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Livestock open nucleus building method

A construction method and core group technology, applied to the field of open core group construction of livestock, can solve the problem of maximizing the selection response that cannot achieve genetic improvement, and achieve the effect of promoting regional joint breeding, rapid genetic progress and maximization.

Inactive Publication Date: 2016-07-20
SUN YAT SEN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The reason is that the closed selection of the traditional core group is affected by many factors such as the size of the core group, sex ratio, management mode, etc., and cannot maximize the selection response of genetic improvement.

Method used

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  • Livestock open nucleus building method

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Embodiment 1

[0021] To construct an open nucleus, we must first fully understand the population’s source, genetic structure, sex ratio, age structure, etc., and accumulate certain genealogical information and performance measurement information, and comprehensively analyze the population’s reproductive performance and growth performance and other important economic genetic variation. The comprehensive index ranking uses the top 20% purebred sows and the top 5% purebred boars in the comprehensive index as the selection criteria.

[0022] The core group is built to analyze the important economic genetic variation of the population in reproductive performance and growth performance. There are currently paternal index and maternal index for genetic evaluation of breeding pigs. The former is used for the selection of patrilineal breeds such as Duroc, and the latter is used for Landrace and Dabai. Selection of other maternal breeds. The sire line focuses on the selection of growth performance such ...

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Abstract

The invention belongs to the technical field of livestock thremmatology, and particularly discloses a livestock open nucleus building method.An open nucleus method is integrally built by synthesizing nucleus breed swine sources, population structure, sex ratio, generation interval control, active and passive elimination, breed swine classified management, heritable variation monitoring and the like, a standard digital swine breeding and production management system is built, and the breed swine genetic improvement value is maximized.

Description

Technical field [0001] The invention relates to the technical field of livestock breeding, in particular to a method for constructing an open nucleus group of livestock. Background technique [0002] In the field of livestock breeding, the closed nucleus breeding method is usually adopted. The implementation steps of this technology are variety identification, variety introduction, closed breeding and improvement. Although the traditional closed nucleus selection method can achieve a certain degree of genetic progress, it is easy to fall into the "introduction-degeneration-re-introduction-re-degeneration" cycle. The reason is that traditional closed breeding of nucleus group is affected by many factors such as the size of the nucleus group, gender ratio, management mode, etc., and the selection response of genetic improvement cannot be maximized. Summary of the invention [0003] In order to overcome the above shortcomings of the prior art, the present invention provides a method...

Claims

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Application Information

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IPC IPC(8): A01K67/02
CPCA01K67/02
Inventor 陈瑶生刘小红陈清森赵云翔黄翔
Owner SUN YAT SEN UNIV
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