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Method for nutritionally regulating cynoglossus semilaevis gunther parent fish in Yellow River mouth to breed high-feminisation fry

A semi-smooth tongue sole, nutrition regulation technology, applied in fish farming, climate change adaptation, application and other directions, can solve the problems of not finding academic papers published, the ratio of male and female troubles farmers, etc., to save breeding costs and promote development.

Active Publication Date: 2019-08-30
利津县双瀛水产苗种有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Semi-smooth tongue sole seedling cultivation is mainly based on industrial workshop cultivation. So far, the problem of sex ratio of semi-smooth tongue sole seedlings has been bothering farmers, and no relevant academic papers have been published

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1 Environmental conditions

[0035] 1.1 Site Selection

[0036] Choose areas with sufficient sea water sources, no pollution, convenient drainage, sufficient groundwater sources, convenient transportation, sufficient electricity and fresh water sources to build farms.

[0037] 1.2 Water quality conditions

[0038] The water quality of the water source complies with the regulations of GB / 11607, and the cultivation water complies with the regulations of NY5052.

[0039] 2 species, seedling cultivation facility

[0040] Reservoirs, sedimentation tanks, sand filters (sand filter tanks), aeration facilities, heating and cooling facilities, broodstock breeding ponds, seedling cultivation ponds.

[0041] 3 parent fish selection

[0042] 3.1 Source

[0043] One is that wild fish caught in natural sea areas can be used as broodstock after artificial domestication and nutritionally enhanced cultivation. The second is to select individuals with fast growth rate and excellent...

Embodiment 2

[0103] A method for nutritionally regulating the breeding of highly feminized seedlings of half-smooth tongue sole broodstock in the Yellow River Estuary, including: parent source and selection, daily management,

[0104] (1) Source and selection of parents: select 100 broodstocks (female) of 3-4 age half-smooth tongue sole that have been bred once, 1000 in total. To ensure the purity of the breeding fish, 500 wild half-smooth tongue sole broodstock were purchased, with an average weight of about 2kg. The weight of broodstock in each pond is 100kg.

[0105] (2) Daily management: Monitoring indicators include conventional water quality indicators such as temperature, salinity, dissolved oxygen, pH value, ammonia nitrogen, etc., record the daily and quarterly changes of various physical and chemical indicators and adjust accordingly to maintain the stability of water quality. The double-toothed clamworm feeds. The water is filtered with sand, and the water body is clear and tra...

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Abstract

The invention relates to the technical field of cynoglossus semilaevis gunther breeding, in particular to a method for nutritionally regulating cynoglossus semilaevis gunther parent fish in the YellowRiver mouth to breed high-feminisation fry. The method comprise the steps of parental source and selection, parent fish breeding, artificial oxytocin insemination and hatching and fry culture. Accordingly, by optimizing the regulation mode, strengthening nutrition through perinereis aibuhitensis grube and regulating temperature for spawning and fertilization, the fertilization rate is 83.5%, thehatching rate is 74.6%, and the ratio of female to male is 5:2. The female rate problem of farmers is solved, the breeding cost of the farmers is greatly reduced, direct huge economic benefits are brought to the majority of the farmers, and development of the factory aquaculture industry of cynoglossus semilaevis gunther is further promoted.

Description

technical field [0001] The invention relates to the technical field of half-smooth tongue sole reproduction, in particular to a method for breeding highly feminized fry of half-smooth tongue sole broodstock in the Yellow River estuary by nutritional regulation. Background technique [0002] Semi-smooth tongue sole is an important economic seawater fish in northern my country. Its meat is tender, delicious and nutritious. The meaning of eating tongue sole food. In recent years, incidents such as the turbot drug crisis in seawater fish farming have had a great impact on the seawater fish market. The market demand is large, and the catch is small, which cannot meet the market demand; although artificial breeding and cultivation have been carried out for many years, due to the difficult breeding technology and the high male ratio of seedlings, the final commercial fish production is not high, which has not been able to meet the market demand. [0003] Semi-smooth tongue sole is...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 杨建新徐扬涛陈守温王旭宋其峰张廷丽
Owner 利津县双瀛水产苗种有限责任公司
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