A kind of preparation method of bream and bream hybrid

A technology of trigonium bream and trigonium bream, which is applied in the field of hybrid preparation of trigonium bream and tricornis bream, can solve problems such as inapplicability, and achieve the effects of beautiful body shape, obvious growth advantages, and extensive feeding habits

Active Publication Date: 2018-05-11
ZHEJIANG INST OF FRESH WATER FISHERIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, CN101720698B discloses a method for distant hybridization of bream and bream, CN 102893938 A discloses a method for distant hybridization between bream and bream, and CN101884314B discloses a grass carp The method of distant hybridization with the subfamily of bream, but the above method of hybridization is not applicable to the hybridization between bream and triangular bream

Method used

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  • A kind of preparation method of bream and bream hybrid
  • A kind of preparation method of bream and bream hybrid
  • A kind of preparation method of bream and bream hybrid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. Hybridization stage

[0042] 1. Parent selection: Select excellent individuals that have been bred through multiple generations as hybrid parents. The age of the bream and triangular bream has reached 3 full years, the weight is more than 1.0kg, and they are healthy, disease-free and injury-free.

[0043] 2. Strengthen cultivation:

[0044] (1) Intensive cultivation of the parents of the scalloped cymbidium: the ratio of male to female in stocking is 1:1.5, and the stocking amount is 200kg / 667m 2 . The bait is mainly small-scale fresh bait fish without disease, supplemented by high-quality extruded pellet feed, and the daily bait amount is 2% of the total weight. Beginning in mid-April, flush with fresh water once a week, and stop flushing in late May.

[0045] (2) Intensive cultivation of triangular bream parents: stocking ratio of male to female is 1:1.2, stocking amount is 100kg / 667m 2 . In addition to feeding the feed, crushed snail clams were also added, an...

Embodiment 2

[0055] 1. Hybridization stage

[0056] 1. Parent selection: Select excellent individuals that have been bred through multiple generations as hybrid parents. The age of the bream and triangular bream has reached 4 full years, the weight is more than 1.0kg, and they are healthy, disease-free and injury-free.

[0057] 2. Strengthen cultivation:

[0058] (1) Intensive cultivation of the parents of the scalloped cymbidium: the ratio of male to female in stocking is 1:1.8, and the stocking amount is 250kg / 667m 2 . The bait is mainly small-scale fresh bait fish without disease, supplemented by high-quality extruded pellet feed, and the daily bait amount is 3% of the total weight. Beginning in mid-April, pour new water twice a week, and stop flushing in late May.

[0059] (2) Intensive cultivation of triangular bream parents: stocking ratio of male to female is 1:1.3, stocking amount is 130kg / 667m 2 . In addition to feeding the feed, crushed snail clams were also added, and the d...

Embodiment 3

[0069] 1. Hybridization stage

[0070] 1. Parent selection: select excellent individuals of triangular bream through continuous multi-generation breeding and excellent individuals of bream induced by continuous gynogenesis as the hybrid parents. The age of bream and triangular bream reaches 4 full years, and the weight is more than 1.0kg. , and physically strong, disease-free and injury-free.

[0071] 2. Strengthen cultivation:

[0072] (1) Intensive cultivation of the parents of the scalloped cymbidium: the ratio of male to female in stocking is 1:1.8, and the stocking amount is 250kg / 667m 2 . The bait is mainly small-scale fresh bait fish without disease, supplemented by high-quality extruded pellet feed, and the daily bait amount is 3% of the total weight. Beginning in mid-April, pour new water twice a week, and stop flushing in late May.

[0073](2) Intensive cultivation of triangular bream parents: stocking ratio of male to female is 1:1.3, stocking amount is 130kg / 66...

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Abstract

The invention provides a method for preparing hybrids of bream and triangular bream. The method includes parent selection, intensive cultivation, artificial induction of labor, artificial insemination, hatching and cultivation of seedlings, and other technical links. The invention has strong operability. The obtained hybrid has a beautiful body and obvious growth advantages, and has a mild temperament, does not like jumping, has strong stress resistance, is easy to catch, and has a high survival rate for long-distance transportation of fish species and adults; The degree of tenderness is better than that of triangular bream, and the content of umami amino acids is higher; it has a wider range of feeding habits, better resistance to hypoxia and stress; the hybrid is sexually fertile, providing a source for further tapping the breeding potential of hybrid offspring It is possible to breed new breeds with excellent traits and stable genetics.

Description

technical field [0001] The invention belongs to the technical field of fish hybrid breeding, in particular to a method for preparing hybrids of bream and bream. Background technique [0002] Hybrid breeding is an effective method to rapidly improve breeding traits. According to statistics, there have been at least one thousand species of fish hybridization experiments, but only a few species of hybrid progenies have shown obvious hybrid vigor, and have been popularized and applied in actual production (such as Nile tilapia × Oni tilapia, spotted snakehead × black snakehead, etc.). Considering the number of chromosomes and nucleoplasmic affinity and other issues, some experts predict that pairwise hybridization can be carried out between most species of the subfamily of Cichlidae. The bream and the triangular bream are important economic fish belonging to the genus bream and the genus bream respectively in the subfamily of bream. The former is a pelagic fish with a slender ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 顾志敏蒋文枰贾永义郭建林刘士力
Owner ZHEJIANG INST OF FRESH WATER FISHERIES
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