Method of artificially inducing spawning in loach culture

A technology of artificial induction and loach, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of prolonging the breeding cycle, fertilized egg adhesion, reducing the hatching rate of fertilized eggs, etc., to reduce casualties, good growth and development, shortening The effect of hatching time

Active Publication Date: 2021-09-07
佛山市嘉沃农业科技合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, without artificial intervention before the loach is born, the gonads of the loach grow and mature naturally, which prolongs the breeding cycle. At the same time, the debonding operation is not performed on the fertilized eggs before they hatch, which may easily cause the fertilized eggs to stick and reduce the hatching rate of the fertilized eggs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The artificial induced spawning method of loach breeding includes the pre-maturity promoting process of parental loach, the artificial induced spawning process, and the fertilized egg hatching process; the fertilized egg hatching process is to intervene in an extreme environment before cultivating and hatching the fertilized eggs. This method of oxytocin takes advantage of the high sensitivity of fertilized eggs to the living environment. When the cells are stimulated by the external environment, they can quickly synthesize protective substances with self-repairing properties to resist these adverse conditions, so that the fertilized eggs can accelerate their initiation. During the period, a higher film production rate, embryo survival rate and hatching rate are obtained, and production costs are saved to meet the large demand for loach seedlings in artificial breeding.

[0034] The extreme environment is an extreme temperature environment, and the specific conditions ar...

Embodiment 2

[0051] Loach culture artificial induced spawning method specifically comprises the following steps:

[0052]1) Prepare a cultivation pond with an overflow device at the bottom, then inject water into the pond and disinfect it for 3 hours, then inject water again, and keep the water temperature in the pond constant at 25°C. The above cultivation pond is disinfected by splashing the whole pond with a mixture of copper sulfate and ferrous sulfate , the dosage of copper sulfate is 1.2g / m 3 , the proportion of copper sulfate and ferrous sulfate is 4.5:2.5, and the above-mentioned overflow device is set as follows: at the bottom of the cultivation pool, the diameter of the upper hole is first laid at the bottom of the pond, and the diameter of the upper hole is 150 meshes, and then the diameter of the mesh is 20 meshes. The edges of both the dense net and the thin net will extend to the edge of the cultivation pool;

[0053] 2) Select a parent loach with a body length of 17cm, a bo...

Embodiment 3

[0060] The method of artificially induced spawning in loach breeding, optimizes the debonding treatment steps, and the specific measures are as follows: When the yield of loach reaches 85%, pull up the thin net in the hatching tank, so that the fertilized eggs of loach can leak to the dense net below in time , then place 4 times the weight of fertilized eggs in the debonding suspension and stir until all the fertilized eggs are in the form of dispersed particles. Suspension prepared by mixing the acid with a weight ratio of 1:0.08:0.04. Since loach eggs are sticky eggs and sinking eggs, after natural mating, the fertilized eggs are easily bonded together. Add to the debonding agent After dextrorotary 4-methyl-2-pentanol and abscisic acid, highly active α and β unsaturated ketone structures and dextro-isomers work together to combine with hydrogen atoms of amino acids in proteins on the fertilized egg cell membrane, thereby generating stimulation It can inhibit the secretion of...

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PUM

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Abstract

The invention provides a method for artificially inducing labor for loach cultivation, which belongs to the field of artificially inducing labor, and includes a process for promoting maturation in the early stage of sexual maturity of loach, an artificially induced process, and a fertilized egg hatching process; the fertilized egg hatching process is carried out by placing fertilized eggs at extreme temperatures or After intervening in an extremely acidified environment, the cultivation and hatching is carried out; in the above-mentioned pre-maturation process of eel-loving loach, the traditional Chinese medicine extract dispersed in the matrix is ​​used as the gonadotropic maturation agent. It can be obtained by magnetic leaching in the presence of ethyl acetate magnetized medium. The artificial induced spawning method for loach breeding provided by the invention has high efficiency, short spawning and hatching period, high biological activity of fertilized eggs, low adhesiveness, no contamination by external germs, high yield and survival rate of loach seedlings, and high uniformity; The gonad maturation agent can reduce loach excretion, reduce water pollution, increase the number of eggs laid, improve the quality of fertilized eggs, and reduce the number of casualties after spawning of parent loaches.

Description

technical field [0001] The invention belongs to the field of artificial induced labor, and in particular relates to an artificial induced labor method for loach breeding. Background technique [0002] Loach belongs to Cyprinidae, Loachidae, Loach subfamily, Loach genus. It is a fish with wide distribution and high economic value. Loach has high nutritional and medicinal value, high protein and low fat, fresh and tender meat, rich nutrition, delicious taste, rich in various vitamins and minerals, and has high nutritional and medicinal value. Loach is a high-protein, low-fat aquatic product. Its meat is tender and nutritious. It is not only a delicacy, but also has high therapeutic value. It is known as "water ginseng" and is a traditional export fish species in my country. Loach has strong adaptability, few diseases, high survival rate, strong fecundity, convenient transportation, easy breeding bait, and low breeding cost. It has become an important freshwater economic fish...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/17
CPCY02A40/81
Inventor 陈本林郑辉
Owner 佛山市嘉沃农业科技合伙企业(有限合伙)
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