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Artificial multiplication method of epinephelus polyphekadion

A technology of artificial reproduction and grouper, which is applied in the field of artificial reproduction of cedar grouper, can solve the problems of parent fish death, low hatching rate, poor control of culture conditions, etc., and achieve good development effect

Active Publication Date: 2018-01-12
HAINAN CHENHAI AQUATIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is more difficult to cultivate the fir spot
Large-scale artificial breeding production has not yet been realized
[0003] The breeding of parents is an important reason affecting the development of artificial breeding of grouper. Insufficient nutrition makes it difficult for the broodstock to develop rapidly. Excessive nutrition makes the body of the broodstock accumulate too much fat. Poor control of the culture conditions will also lead to a large number of broodstock. Death, low fertilization rate, low hatching rate, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of artificial propagation method of fir grouper, comprises the following steps:

[0033] (1) Parent selection

[0034] a. Female parent: select the grouper 7 years old, with a body weight of 3-4 kg, normal body shape, no disease, and strong vitality as the female parent;

[0035] b. Male parent: select a grouper with a body weight of 4 to 10 kg, normal body shape, no disease, and strong vitality as the male parent over the age of 8;

[0036] (2) Parental cultivation

[0037] a. Breeding density: 75 tails / mu, female: male = 3:1;

[0038] b. Daily cultivation: Cultivate in the natural water temperature of the open-air pond, and at the same time carry out water quality management; the types of daily cultivation feed are frozen blue round squid and mackerel with good freshness. times, each feeding amount is 2% of the broodstock body weight;

[0039] c. Intensive cultivation: When the water temperature rises to 25°C, intensive cultivation can be started, and water...

Embodiment 2

[0053] A kind of artificial propagation method of fir grouper, comprises the following steps:

[0054] (1) Parent selection

[0055] a. Female parent: select the grouper 7 years old, with a body weight of 3-4 kg, normal body shape, no disease, and strong vitality as the female parent;

[0056] b. Male parent: select a grouper with a body weight of 4 to 10 kg, normal body shape, no disease, and strong vitality as the male parent over the age of 8;

[0057] (2) Parental cultivation

[0058] a. Breeding density: 100 tails / mu, female: male = 4:1;

[0059] b. Daily cultivation: Cultivate in the natural water temperature of the open-air pond, and at the same time carry out water quality management; the types of daily cultivation feed are frozen blue round squid and mackerel with good freshness. times, each feeding amount is 3% of the broodstock body weight;

[0060] c. Intensive cultivation: When the water temperature rises to 25°C, intensive cultivation can be started, and wate...

experiment example

[0081] Measure the fertilization rate and the hatching rate of the artificial propagation of the grouper in the above-mentioned examples and comparative examples respectively. The results are shown in the table below.

[0082]

[0083] Can know according to experimental result, the present invention provides a kind of artificial reproduction method of fir grouper, adopt the method of the present invention to lay eggs of broodstock higher than comparative ratio, fertilization rate reaches more than 99.2%, and the hatching rate of fertilized eggs reaches more than 99.5% , Fertilization rate and hatching rate were significantly improved compared with the control.

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PUM

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Abstract

The invention provides an artificial multiplication method of epinephelus polyphekadion. The artificial multiplication method includes the steps of 1), parent selection; 2), parent cultivation; 3), inspection and judgment of gonad development degree of parent fish; 4), artificial fertilization; 5), hatching of fertilized eggs. Through optimization design of various phases of the epinephelus polyphekadion from parent cultivation to fertilization and cultivation fish fries after hatching of the fertilized eggs, fertilization rate reaches more than 99.2%, the fertilized eggs can be hatched to thefish fries in 24-26 hours, and hatching rate can reach more than 99.5%.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to an artificial propagation method of cedar grouper. Background technique [0002] Epinephelus polyphekadion (scientific name: Epinephelus polyphekadion), also known as Qingshui grouper, is a species of grouper in the genus Grouper. The adult fish is brown all over, and the rear edge of the caudal fin is round. It is a rare fish at the bottom of warm water offshore. The meat is plump, tender, and nutritious, and is highly praised by people. Live fish is sold in Hong Kong and Macao markets, and is regarded as a first-class delicacy, and the supply exceeds demand. However, the cultivation of cedar spot is more difficult. Large-scale artificial breeding production has not yet been realized. [0003] The breeding of parents is an important reason affecting the development of artificial breeding of grouper. Insufficient nutrition makes it difficult for the broodstock to develop ra...

Claims

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Application Information

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IPC IPC(8): A01K61/10A23K50/80A23K10/20A23K10/22A23K10/30A23K10/37A23K20/174
CPCY02A40/81Y02P60/87
Inventor 蔡春有陈国华蔡有森蔡四川蔡建顺蔡惠明蔡金泉
Owner HAINAN CHENHAI AQUATIC CO LTD
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