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Artificial reproduction method of mandarin fish

An artificial breeding and mandarin fish technology, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of high cost of intensive breeding, low fertilization rate and hatching rate, etc., to reduce reproductive cost, optimize gonadal index, reduce The effect of labor intensity

Inactive Publication Date: 2016-07-20
邵侠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for artificial propagation of mandarin fish in view of the problems of high cost and low fertilization rate and hatching rate of existing intensive culture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method of artificial propagation of mandarin fish. After the beginning of spring, the sexually mature male and female mandarin fish are cultivated separately, and the male mandarin fish is cultivated in a greenhouse pond at 120-150 tails / mu. The aerator is started, and the water depth of the greenhouse pond is 0.5 meters. , flush the water every 5 days, keep the water temperature gradually rising between 16-26°C, and feed the palatable live bait fish regularly to ensure sufficient bait; half a month before breeding, flush the water every two days, every 2 Ozone was charged for 1 hour every day through an ozone generator, and the water temperature was kept at 20-22°C. The feeding amount of live bait fish was reduced by 10%, and granules made from lettuce leaves were used instead; female fish were cultured in cages with a depth of 4m. The net cover is 20cm away from the water surface, the stocking density is 2-3 tails / ㎡, the water temperature is kept at 18-26°C, and the ...

Embodiment 2

[0024] A kind of artificial propagation method of mandarin fish is basically the same as embodiment 1, and difference is:

[0025] (1) One month before breeding, add a mixture of 5% of the daily feeding amount of spirulina and houttuynia root to the bait;

[0026] (2) After induced labor, the ratio of male fish: female fish is 4:2, which is 2:1.

[0027] Under the same conditions of other management methods, appropriately increasing the proportion of mixed material can greatly increase the spawning rate of female broodstock, so the proportion of female fish can be correspondingly reduced.

[0028] Set up a control group. During the intensive breeding stage, the male and female broodstock are mixed and managed according to the conventional method. After induced labor, the ratio of male fish to female fish is 1:1. After the beginning of spring, the intensive breeding starts uniformly. After the fertilized eggs hatch, they are respectively raised under the same conditions. , sta...

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PUM

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Abstract

The invention discloses an artificial reproduction method of mandarin fish. The method comprises steps as follows: parent fish culturing, parent fish selection, artificial spawning induction and fish fry incubation. Compared with the prior art, the artificial reproduction method has the advantages as follows: at the reinforced aquaculture stage of parent fish, male and female parents of the mandarin fish are bred respectively, the breeding process of the male parent is simplified to a certain extent, the female and male parents are managed differently according to physiological characteristics, the sexual maturity stage of the parents is advanced, the gonadosomatic index of male fish is optimized, the quality of ovum and the ovulation amount are improved, the fertilization rate and the hatching rate are further increased, the labor intensity for artificial reproduction and the reproduction cost are reduced, and large-scale popularization of artificial reproduction of the mandarin fish is facilitated.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to an artificial breeding method for mandarin fish. Background technique [0002] Mandarin fish, also known as sweet-scented osmanthus fish, season flower fish, etc., is a rare fish in freshwater fish, including many strains such as squid mandarin fish, big-eyed mandarin fish, spotted mandarin fish, and dark mandarin fish. Due to the lack of natural resources of mandarin fish, artificial reproduction techniques Restricted and relatively slow, the market demand is large, but due to lack of breeding experience, mandarin fish broodstock are usually mixed-feeding, which not only increases the feeding cost of sexual maturation enhancement, is not conducive to management, but also often leads to intensive breeding of broodstock gonads. The index is low, which affects the fertilization rate and hatching rate. Therefore, it is necessary to formulate corresponding breeding ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 邵侠
Owner 邵侠
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