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Feeding method for increasing survival rate of juvenile swamp eels

A technology for survival rate and juvenile fish, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of eel enteritis, hemorrhagic disease, insufficient nutrition of bait, affecting the survival rate of juvenile fish, etc., so as to improve the survival rate. rate effect

Active Publication Date: 2017-05-31
SHANGHAI ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, waterworms are basically used as bait for juvenile rice field eels in production, but the nutrition of a single bait is not comprehensive enough, and waterworms need to be disinfected in time, otherwise it is easy to cause ricefield eel enteritis and hemorrhage (Fan Haiping, 2001 ), thus affecting the survival rate of juveniles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A bait and feeding method for improving the survival rate of eel juveniles, comprising the following specific steps:

[0024] 1) Fabrication and installation of net cages: seam open net cages with polyethylene non-nodular mesh. The net mesh of the net cages is 40 mesh. , 1m wide, 100cm high; the cages are fixed in the greenhouse, the draft depth of the cages is 0.3m, and the bottom of the cage is 40cm away from the bottom of the pool; the cages are arranged side by side in a single row, and the distance between each row of cages is about 0.1m;

[0025] 2) Putting aquatic plants: put 1 / 2 area of ​​water floating lotus in the cage, and use 20g / m2 for all aquatic plants before putting in 3 copper sulfate for disinfection for 2 hours;

[0026] 3) Put juvenile fish: 120 days after the aquatic plants were put in, 6-day-old healthy juvenile rice field eels (artificially cultivated in the Changshu production base) were evenly stocked in cages on sunny days, and 400 juvenile ri...

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PUM

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Abstract

The invention discloses a feeding method for increasing survival rate of juvenile swamp eels; the method comprises the steps: stocking juvenile swamp eels in a net cage, casting mixed feed of cladocerans and Limnodrilus hoffmeisteri once every afternoon, and entering a growth phase of juvenile swamp eels 30 days after the cultivation of the juvenile swamp eels. Ceriodaphnia cornuta, Moina macrocopa, Daphnia pulex and Limnodrilus hoffmeisteri which are widely spread, bred fast, fostered easily and rich in nutrition are allocated reasonably according to food intake behaviors according to the juvenile swamp eels having different day-ages, the need of juveniles for nutrition is met, and the method has the advantages of high survival rate of juvenile swamp eels, good convenience of material obtaining, wide applicable range, low cultivation cost, high economic benefit and the like.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a feeding method for improving the survival rate of eel juveniles. Background technique [0002] At present, my country's rice field eel (Monopterus albus) artificial breeding technology is relatively mature, wanton fishing, large-scale use of chemical fertilizers and pesticides in agricultural production, aggravated water pollution, and hardening of ditches, rivers and lakes have led to a sharp decrease in wild rice field eel resources, and the large-scale breeding technology of rice field eels has not yet been developed. Breakthroughs have been made, the emergence of seedlings per unit area is low, the survival rate of seedlings (especially in the juvenile period, that is, the period of no more than 30 days after the yolk sac of eel seedlings basically disappears) is low, and the supply of rice field eel seed is seriously insufficient, which restricts the further development ...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K50/80A23K10/20
CPCA01K61/00Y02A40/81
Inventor 周文宗刘娅琴黄伟伟吕卫光
Owner SHANGHAI ACAD OF AGRI SCI