial loach farming still relying on the fishing of natural wild larvae

Method used

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Embodiment Construction

[0011] The method for the batch breeding of loach seed comprises the steps:

[0012] A, select the loach parent of reproduction to carry out prenatal intensive cultivation;

[0013] b. Construction of 3-level filter storage tank equipment for laying eggs and hatching;

[0014] c. Select dioconone maleate and salmon release hormone analogue mixture as oxytocic agent to catalyze the male and female brood loach. Every kilogram of female loach uses 10-15mg catalyst, and every kilogram of male loach uses 5-7.5mg catalyst. The loach is grouped according to the ratio of mantissa 1:2 to allow it to lay eggs and fertilize in the cage in the tank, then take out the parent loach and let the loach eggs continue to hatch, and produce loach fry on a large scale;

[0015] d. After feeding the open bait, the loach seedlings go to the pond. According to the organ development characteristics of the loach seedlings, grasp the timing of feeding habits transformation, choose suitable bait for sci...

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Abstract

The invention discloses a method for batch breeding of loach fry, which notably improves catalytic production rate of the loach. The method comprises the steps of: a, selecting loach parent for breeding to perform prenatal strengthening cultivation; b, building a third-level filtering reservoir device for spawning and hatching; c, selecting composite of the maleic acid domperidone and the trout luteinizing hormone releasing hormone analogue as a catalyst to catalyze male and female loaches, wherein per kilogram of female loaches need 10-15mg of the catalyst; per kilogram of male loaches need 5-7.5mg of the catalyst; enabling the female loaches and the male loaches to spawn and inseminate in a net cage in the jar according to the ratio of the female loaches to the male loaches being 1:2; taking out the loaches, enabling the spawns to continuously hatch; producing loach fry in a large scale; d, feeding the initial feed, putting the loaches to the pond; according to organ development characteristic of the loach fry, controlling diet conversion time point, electing palatable bait, scientifically feeding the bait, and strengthening water quality and disease control and prevention.

Description

technical field [0001] The invention relates to a method for batch breeding of loach seedlings. Background technique [0002] Loach element is known as ginseng in water, and has high medicinal and edible health value. In recent years, the international trade and domestic market demand for loach has increased greatly, and the price has continued to rise, and artificial breeding has gradually attracted people's attention. Seed supply is the biggest bottleneck in my country's current loach artificial breeding. Artificial breeding of loach fry is unstable and the hatching rate is low, especially in the stage of fish fry to large-scale fingerling cultivation. Due to the constraints, large-scale fish species of loach cannot be supplied in batches, resulting in commercial loach breeding still relying on the fishing of natural wild larvae. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for batch breeding of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 宋长太蔡金红王忠
Owner YANCHENG YANDU DISTRICT AQUATIC PROD TECH EXTENDING STATION
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