Octopus larva initial baits and production method thereof

A technology of opening bait and production method, which is applied in the direction of animal feed, animal feed, application, etc. It can solve the problems of increasing new species in seawater culture, affecting the development of aquaculture industry, and killing a large number of larvae, so as to achieve long activity retention time and improve opening efficiency , the effect of improving the survival rate

Inactive Publication Date: 2011-05-11
ZHEJIANG OCEAN UNIV
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, the opening feeding stage of early larvae is a critical period of early fish development, and a large number of larvae often die. The lack of sufficient palatable exogenous bait is one of the main reasons for the death of larvae, which affects the development of the aqua

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

[0018] Example: Octopus larval open bait, which contains rotifers, Artemia nauplii, and Euglena gracilis; Rotifer and Artemia nauplii according to the number ratio of 9:1 to 1:9; Euglena gracilis and rotifer And Artemia nauplii according to the number ratio of 40:1 to 55:1.

[0019] The optimization measures adopted include: Rotifers and Artemia nauplii are all cultivated with Euglena gracilis for 4 hours to 9 hours; Euglena gracilis is cultivated with n-3HUFA intensified solution, and n-3HUFA enhances the solution of DHA and EPA. The mass ratio is 3:1 to 4:1.

[0020] The method for producing open bait for octopus larvae is characterized by the following steps:

[0021] ① Steps for strengthening Euglena gracilis: add n-3HUFA fortification solution with seawater that has been precipitated, filtered and boiled, and then inoculated with Euglena gracilis species; cultivation temperature is 24℃, continuous light, intensity is 3000lx, salinity is 22‰, The pH is 7.2, the air stone is sli...

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 octopus larva initial baits and a production method thereof. The octopus larva initial baits provided by the invention contain wheel animalcules, artemia nauplii and euglena gracilis, wherein the number ratio of the wheel animalcules to the artemia nauplii is 9: 1 to 1: 9; and the number ratio of the euglena gracilis to the wheel animalcules and the artemia nauplii is 40: 1 to 55: 1. The ratio of the wheel animalcules to the artemia is adjusted according to the octopus larva cultivating time, so the overall mouth opening efficiency of the octopus larva can be improved; and part of octopus larvae which develop slowly are compensated with a small amount of wheel animalcules for further cultivation. The production method for the octopus larva initial baits comprises: (1) a step of strengthening the euglena gracilis; (2) a step of cultivating bait microbes; and (3) a step of mixing. The produced baits have long activation time and are tasteful, so the mass octopus larva production can be carried out under artificial conditions, the survival rate of the octopus larvae can be improved, and the octopus larvae have uniform feeding amount after opening mouth.

Description

Technical field [0001] The invention relates to an open bait for aquatic seedlings and a production method thereof, in particular to an open bait for octopus larvae and a production method thereof. Background technique [0002] Most octopuses are shallow-sea species, but there are also a few deep-sea species. The inner shell of the octopus is degraded, and only two small shell needles remain on both sides of the back, without a light emitter. The female has a pair of fallopian tubes. The benthic life of the main camp crawls on the bottom of the sea, and can also parade briefly in the bottom seawater by virtue of the reaction of the water jet from the funnel. It has short-distance reproductive and overwintering migratory habits, and feeds on lobsters, shrimps, crabs, shellfish and benthic fish. It is often a prey target for sharks and moray eels. The spawning amount of different species of octopus varies greatly, ranging from several thousand to more than one hundred thousand....

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
IPC IPC(8): A23K1/18A01K67/033A23K50/80
Inventor 吴常文迟长凤徐佳晶
Owner ZHEJIANG OCEAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap