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Litopenaeus vannamei backcross selecting and breeding method

A technology for Penaeus vannamei, which is applied in the field of backcross breeding and breeding of Penaeus vannamei, can solve problems such as the decline of self-propagating populations, and achieve the effects of reducing the incidence rate, relieving the heavy dependence on imports, and accelerating the progress of breeding.

Active Publication Date: 2019-01-29
渤海水产育种(海南)有限公司
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  • Application Information

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Problems solved by technology

At present, there are many introduced populations of Litopenaeus vannamei from different sources in my country, and these different populations all show unique and good traits, but under the unique breeding mode of our country, the trait decline of self-propagating populations is also very serious

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  • Litopenaeus vannamei backcross selecting and breeding method

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Embodiment Construction

[0017] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0018] (1) Establishment of breeding base group

[0019] Using the introduced population with excellent growth characteristics entering the Chinese market as the original basic group, the original basic group was raised under the high-level pond culture mode, and shrimps that met the standard of 15g / tail after 90 days of cultivation were selected to enter the candidate group. Randomly select no less than 60 shrimps in the population to be selected as samples, measure the body weight and calculate the standard deviation of the body weight, take the average of the standard deviation of three parallel samples, if it is not higher than 0.2, it is considered to meet the standard.

[0020] Introduce the selected groups that meet the standards, the size of the introduction should not be less than 1 million, and separate them into several pools f...

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Abstract

The invention relates to a litopenaeus vannamei backcross selecting and breeding method. An original group with an excellent growth character is used as a breeding base group, an inbred line is established through continuous 3-7 generations of full-sibs homogeneous apolegamy, and the inbred line is used as a non-recurrent parent; and individuals with good stress resistance in the original group are used as recurrent parents, then backcrossing improvement is carried out for 3-7 generations and inbred stabilization is carried out for 1-3 generations, so that a young pawn manufacturing system forproduction is formed. The strain has the characteristics of high growth speed, uniform individuals and high group yield, and is suitable for existing high-place pond and industrial breeding mode forprawns in China.

Description

technical field [0001] The invention relates to the field of genetic breeding of aquatic animals, in particular to a method for backcross selection and breeding of Litopenaeus vannamei. Background technique [0002] Litopenaeus vannamei, also known as white Pacific shrimp, is produced in Central and South America. The wild population is distributed in the Pacific coast waters from Mexico to Chile. The natural water temperature in this area is above 20 degrees all year round. my country's Litopenaeus vannamei was first introduced from Hawaii, USA in 1988 by Zhang Weiquan, a researcher at the Institute of Oceanology, Chinese Academy of Sciences. Promote gradually. After 1999, the cultivation of Litopenaeus vannamei was carried out on a large scale across the country. The output of Litopenaeus vannamei in my country showed explosive growth after 2000, and it became the country with the highest production of Litopenaeus vannamei in the world. In recent years, my country The annu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 黄皓
Owner 渤海水产育种(海南)有限公司