Method for culturing full-male cross pelteobagrus fulvidraco

A cultivation method and technology for yellow catfish, applied in the field of aquatic animal genetics and breeding, can solve problems such as unstable seed quality and specification differentiation, and achieve the effects of reducing the risk of damage, stable seed quality, and good economic benefits.

Inactive Publication Date: 2017-08-29
FOSHAN NANHAI BAIRONG AQUATIC SEED +2
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, hybrid yellow catfish faces the problems of size differentiation and unstable seed quality. Therefore, it is a realistic demand of the industry to carry out the breeding and development of all-male strains of hybrid yellow catfish and to further improve the selection of hybrid breeding combinations.

Method used

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  • Method for culturing full-male cross pelteobagrus fulvidraco
  • Method for culturing full-male cross pelteobagrus fulvidraco
  • Method for culturing full-male cross pelteobagrus fulvidraco

Examples

Experimental program
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Effect test

Embodiment 1

[0053] 1. Induction of Pseudo-female Population of Pelvis valscheri in the Pearl River System

[0054] During the breeding season, the parents of normal-sexed pelagic catfish were artificially induced to induce labor. The dose of induced labor was the first injection of LHRH-A2 3μg / Kg for the female parent, and the second injection of LHRH-A2 10μg / Kg+DOM 5mg / Kg+HCG 1300IU / 12 hours later. Kg, the male fish is injected with oxytocic agent when the female fish is given the second injection, the dose is 1 / 3-1 / 2 of the female fish; when the water temperature is 25°C-30°C, the effect time is generally 10 hours-16 hours. The fry were fed Artemia in the first few days after hatching, and started feeding bait with 30ppm estradiol or diethylstilbestrol on the 7th day after hatching. After 30-45 days of continuous feeding, the hormone feeding was stopped, and they were transferred to a special pond for normal feeding. Breeding, when the fry grow to 10cm-15cm, carry out gonad staining an...

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Abstract

The invention relates to the field of genetic breeding science of aquatic livestock and particularly relates to a method for culturing full-male cross pelteobagrus fulvidraco. The method comprises the steps: carrying out feminization induction on ordinary pelteobagrus vachelli offspring, and carrying out gynogenesis induction by using pseudo-female property; carrying out feminization induction on one part of gynogenesis individuals so as to obtain gynogenesis-population feminized pelteobagrus vachelli individuals; carrying out normal culture on the other part of the gynogenesis individuals so as to obtain male pelteobagrus vachelli; carrying out test cross so as to obtain male pelteobagrus vachelli and female pelteobagrus vachelli with the genotype of YY; carrying out propagation mating on the female pelteobagrus vachelli with the genotype of YY and male pelteobagrus vachelli so as to obtain YY super-male pelteobagrus vachelli; and carrying out cross breeding on the YY super-male pelteobagrus vachelli and female pelteobagrus fulvidraco with the genotype of XX, thereby obtaining the full-male cross pelteobagrus fulvidraco. According to the method, optimal cross-combined full-male offspring are obtained, so that dual effects of cross breeding and unisexual breeding are synchronously obtained, and meanwhile, the risk of potential destruction to natural germ-plasm resources caused by cross breeding is reduced.

Description

technical field [0001] The invention relates to the field of aquatic animal genetics and breeding, in particular to a method for cultivating all-male hybrid yellow catfish. Background technique [0002] In aquaculture, there are differences in economic traits between male and female individuals of many cultured species, such as growth rate, individual size, and edible (medicinal) part size. Therefore, the production of single-sex seedlings for breeding can significantly improve economic benefits by controlling sex. For example, yellow catfish or black snakehead, male fish grow faster than female fish, and the final individual is larger. Therefore, selecting all-male or male-majority fry during the breeding process can significantly increase the breeding efficiency. [0003] Crossbreeding is a common breeding method in fish breeding. By screening suitable hybrid parental combinations, hybrid vigor is used to breed hybrid progenies with both parental advantages and traits equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 韩林强古勇明李桂阳艾丽杨强
Owner FOSHAN NANHAI BAIRONG AQUATIC SEED
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