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Method for breeding crucian

A technology for crucian carp and fry, which is applied to the breeding field of crucian carp, can solve the problems of low fertilization rate, species degeneration, weak physique and the like, and achieves the effects of high egg fertilization rate, increased survival rate and strong physique

Inactive Publication Date: 2018-09-28
启东家和食品有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the disadvantages are: broodstock cultivate natural eggs and sperm, the conditions are harsh, the spawning and fertilization are not easy to artificially control, and the fertilization rate is low
However, artificial injection of oxytocic gonadotropic precocious puberty rather than natural maturation, some eggs and sperm are congenitally deficient, the fertilization process has not undergone natural elimination, some are weak, and the genetic genes are passed on to the offspring. After artificial reproduction from generation to generation, the population has more bad genes , causing the species to degenerate
[0004] Therefore, in view of the advantages and disadvantages of artificial breeding and natural reproduction, natural reproduction is still preferred at present. Although the fertilization rate is low, it is a high-quality fertilized egg. Therefore, a natural reproduction method that can improve the fertilization rate is currently needed.

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with specific embodiment:

[0018] A breeding method for crucian carp, comprising the following steps:

[0019] Establish a natural breeding system: choose a square cement pond with rounded corners as the broodstock breeding pond, with an area of ​​700 square meters and a water depth of 1.8m. In the breeding pond, an automatic control system is used to control the water temperature of the breeding pond, and the intensity of light and water flow is cycled. seasonal changes;

[0020] In November, select 3,000 first-year-old fish with large individuals, good body shape, and no blemishes on the surface as broodstock and put them into the broodstock breeding pond for breeding and breeding. The ratio of male to female is 1:1.2, and it is controlled according to time. In December, the fish food is mainly pellet feed, plus 20%~30% fresh feed, of which the fresh feed is shrimp, meretrix meretrix, clam, and bai...

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Abstract

The invention discloses a method for breeding crucian. The method comprises the following steps of establishment of a breeding system; parent fish breeding and nutrient strengthening; arrangement of spawning nests; spawning and collection of fertilized eggs; hatching of the fertilized eggs; larva fish breeding; fry breeding. By means of the method for breeding the crucians, the fry develop well and are robust in physical constitution, ova or parent fishes cannot be damaged during spawning, the fertilization rate of the ova is high, and the survival rate of larva fishes is greatly increased.

Description

technical field [0001] The invention relates to the technical field of fish reproduction, in particular to a method for breeding crucian carp. Background technique [0002] Wild fish reproduce naturally. The male and female broodstock live together in the same water body. After the gonads mature, the female broodstock produces eggs, and the male broodstock produces sperm. The survival rate is high, the swimming is fast, and the probability of combining with the egg is high, and the sperm with poor constitution has a low probability of combining with the egg. The advantages of natural reproduction are: the broodstock naturally lays eggs and the sperm are well developed, and the sperm with good genes are passed on to offspring through natural elimination. However, the disadvantages are: broodstock cultivate natural spawning and sperm, the conditions are harsh, the spawning and fertilization are not easy to artificially control, and the fertilization rate is low. [0003] In ...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 刘群
Owner 启东家和食品有限公司
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