Little yellow croaker female fish and large yellow croaker male fish crossbreeding method

A technology of hybrid breeding and small yellow croaker, which is applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of lower economic benefits, lower quality of breeding groups, scarce wild resources of large yellow croaker, etc., and achieve fast growth and good quality. Effect

Inactive Publication Date: 2016-12-07
MARINE FISHERIES RES INST OF ZHEJIANG
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AI Technical Summary

Problems solved by technology

However, due to overfishing, environmental changes and other reasons, small yellow croakers are precocious and increasingly miniaturized; the wild resources of larg

Method used

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Experimental program
Comparison scheme
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Embodiment

[0026] Embodiment: a kind of method for hybrid breeding of small yellow croaker female fish and large yellow croaker male fish, it may further comprise the steps:

[0027] a Parent selection and breeding

[0028] In the winter before the hybridization, select a small yellow croaker with a total length of more than 20cm and a body weight of more than 50g at the age of about 9 months as the female parent of the hybrid. Large yellow croakers weighing more than 300g, normal in shape, body color, and healthy without injury are used as hybrid male parents, and they are placed in different cement ponds for intensive cultivation. : Vitamin C1-3‰, vitamin E0.2-0.5‰, multivitamin 1‰, DHA1.5%, lecithin 1.5% and the balance of fresh clamworm. Feed twice a day, and the daily feeding amount is 1.5% of the body weight of the fish; during the broodstock breeding period, the broodstock pond is continuously aerated and cultivated with flowing water, and the water exchange rate is 300%, and the...

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Abstract

The invention provides a little yellow croaker female fish and large yellow croaker male fish crossbreeding method, and belongs to the technical field of aquaculture seawater fish larval breeding. The method comprises the following steps of 1, parent selection and culture; 2, artificial hasten parturition and insemination: a, artificial hasten parturition; b, artificial egg extrusion and semen collection; c, artificial dry process and insemination; d, egg washing; 3, larval breeding management; 4, larva and young fish culture. The method has the advantages that the little yellow croaker and large yellow croaker crossbreeding is performed; new varieties with high growth speed and excellent quality can be cultured; in addition, the fertility rate of the new varieties can reach 65 percent or higher; the hatching rate reaches 92 percent or higher; important application values are realized on the production; the health development of the aquaculture industry in China is promoted.

Description

technical field [0001] The invention belongs to the technical field of seed breeding of seawater fish in aquaculture, and in particular relates to a hybrid breeding method for female small yellow croaker and male large yellow croaker. Background technique [0002] Both small yellow croaker and large yellow croaker belong to the four major marine products. Their meat is tender and delicious, and are favored by consumers. However, due to overfishing, environmental changes and other reasons, small yellow croakers are precocious and miniaturized. The wild resources of large yellow croakers are extremely scarce, and the quality of their breeding populations has seriously declined, and the economic benefits have decreased significantly. Hybridization can transfer the genetic material of organisms from one population to another, and is an important method to increase the variability of organisms. The recombination of variable traits can be obtained by crossing different types of p...

Claims

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Application Information

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IPC IPC(8): A01K61/00A23K50/80A23K20/174A23K20/158A23K10/20
CPCA01K61/00Y02A40/81Y02A40/818
Inventor 刘峰楼宝陈睿毅詹炜徐冬冬徐麒翔马涛
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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