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Method of establishing bred prawn pedigree and selectively breeding improved prawn variety

An improved breed selection and breeding method and family technology, applied in the direction of animal husbandry, etc., can solve the problems of not being able to fully adapt to the breeding environment and breeding conditions, and failing to design the breeding of shrimp families.

Inactive Publication Date: 2004-09-08
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The breeding of prawns has been carried out continuously in the past 20 years, and the super blue prawns with strong stress resistance, specific pathogen-free (SPF) and specific pathogen-resistant (SPR) vannamei (Penaeus vannamei) have been selected successively. It cannot fully adapt to the breeding environment and breeding conditions of our country, and there is no patent report on the selection and breeding of perfectly designed prawn families at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Among the 5,000 pairs of broodstock, 500 pairs of broodstock with strong vitality, normal physical characteristics, and a body weight greater than 15-20% of the average body weight were selected as alternative broodstock, and each mated female shrimp was reared in a In the spawning pool, individuals with large egg production and high hatching rate are selected from the spawning period as alternative families. From spawning to seedling cultivation and cultivation, the offspring of each prawn are raised separately, and 150 families are selected. During the breeding period, some families may be eliminated due to disease or other reasons. Among the remaining families, only 50 families with fast growth, high survival rate and relatively uniform size are selected as the basic families for the next generation.

[0015] 2) Using the artificial insemination technique of prawns, according to the principle of mating one male shrimp with three female shrimps, one selected male sh...

Embodiment 2

[0022] 1) Among the 8,000 pairs of parent shrimps, 800 pairs of parent shrimps with strong vitality, normal physical characteristics, and a body weight greater than 15% to 20% of the average body weight were selected as alternative parent shrimps (the selection intensity was 10%). The female shrimps were cultured in a spawning pond respectively, and individuals with large egg production and high hatching rate were selected from the spawning period as the candidate family. From spawning to seedling cultivation and cultivation, the offspring of each shrimp were reared separately. 150 families were established. During the breeding period, some families may be eliminated due to disease or other reasons. Among the remaining families, only 50 families with fast growth, high survival rate and relatively uniform size were selected as the basic families for the next generation selection.

[0023] 2) Using the artificial insemination technique of prawns, according to the principle of mat...

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Abstract

The method of establishing bred prawn pedigree and selectively breeding improved prawn variety includes selecting 10-20 % parent prawn with strong activity, normal physical sign and weight 15-20 % over the average weight; separated breeding of mated female prawn in separate spawning pond, selecting individuals with high hatchability, continuous selection in breeding, establishing basic pedigree; and optimizing in three key growth periods of prawn including nauplius larva period, commercial prawn period and pre-maturation period. The said method of the present invention may be used in selectively breeding new prawn variety with high quality and high yield. The present invention makes it possible to research the genetic characteristic and variety differentiation of prawn via the mating between male and female prawns in the same pedigree and different pedigrees.

Description

technical field [0001] The invention relates to the selection and breeding of fine varieties of cultured prawns, in particular to a method for establishing a family of cultured prawns and breeding of fine varieties Background technique [0002] Variety degeneration is one of the key issues affecting the sustainable and stable development of prawn farming. Breeding new prawn species with strong disease resistance or stress resistance can also reduce the impact of diseases and environmental deterioration on prawn farming. At present, the breeding of prawns in my country is only in its infancy. The breeding of foreign prawns is mainly based on biological characteristics such as no specific pathogens or resistance to specific pathogens and rapid growth. Shrimp strains, and the selected strains have strong regional characteristics, generally cannot adapt to the breeding environment in other regions or the species degrades very quickly. [0003] As an important means of improving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033
Inventor 相建海吴长功刘小林周岭华
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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