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Low-cost propagation method of bass

A low-cost perch technology, applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of low fertilization rate and hatching rate, high cost of intensive breeding, optimize gonad index, reduce labor intensity and reproduction cost , Improve the effect of fertilization rate and hatching rate

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

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-cost breeding method for perch 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 low-cost breeding method for perch. After the beginning of spring, the sexually mature male and female perch are cultivated separately. The male perch is cultivated in a greenhouse pond at a rate of 5-6 per square meter. The aerator is turned on. The water depth of the greenhouse pond is 0.5 meters. The temperature is 2.8-3.2%, the PH value is 7.2-8, flush the water every 4 days, keep the water temperature gradually rising between 8-18°C, and feed the palatable live bait fish regularly to ensure sufficient bait; 1 month, flush once every 2 days, fill with ozone for 1 hour every 3 days, keep the water temperature at 16-20°C, reduce the feeding amount of live bait fish by 10%, and use lettuce leaf pellets instead ;Female fish are cultured in net cages, the depth of the net cage is 3m, the net cover is 20cm away from the water surface, the salinity is 2.3-2.6%, the pH value is 6.5-7.2, the stocking density is 6-8 fish / ㎡, and the water temperature is kept at 10-20 ℃ gradu...

Embodiment 2

[0023] A kind of low-cost breeding method of perch is basically the same as embodiment 1, the difference is:

[0024] (1) One month before breeding, add a mixture of 3% of the daily feed amount of spirulina and Houttuynia root to the bait;

[0025] (2) After induced labor, the ratio of male fish: female fish is 1:2.

[0026] 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.

[0027] 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. , statistics and record the corresp...

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PUM

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Abstract

The invention discloses a low-cost propagation method of bass. The method comprises steps as follows: parent bass culture, parent bass selection, artificial spawning induction and fry hatching. Compared with the prior art, the method has the advantages as follows: at the intensified culture stage of parent bass, male and female parents of the bass are cultured respectively, different management is performed according to physiological characteristics of the male and female parents, so that the sexual maturity period of the parents is advanced, the gonad index of male bass is optimized, the ovum quality and the ovulation amount are increased, the fertilization rate and the hatching rate are increased, the labor intensity and the propagation cost for artificial propagation are reduced, and large-scale popularization of artificial propagation of the bass is facilitated.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a low-cost breeding method for perch. Background technique [0002] Perch belongs to Perciformes, Perch subfamily, euryhaline fish. It is distributed in the coastal areas of my country and has abundant resources. It has the characteristics of fast growth, wide adaptability, strong disease resistance, and delicious meat. It is very popular among people. The peak breeding period of perch is from March to May. In the early stage of this stage, due to the unstable weather and temperature, the breeding of perch will often be affected to a certain extent. Improving the reproduction rate will greatly increase the cost of breeding and breeding, so a relatively low-cost breeding method is needed. Contents of the invention [0003] The object of the invention is to provide a low-cost breeding method for perch to solve the problems of high cost and low fertilization rate an...

Claims

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Application Information

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IPC IPC(8): A01K61/00A23K50/80A23K10/22A23K10/30
CPCA01K61/00Y02A40/81Y02A40/818
Inventor 邵侠
Owner 邵侠
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