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GB/T 40188-2021Technical code of breeding practice with molecular marker assisted selection for livestock and poultry (English PDF)

畜禽分子标记辅助育种技术规程

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 21, 2021

Implementation date

December 1, 2021

Scope

GB/T 40188-2021 is the English-translated version of 畜禽分子标记辅助育种技术规程.

GB/T 40188-2021 is the Chinese code of practice for breeding livestock and poultry with molecular marker assisted selection (MAS), in which DNA markers closely linked to a target trait are used to select for that trait indirectly.

It gives the basic and operational requirements for such breeding programmes and defines the key terms: MAS, marker-assisted best linear unbiased prediction (MA-BLUP), the net molecular score and the selection index.

Performance data are taken with the NY/T measurement procedures for breeding pigs, pig muscle quality and carcass traits, broilers, layers, sheep and goats, Chinese Holstein and beef cattle, plus the microsatellite DNA diversity procedure.

It applies to pigs, cattle, goats, sheep and chickens and can be used as a reference for other animals. It was issued on 21 May 2021 and has applied since 1 December 2021.

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Document preview — GB/T 40188-2021

National Standard of the People's Republic of China

ICS: 65.020.30
Classification: B 43

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard was proposed and managed by the China National Institute of Standardization.

1 Scope

This standard specifies the basic and operational requirements for molecular marker-assisted breeding of livestock and poultry.

This standard applies to molecular marker-assisted breeding of pigs, cattle, goats, sheep and chickens, and other animal breeding can be used as a reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

NY/T 821 Technical Specification for Pig Muscle Quality Determination

NY/T 822 Breeding Pig Production Performance Determination Procedure

NY/T 825 Lean type pig carcass traits determination technical specifications

NY/T 828 Technical Specification for Broiler Performance Measurement

NY/T 1236 Technical specification for performance measurement of cotton and goat

NY/T 1450 Technical Specification for Production Performance Measurement of Chinese Holstein Cattle

NY/T 1673 Technical Regulations for Detection of Genetic Diversity of Livestock and Poultry Microsatellite DNA

NY/T 2123 Technical Specification for Performance Measurement of Layers

NY/T 2660 Beef Cattle Production Performance Determination Technical Specification

Detection of genetically modified animals and their products, DNA extraction and purification (Announcement No. 2406-7-2016 of the Ministry of Agriculture)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Marker assisted selection; MAS

A breeding technique that uses DNA molecular markers closely linked to the target traits to indirectly select the target traits.

3.2 Marker-assisted best linear unbiased prediction; MA-BLUP

A mixed linear model method suitable for livestock and poultry MAS. The mixed linear model divides the value of each sports species into foreground molecular markers Effect and background minor polygene effect are two parts, and the molecular marker effect and minor polygene effect are solved simultaneously through the mixed model equations (MME) Effect, the estimated breeding value of individual livestock and poultry is the sum of molecular marker effect and minor polygenic effect.

3.3 Net molecular score

In the selection index of livestock and poultry MAS, the part composed of molecular marker effect value is essentially all quantitative related to molecular markers The sum of additive effects of quantitative trait locus (QTL).

3.4 Selection index

A method of livestock and poultry MAS is a weighted combination of two parts, the net molecular value and the deviation of the individual phenotype value.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB 47500-2026|GB 47738-2026|GB/T 14926.1-2026|GB/T 14926.19-2026|GB/T 14926.20-2026|GB/T 14926.22-2026

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