Mimic ecological propagation method for breeding parent fish of American hilsa herring

A technology of imitating ecology and shad, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of blindness of induction and low spawning efficiency of artificial insemination, improve spawning efficiency and hatching rate, and satisfy market demands. Demand, the effect of reproductive technology difficulty

Inactive Publication Date: 2010-03-17
刘青华
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for imitating the ecological reproduction of American shad cultured parents, which mainly so...

Method used

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Embodiment Construction

[0015] The technical solution provided by the present invention mainly includes: selection of backup broodstock → establishment of an imitation ecological breeding system → breeding of broodstock and nutritional strengthening → adjustment of breeding environment imitating natural seasonal rhythm → selection of mature broodstock → artificial ripening → natural spawning → Collect fertilized eggs → hatch.

[0016] The specific implementation process is as follows:

[0017] Selection of backup broodstock: In the spring of the year before the implementation of artificial breeding, select 1st-year-old fish with larger individuals, higher body size, and no blemishes as backup broodstock.

[0018] The establishment of the imitation ecological breeding system: the broodstock breeding pond is selected as a round pond or a square cement pond with rounded corners, with an area of ​​40-200 square meters and a water depth of 1-2 meters. In the broodstock breeding pond, the circulating wate...

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Abstract

The invention discloses a mimic ecological propagation method for breeding parent fish of American hilsa herring, comprising the following steps: establishing a mimic ecological breeding system suitable for natural growth and maturity of the sexual gland of hilsa herring by adopting a circulation water breeding technique and an automation control technique of water environmental factor; regulatingthe mimic natural seasonal rhythmicity for the major physical factors, water chemical factors, and the like of the breeding environment, including factors such as salinity, water temperature, water flow and period of lighting daily variation while fortification; injecting hormone to the parent fish before the spawning season to promote maturity of the sexual gland, and causing the hilsa herring to spawn naturally through enhance water flow stimulation; arranging a spawn collecting box at a circulation water outlet to collect the germ cells and then placing the germ cells in a semi-floating germ cell separation incubator for incubation. The invention can remarkably improve the spawning efficiency of the parent fish of hilsa herring and the incubation rate of the germ cell, and provide thetechnical support for the industrialization of artificial propagation technique for breeding hilsa herring.

Description

Technical field: [0001] The invention relates to an ecologically imitative breeding method for broodstock of American shad. Water treatment engineering technology and automatic control technology are adopted to establish an ecologically imitative breeding environment suitable for gonad development and spawning of broodstock of shad, so that the gonads of shad are naturally developed and matured and produced naturally. egg method. Background technique: [0002] In the case of Yangtze River shad on the verge of extinction, the sales price of American shad (Alosasapidissima) in the Chinese market is very expensive. In recent years, my country imports millions of fertilized eggs of American shad from the United States every year, forming an upsurge of breeding American shad. However, the fertilized eggs of imported American shad are obtained through artificial insemination of wild breeding populations in the Columbia River in the western United States. The spawning period is fr...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 刘青华
Owner 刘青华
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