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Method for breeding two hybrid species of fish

A breeding method and a technology of hybrid species, applied in the field of breeding of two fish hybrid species, can solve problems such as large-scale production that have not yet been seen, and achieve good economic and social benefits, thick meat, and high food conversion rate

Inactive Publication Date: 2008-11-12
HUANXIN FIELD OF AQUATIC PROD & FINE BREED TIANJIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there have been no reports of large-scale production

Method used

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  • Method for breeding two hybrid species of fish

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The production methods of Lutai large whitefish include:

[0038] 1. Seed production

[0039] The hybrid species of Lutai large white fish was obtained by using distant hybridization between genus, with bream as the female parent and red bream as the male parent.

[0040] 2. Seed production

[0041] (1) Adopt artificial aphrodisiac method. Inject oxytocin drugs to broodstock in order to obtain eggs and sperm that develop into heat. The oxytocin drugs are luteinizing hormone-releasing hormone analog (LRH-A) and chorionic gonadotropin (HCG), and the injection dose is per kg body weight of female fish LRH-A 20-25 μg and HCG 300-500 IU. Half the dose for female fish was used for male fish. Female fish were injected with oxytocin drugs twice, with an interval of 12 hours. The first injection dose was 1 / 3 of the full dose, and the second injection was the rest; the male fish was injected once, and the female fish was injected at the second injection. The injection site i...

Embodiment 2

[0051] The production process of golden crucian carp culture includes:

[0052] 1. Seed production

[0053] The golden crucian carp hybrid was obtained by using frame scale mirror carp as the female parent and red crucian carp as the male parent.

[0054] 2. Seed production

[0055] With embodiment 1.

[0056] 3. Breeding

[0057] Gold crucian carp commercial fish breeding technology, there are two modes:

[0058] (1) The technology of raising 150g commercial fish in the same year: the pond is about 10 acres, the water depth is 1-1.5m, and 20,000 black crows or 12,500 summer flowers are released per mu, with 500-1000 silver carp black cubs or summer flowers, and the powder is fed. The daily feeding amount is 5-7% of the total weight of pond fish; when the average tail weight reaches 10-30g, switch to special fish feed (particle size 1.5mm), and the daily feeding amount is 5-7% of the total weight of pond fish. 4-6% of the body weight; when the average weight of the tail r...

Embodiment 3

[0061] The main form and biological characteristics of the large white fish and golden crucian carp obtained in embodiment 1 and embodiment 2 are as follows:

[0062] (1) Main morphological features

[0063] Table 1 Morphological characteristics of Lutai large whitefish and golden crucian carp

[0064]

project

Lutai Big White Fish

(body length 19.49-25.94cm)

Golden crucian carp

(body length 18.77-22.61cm)

Body Length / Height

2.93±0.14

2.13±0.14

Body length / body thickness

8.22±0.56

4.25±0.27

body length / head length

4.37±0.14

3.31±0.19

head length / kiss length

3.95±0.28

2.85±0.21

head length / eye diameter

4.26±0.31

6.42±0.52

Head length / eye distance

3.26±0.13

2.32±0.10

Tail handle length / Tail handle height

0.75±0.10

0.89±0.35

Number of dorsal fin rays

i，7

iii(iv), 16~20

Number of pect...

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Abstract

A method for culturing two hybrid varieties of fish includes such steps as providing wuchangfish (or red-scale carp) as female parent and topmouth culter (or red crucian carp) as male parent, injecting oxytocic, taking the mature ova, artificial insemination, incubation, culturing black fry by feeding soybean milk for 10-14 days, and culturing for 4-6 months. Its advantages are unique shape, high growth speed, and high resistance to stress.

Description

technical field [0001] The invention belongs to the technical field of fish farming, in particular to a method for cultivating two hybrid fish species. Background technique [0002] At present, fish distant hybridization is one of the basic means of fish breeding. Because distant hybridization can solve the problem of hybridization between closely related species, the variation range is small, thereby expanding and enriching the gene pool of animal and plant breeding, promoting the exchange of gene pools between species, introducing heterogeneous genes, and creating unprecedented and new domestic varieties. Mutate types and even form new species. However, there are technical difficulties in large-scale production and application of distant hybridization, so there are very few distant hybrids used in large-scale production. So far, there are no reports of large-scale production. Contents of the invention [0003] In order to solve the problems in the prior art, the inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02A01K61/00A61D19/00
CPCY02A40/81
Inventor 金万昆
Owner HUANXIN FIELD OF AQUATIC PROD & FINE BREED TIANJIN