Yearly artificial propagation method of mandarin fish

A technology of artificial breeding and mandarin fish, applied in fish farming, application, climate change adaptation, etc., can solve the problems that restrict the sustainable and healthy development of mandarin fish aquaculture, cannot meet the needs of seedlings, and have a low emergence rate in the later stage. Improve the efficiency of artificial propagation, shorten the reproduction cycle, and increase the effect of seedling emergence

Inactive Publication Date: 2019-11-19
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the artificial breeding of mandarin fish in my country mostly adopts the method of breeding once a year, and there are also attempts to reproduce twice or three times a year, but there are problems such as the death of parents, low emergence rate in the later period, and high cost, so few adopt it.
Moreover, the reproduction of mandarin fish is sea

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Conditions for broodstock pond: a circular cement pond with a diameter of 10 meters and a water depth of 2.5 meters. The wall of the pool is equipped with a water injection port and an overflow port, and the drain port is located in the center of the pool bottom, which is slightly lower in the center of the pool bottom, which is convenient for sewage collection and discharge;

[0020] 2. Selection and cultivation of broodstock: Select mandarin fish with good maturity, strong physique, no disease or injury, and weighing about 4-5 kg ​​as broodstock. 80 females and 80 males were mixed in the broodstock pond at a ratio of 1:1 after body surface disinfection, and the stocking density was about 1 fish / cubic meter. The water temperature in the cultivation pond is controlled at 24-30°C. When the temperature is high in summer, a shading shed can be built to reduce the water temperature. During the low temperature period in winter, an insulation shed should be built to mainta...

Embodiment 2

[0029] 1. Conditions for broodstock pond: a circular cement pond with a diameter of 8 meters and a water depth of 2 meters. The wall of the pool is equipped with a water injection port and an overflow port, and the drain port is located in the center of the pool bottom, which is slightly lower in the center of the pool bottom, which is convenient for sewage collection and discharge;

[0030] 2. Selection and cultivation of broodstock: Select mandarin fish with good maturity, strong physique, no disease and injury, and weighing about 3-4 kg as broodstock. 100 female fish and 80 male fish were mixed in the broodstock pond at a ratio of 5:4 after surface disinfection, and the stocking density was about 2 fish / m3. The water temperature in the cultivation pond is controlled at 22-30°C. When the temperature is high in summer, a shading shed can be built to reduce the water temperature. During the low temperature period in winter, an insulation shed should be built to maintain the wa...

Embodiment 3

[0039] 1. Conditions for broodstock pond: a circular cement pond with a diameter of 6 meters and a water depth of 2 meters. The wall of the pool is equipped with a water injection port and an overflow port, and the drain port is located in the center of the pool bottom, which is slightly lower in the center of the pool bottom, which is convenient for sewage collection and discharge;

[0040] 2. Selection and cultivation of broodstock: Select mandarin fish with good maturity, strong physique, no disease or injury, and weighing about 2-3 kg as broodstock. 40 female fish and 20 male fish were mixed in the broodstock pond at a ratio of 2:1 after surface disinfection, and the stocking density was about 1 fish / cubic meter. The water temperature in the cultivation pond is controlled at 22-30°C. When the temperature is high in summer, a shading shed can be built to reduce the water temperature. During the low temperature period in winter, an insulation shed should be built to maintain...

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PUM

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Abstract

The invention discloses a yearly artificial propagation method of mandarin fish. With the adoption of an ecological and physiological adjustment method, baby fish of mandarin fish are born every 20-30days, thus shortening propagation period and greatly increasing yearly birth rate. Since baby fish can be utilized frequently, boby fish can breed 9-12 times, thus improving the utilization rate andartificial propagation efficiency of baby fish, reducing the stock of baby fish and the cost used to cultivate baby fish, and increasing the ecnomic benefits by 6 times and above. According to the propagation method disclosed by the invention, the spawning rate, the fertility rate and the hatching rate of baby fish are high; the quality of fry is good; fry reaching sales specifications of 3 cm whole length are obtained after being cultivated for 5-20 days; the economic benefits of farmers are increased; artificial propagation of mandarin fish is no affected or limited by seasons or time; the long-standing problem of early releasing of fry in cold springs and insufficient fry out of season is solved; fry varieties are supplied year in year out; the purpose of balanced production is achieved; and mass production of mandarin fish fry can be facilitated.

Description

technical field [0001] The invention belongs to the technical field of fish breeding, and in particular relates to a method for artificial breeding of mandarin fish throughout the year. Background technique [0002] Mandarin fish, commonly known as sweet-scented osmanthus fish, fat mandarin fish, etc., belongs to Perciformes, Perciformes, Percisidae, and Siniperca genus. Under natural conditions, it likes to inhabit clean water bodies with lush aquatic plants such as rivers, lakes, and reservoirs. It is a rare and precious fish. of freshwater economically farmed fish. Because of its rich nutrition, delicious meat, rich in protein, less thorns and more meat, it is deeply loved by consumers, has high economic value, and has a broad market prospect. In recent years, the aquaculture area of ​​mandarin fish has continued to increase, and the aquaculture output has continued to increase. In 2018, the national aquaculture output reached 315,900 tons, of which the aquaculture outpu...

Claims

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Application Information

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IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 朱华平马冬梅敖荣浩敖道建黄樟翰樊佳佳苏换换
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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