Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving survival rate of pomfret fry

A technology of survival rate and silver pomfret, applied in fish farming, climate change adaptation, animal feed, etc., to achieve the effect of increasing growth rate and survival rate

Inactive Publication Date: 2010-03-03
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In seed production, rotifers that are strengthened with seawater chlorella or fish oil are usually used to feed fry, and there is no DHA / EPA / ARA ratio for the enhanced bait that improves the growth and development speed and survival rate of silver pomfret larvae.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The specific embodiment of the present invention carries out according to the following steps:

[0014] (1) Collect the gonad tissues of mature silver pomfret broodstock in natural sea areas and silver pomfret larvae in natural sea areas respectively, and use the chloroform-methanol method to measure the fat content of body tissues, using gas chromatography, and using fatty acid standards as reference, and using the normalization method Calculate the fatty acid percentage composition of samples from various sources, and analyze the differences of different incoming samples. It is concluded that the normal body fat content of silver pomfret early larvae is 9.98%, and DHA / EPA / ARA=3.0 / 1.0 / 0.19 in body fatty acid composition ;

[0015] (2) According to the measurement result of step (1), take cuttlefish liver oil, refined fish oil, Duoxikang (rich in DHA and EPA) and peanut oil as raw materials, mix and make DHA / EPA / AEA ratio=2.5 / 1.0 / 0.2 Fortified bait with emulsified oil;...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for improving survival rate of pomfret fry, relates to breeding of pomfret fry, and needs to provide a method for improving survival rate and growth speed of pomfret fry. The method comprises the following steps: measuring a DHA / EPA / ARA proportion in pomfret parent fish tissues and body fatty acid compositions of the pomfret fry, wherein the step is characterized by mixing cuttlefish liver oil, refined fish oil, doxicon and peanut oil to form emulsified oil of which DHA / EPA / ARA proportion is 2.5 / 1.0 / 0.2; adding 0.25 gram, 0.35 gram and 0.45 gram of the emulsified oil into the breeding water in terms of each liter of rotifers to reinforce the rotifers respectively; and feeding the pomfret fry with the rotifers reinforced by adopting the best DHA / EPA / ARA allocation proportion reinforcing baits from the 4th day to the 12th day under the illumination condition of 1,000 to 50,001x at the water temperature of between 20 and 24 DEG C in the water with pomfretfry breeding density of 15,000 to 20,000 fishes per cube. The method is used for breeding the pomfret fry.

Description

Technical field: [0001] The invention relates to a method for cultivating silver pomfret larvae. Background technique [0002] During the cultivation of seawater fish artificial seedlings, the nutritional supply of larvae, especially the level of high unsaturated fatty acids necessary for the growth and development of seawater fish larvae, is one of the main factors affecting the growth rate and survival rate of seawater fishes. Different marine fish larvae and different developmental stage larvae of the same species of marine fish have different requirements for high unsaturated fatty acids in bait. [0003] Studies have shown that the optimal ratio of DHA / EPA / ARA in the early development of turbot larvae is 1.8 / 1.0 / 0.12. Cultivation of juvenile turbot juveniles with fortified live bait with DHA / EPA ratio of 2 / 1 effectively prevented the occurrence of turbot albinism. [0004] The optimal ratio of DHA / EPA in the diet of juvenile seabass is about 2 / 1, and the optimal ratio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K10/20A23K20/158A23K50/80
CPCY02A40/81
Inventor 施兆鸿黄旭雄彭士明
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com