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Method for promoting natural reproduction of migratory fish by adopting recirculating aquaculture and breeding 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: 2015-10-28
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 reproduction of migratory fish by adopting recirculating aquaculture and breeding system
  • Method for promoting natural reproduction of migratory fish by adopting recirculating aquaculture and breeding system

Examples

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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 filtration device, the bottom water filtration device sequentially includes bottom water filters 15 connected to each other from top to bottom, 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 led out 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, which includes a sewage outlet 17 and a sewage pipe 23 communicating with the sewage outlet 17, and the sewage outlet 17 is provided inside the bottom water outlet tank 2. The pipe 23 is led out of the bottom water outlet pool 2 through the sewage outlet 17. The filtration system further includes an aeration rin...

Embodiment 2

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

[0051] The breeding and breeding system also includes a bottom water treatment system adjacent to one side of the fish pond 13 and...

Embodiment 3

[0053] A method for promoting natural reproduction of migratory fishes, including the following steps:

[0054] 1) Selection of reserve broodstock; in the spring when artificial breeding is implemented, individuals with larger individuals, taller bodies, and flawless body surfaces above 2 winter ages are selected as reserve broodstock.

[0055] 2) The establishment of the circulating aquaculture and breeding system; the broodstock breeding and breeding ponds can be round ponds or square cement ponds with rounded corners, with an area of ​​50-400 square meters and a water depth of 0.5-3 meters. In broodstock breeding 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 cultivation and nutrition fortification; feeding 3-6 times a day, the daily feeding amount is 1 to 5% of body weight. The feed is made of sea fish floating feed produced by G...

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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 using a circulating aquaculture and breeding system to promote the natural reproduction of migratory fish. Background technique [0002] In my country, anadromous migratory fish including salmon and shad have gradually become important high-end aquaculture species. For example, since the introduction of American shad (Alosa sapidissima) at the end of the last century, my country has imported millions of fertilized eggs from the United States every year, forming a boom in American shad farming. However, because imported American shad fertilized eggs are obtained through artificial insemination of wild breeding populations in the Columbia River in the western United States, the spawning period is from mid-June to mid-July each year. At this time, the main breeding of shad in China The water temperature in regions (including Guangdong, Jiangsu, Zhejiang and Shanghai, et...

Claims

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Application Information

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Patent Type & Authority Patents(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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