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Method for artificially hatching loaches

A technology of artificial hatching and loach, applied in the direction of climate change adaptation, fish farming, application, etc., can solve the problems of low fertilization rate and hatching rate, immaturity, and small number of spawned eggs, so as to improve hatching rate and seedling rate. , The effect of increasing the oxytocin rate and fertilization rate, and increasing the number of eggs laid

Inactive Publication Date: 2014-10-15
HUAIYUAN KONGJINHU AGRI DEV
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AI Technical Summary

Problems solved by technology

At present, loach parent selection and intensive cultivation technology is not mature enough, and there is no standardized breeding method
When loach parents lay eggs, due to the lack of effective means of inducing spawning, loach parents have low spawning rate, small number of eggs, low fertilization rate and hatching rate, and unsatisfactory emergence number

Method used

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  • Method for artificially hatching loaches
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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] A method of artificial hatching of loach. After the loach parent spawns, the loach parent is taken out, and only the fertilized eggs laid by the loach are left in the pool. The pool water requires cleanness, high transparency, no sediment, no pollution, no enemy pests, the value is 6.5-7.5, and the dissolved oxygen is above 4 mg / L; the hatching water temperature is 25-28°C, and the water temperature difference does not exceed ±3°C. When hatching, a sunshade net is set above the pool to avoid light to eliminate ultraviolet rays. The water flow control adopts the "slow-fast-slow" method, the flow rate is controlled at 0.1 m / s, the flow rate is increased to 0.2 m / s before and after the film is released, and the water flow rate is slowed down to...

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Abstract

The invention discloses a method for artificially hatching loaches, which relates to the field of aquiculture. After laying spawns, loach parents are removed, only leaving the fertilized spawns laid by the loaches in a pond, and pond water is required to be clean and high in transparency, not to contain silt and hostile and harmful creatures and be polluted, and to have the pH value of 6.5 to 7.5 and more than 4mg / L of dissolved oxygen; the hatching water temperature is 25 DEG C to 28 DEG C, the water temperature difference does not exceed plus or minus 3 DEG C, a sunshade net is arranged over the pond to shade light during hatching in order to eliminate ultraviolet injury, a 'slow-fast-slow' mode is adopted as water flow control in the pond, flow velocity is controlled at 0.1m / sec, flow is increased to 0.2m / sec before and after pipping, and after complete pipping, water velocity is decreased to 0.1m / sec; when loach fries can swim parallel, water flow is slowed again in order to prevent the loach fries from excessively consuming strength due to over-fast water flow. The method for artificially hatching loaches, which is provided by the invention, is convenient to operate, and can prevent the loach parents from being injured, the effect of the spawning induction method is good, the spawning induction rate and fertilization rate of the loach parents can be increased, and the number of laid spawns can be increased; the hatching rate and the fry rate are increased.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for artificial hatching of loach. Background technique [0002] Loach (Misgurnus anguillicaudatus) has high nutritional and medicinal value. It has a large demand in the domestic and foreign markets, and the price is relatively good. The artificial breeding has high profits and quick results, and the breeding prospect is promising. The breeding area of ​​loach in China is 15 million to 20 million square meters, mainly concentrated in Jiangsu, Henan, Hubei, Shandong, Anhui and Sichuan, and the breeding mode is mainly pond seine farming with soil. At present, the main factor restricting the benefit of loach breeding is that the growth rate of loach is slow, and the annual growth rate is difficult to reach more than 3 times; parent selection and intensive cultivation of loach are one of the more important and key technical links in artificial breeding of loach. Through selective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 董在良李艳董在好吴浩文
Owner HUAIYUAN KONGJINHU AGRI DEV
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