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Method for breeding and culturing hybridized snakehead fish

A breeding method and technology for hybrid snakehead, which are applied in the field of breeding and aquaculture of hybrid snakehead, can solve problems such as disease, intolerance to long-distance transportation, slow growth rate of snakehead, and achieve strong resistance to stress, are suitable for large-scale promotion, and solve growth problems. slow effect

Active Publication Date: 2012-11-07
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology does not involve a technical solution for breeding good seedlings of the Channaidae, and cannot fundamentally solve the shortcomings of the germplasm degradation of the Channaidae such as slow growth, serious diseases, and intolerance to long-distance transportation.
[0005] How to optimize the species of snakehead fish through better breeding and breeding methods, there is no relevant technical report at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] During the breeding season, when the water temperature reaches above 22°C, select broodstock for induced spawning among the farmed snakeheads and spotted snakeheads. Concave; the female parent is Channa japonica over 1 year old, weighing more than 500g, with slightly red, swollen and protruding anus and genital openings, enlarged abdomen, and obvious ovary outline when the head is erected upward.

[0025] After the brood fish are selected, the male snakehead is placed in a cement pond for temporary storage, and the female snakehead is given the first injection of oxytocin drugs: injection dose per kilogram of fish weight: chorionic gonadotropin (HCG) 500IU, luteinizing hormone release Hormone A 2 (LRH-A 2 ) 6 μg; 12 hours later, the female Channa nama was injected with the second injection, and the injection dose was per kilogram of fish body weight: HCG 1000IU, LRH-A 2 20μg, dioconone maleate (DOM) 25mg; the male snakehead has a single injection of oxytocin drugs, a...

Embodiment 2

[0031] During the breeding season, when the water temperature reaches 24°C, select broodstock for induced breeding from the farmed snakehead and spotted snakehead. The selection criteria: the male parent is a snakehead above 2 years old, weighing more than 750g, and the anus and genital pores are slightly pink and slightly concave. The female parent is a channa gnat over 1 year old, weighing more than 500g, with slightly red, swollen and protruding anus and genital openings, enlarged abdomen, and obvious ovary outline when the head is erected upward.

[0032] After the brood fish are selected, the male snakehead is placed in a cement pond for temporary maintenance, and the female snakehead is given the first injection of oxytocin drugs: the injection dose is based on the weight of the fish per kilogram: human chorionic gonadotropin (HCG) 1000IU, luteinizing hormone release Hormone A 2 (LRH-A 2 ) 5 μg; 12 hours later, the female Channa nama was injected with the second injecti...

Embodiment 3

[0038] During the breeding season, when the water temperature reaches 25°C, select broodstock for induced breeding from the farmed snakehead and spotted snakehead. The selection criteria: the male parent is a snakehead above 2 years old, weighing more than 750g, and the anus and genital pores are slightly pink and slightly concave. The female parent is a channa gnat over 1 year old, weighing more than 500g, with slightly red, swollen and protruding anus and genital openings, enlarged abdomen, and obvious ovary outline when the head is erected upward.

[0039] After the brood fish are selected, the male snakehead will be placed in a cement pond for temporary storage, and the female snakehead will be given the first injection of oxytocin drugs: injection dose per kilogram of fish weight: Chorionic gonadotropin (HCG) 100IU, luteinizing hormone release Hormone A 2 (LRH-A 2 ) 10 μg; 12 hours later, the female Channa nama was injected with the second injection, and the injection do...

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Abstract

The present invention discloses a method for breeding and culturing hybridized snakehead fish, including steps of ripe fish selection, hormone injection, ripe fish pairing, fish-egg collection, fish-egg incubation and fish fry temporary culture. A snake-head is selected as a ripe fish male parent and a snakehead mullet is selected as a female parent, an precise hormone compatibility and an injection method are determined to inject hormone to the male parent and the female parent ripe fishes for an induced spawning, then breeding by single pairing one to one, collecting and incubating a fertilized ovum, then a fish fry may be transported and sell after culturing temporarily. By means of the method of the invention, a rate of hybridized snakehead fish emergence is high, a growth rate is rapid, a converse resistance is strong, and the fish fry is able to bear a transportation, the method of the invention has an important significance for a popularization and culture of the snakehead fishes.

Description

technical field [0001] The invention relates to freshwater fish hybrid breeding technology, in particular to a hybrid snakehead breeding and cultivation method. Background technique [0002] There are 33 species of snakeheads in the world, and there are 11 species distributed in China: black snakehead, spotted snakehead, moon snakehead, striped snakehead, edge snakehead, spot snakehead, carapace snakehead, eye snakehead, night snakehead, line snakehead, wide-fronted snakehead . Among the 11 species of snakeheads, black snakeheads and spotted snakeheads are the most artificially bred. The meat of the black snakehead and the spotted snakehead is delicate, delicious, with less thorns and more meat, rich in nutrition. Favored by domestic and foreign consumers. [0003] However, due to many years of breeding, both the snakehead and the spotted snakehead species have the disadvantages of slow growth, serious diseases, and intolerant long-distance transportation, which restricts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 邹记兴卓孝磊陈言峰林永贺
Owner SOUTH CHINA AGRI UNIV
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