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Method for promoting natural propagation of migratory fish by adopting recirculating aquaculture and propagation system

A technology of recirculating aquaculture and breeding system, applied in the field of aquaculture, can solve the problems of blind induced spawning and low efficiency of artificial insemination and spawning, and achieve the effects of stabilizing the breeding water environment, improving spawning efficiency, and avoiding casualties

Active Publication Date: 2014-01-15
SUZHOU FISHSEEDS BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The third purpose of the present invention is to provide a method to promote the natural reproduction of migratory fish, that is, the method of natural spawning without hormone induction, which mainly solves the artificial breeding of existing migratory fish, especially American shad The blindness of oxytocin and the low efficiency of artificial insemination and oviposition in the method exist

Method used

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  • Method for promoting natural propagation of migratory fish by adopting recirculating aquaculture and propagation system
  • Method for promoting natural propagation of migratory fish by adopting recirculating aquaculture and propagation system

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Such as figure 2 , a bottom water filtration system, comprising a bottom water outlet pool 2, the bottom water outlet pool 2 is connected with a bottom water filtering device, and the bottom water filtering device includes interconnected bottom water filters 15, The bottom water outlet 16 and the bottom water pipe 22, the bottom water filter 15 and the bottom water outlet 16 are arranged inside the bottom water outlet pool 2, and the bottom water pipe 22 is exported to the bottom water outlet pool 2 through the bottom water outlet 16 external. The bottom water outlet pool 2 is also connected with a sewage discharge device, the sewage discharge device includes a sewage discharge port 17 and a sewage discharge pipe 23 communicated with the sewage discharge port 17, the sewage discharge port 17 is located inside the bottom water discharge pool 2, and the sewage discharge The pipe 23 is exported to the outside of the bottom water outlet pool 2 through the sewage outlet 17...

Embodiment 2

[0050] Such as figure 1 , a circulating aquaculture and breeding system, the breeding and breeding system includes a fish pond 13 and an independent bottom water filtration system adjacent to one side of the fish pond 13, the center of the fish pond 13 is provided with a sewage collection outlet 1, and the collection The sewage outlet 1 communicates with the bottom water filtration system described in Embodiment 1 through the bottom water pipe 22 of the fish pond 13 . A circulating aquaculture and breeding system, the breeding and breeding system includes a fish pond 13 and the bottom water filtration system described in Embodiment 1 that is adjacent to and independent from one side of the fish pond 13, and the center of the fish pond 13 is provided with a sewage collection outlet 1. The bottom water pipe 22 connects the sewage collection outlet 1 with the bottom water filtering device.

[0051] The cultivation and reproduction system also includes a bottom water treatment sy...

Embodiment 3

[0053] A method for promoting natural reproduction of migratory fish, comprising the steps of:

[0054] 1) Selection of backup broodstock; in the spring of artificial breeding, select individuals with larger individuals, higher body size, and no blemishes on the body surface, and individuals above the age of 2 winters as backup broodstock.

[0055]2) The establishment of the circulating aquaculture and breeding system; the broodstock breeding and breeding pond can be a round pond or a square cement pond with rounded corners, with an area of ​​50-400 square meters and a water depth of 0.5-3 meters. In broodstock rearing and reproduction systems such as figure 1 As shown, it consists of three parts, namely the fish pond, the bottom water treatment system, and the upper water treatment system.

[0056] 3) Broodstock breeding and nutritional enhancement; feeding 3 to 6 times a day, the daily feeding amount is 1 to 5% of body weight. The feed is seawater fish floating feed (40-44...

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Abstract

The invention discloses a bottom water filtering system and further discloses an imitated ecological recirculating aquaculture and propagation system and a method for promoting natural propagation of migratory fish by adopting the recirculating aquaculture and propagation system. By adopting the method and establishing the recirculating aquaculture and propagation system suitable for integrated growth, development and spawning of the migratory fish, breeding and propagation functions are effectively integrated, and synergic regulation of ecological factors which are necessary during maturation of the migratory fish, especially reeves shad is optimized, so that sexual glands of bred parent fish can synchronously develop and mature under the appropriate, coordinative and controllable ecological conditions, the parent fish can naturally spawn without artificial spawning, and injuries, deaths and gonad development interference caused by hormone injection and catching operation are avoided. The method for promoting the natural propagation of the migratory fish by adopting the recirculating aquaculture and propagation system is simple, reliable and effective and is the key for propagation technology industrialization of the migratory fish, especially the America reeves shad.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for promoting natural reproduction of migratory fish by adopting a circulating aquaculture and breeding system. Background technique [0002] In my country, anadromous fish, including salmon and shad, have gradually become important high-grade aquaculture species. For example, since American shad (Alosa sapidissima) was introduced at the end of the last century, my country imports millions of fertilized eggs from the United States every year, forming an upsurge in breeding American shad. However, since the fertilized eggs of imported American shad are obtained through artificial insemination of wild breeding populations in the Columbia River in the west of the United States, their spawning period is from mid-June to mid-July every year. At this time, the main shad cultured in China The water temperature in areas (including Guangdong, Jiangsu, Zhejiang and Shanghai) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K63/04A01K61/00
CPCY02A40/81
Inventor 刘青华须藤直美
Owner SUZHOU FISHSEEDS BIOLOGICAL TECH CO LTD
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