GB/T 22284-2025_English: PDF (GB/T22284-2025)
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| GB/T 22284-2025 | 199 |
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Large white breeding pig
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| GB 22284-2008 | 159 |
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[GB/T 22284-2008] Large Yorkshire breeding pigs
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| Standard ID | GB/T 22284-2025 (GB/T22284-2025) | | Description (Translated English) | Large white breeding pig | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B43 | | Classification of International Standard | 65.020.30 | | Word Count Estimation | 10,125 | | Date of Issue | 2025-02-28 | | Date of Implementation | 2025-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 22284-2025.Large White Breeding Pigs
GB/T 22284-2025 English version. Large white breeding pig
ICS 65.020.30
CCSB43
National Standard of the People's Republic of China
Replaces GB/T 22284-2008
Large white pig breeder
Released on 2025-02-28
2025-09-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 22284-2008 "Great Yorkshire Pig Breeders". Compared with GB/T 22284-2008, except for the structural adjustment and compilation
In addition to logical changes, the main technical changes are as follows.
a) The terms and definitions in “Terms and Definitions” have been deleted (see Chapter 3, Chapter 3 of the.2008 edition);
b) Added the content of “Origin and Characteristics” (see Chapter 4);
c) Added the content of “adult weight and body size” (see Chapter 6);
d) The content of "reproductive performance" has been changed (see 7.1, 6.1 of the.2008 edition);
e) The content of "Growth and Development" has been changed (see 7.2, 6.2 of the.2008 edition);
f) The contents of “carcass traits” and “muscle quality” have been changed (see 7.3 and 7.4, 6.3 of the.2008 edition);
g) The content of “Determination Method” has been changed (see Chapter 8, Chapter 5 of the.2008 edition);
h) Combined "breeding value" and "breeding pig production requirements" into "breeding basic requirements" and changed the corresponding content (see Chapter 9,.2008
7 and 8 of the.2011 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee on Animal Husbandry Standardization (SAC/TC274).
This document was drafted by. South China Agricultural University, Huazhong Agricultural University, National Animal Husbandry Station, Guangdong Agricultural Technology Extension Center, Guangdong
Xin Seed Technology Co., Ltd., Guangxi Yangxiang Co., Ltd., Hunan Pig Industry Association, Beijing Zhongyu Pig Co., Ltd., Chifeng
Jiayu Seed Technology Co., Ltd. and Xinjiang Tiankang Animal Husbandry Technology Co., Ltd.
The main drafters of this document are. Wu Zhenfang, Hong Linjun, Zhao Shuhong, Qiu Xiaotian, Liu Wanghong, Xie Shuihua, Cai Gengyuan, Ye Jian, Zhao Yunxiang,
Cui Qingming, Wu Jianliang, Hao Wenjie, Huang Tao.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2008 as GB 22284-2008, and converted to GB/T 22284-2017 due to streamlining and integration of mandatory national standards.
2008;
---This is the first revision.
Large white pig breeder
1 Scope
This document specifies the origin and characteristics of Large White pig breeders, their body shape and appearance, adult weight and size, production performance, and basic requirements for breeding.
The determination method is described.
This document applies to Large White breeding pig evaluation.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
NY/T 820 Technical Specifications for Breeding Pig Registration
NY/T 821 Technical Specification for Determination of Pork Quality
NY/T 822 Procedure for determination of production performance of breeding pigs
NY/T 825 Technical specification for determination of carcass traits of lean pigs
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Origin and characteristics
Large White Pig, also known as Yorkshire Pig, originated in Yorkshire, England and the surrounding areas in northern England. It is now widely distributed in the world.
It has the characteristics of high fertility, fast growth rate and strong adaptability.
5.Body shape and appearance
The Large White Pig has white fur all over its body, with occasional dark spots. It has a rectangular body shape and a large build. It has a medium-sized head, a straight or slightly concave nose,
The ears are erect, the back and waist are straight, the limbs and hooves are strong, the front scapula is wide, the back is broad, and the hindquarters are full. See Appendix A for photos of Large White pig breeders.
6 Adult weight and size
Adult boars (23-25 months old) weigh no less than 277.0 kg, are no less than 157.0 cm long, no less than 90.0 cm tall, and have a chest of no less than 100 kg.
The circumference of an adult sow (third litter, two months of gestation) shall not be less than 152.0cm; the weight of an adult sow (third litter, two months of gestation) shall not be less than 215.0kg, the length of the sow shall not be less than 145.0cm, and the height of the sow shall not be less than 152.0cm.
Less than 77.0cm, chest circumference not less than 135.0cm.
7 Production performance
7.1 Reproductive performance
The age of the boar is not less than 225 days and the weight is not less than 140.0 kg. The age of the sow is 210 days to 250 days and the weight is not less than
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GB 22284-2008
Large yorkshire breeding pigs
ICS 65.020.30
B43
National Standards of People's Republic of China
Yorkshire pigs
Posted 2008-08-12
2008-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
All the technical contents of this standard is mandatory.
The standard proposed by the People's Republic of China Ministry of Agriculture.
This standard by the National Standardization Technical Committee of animal husbandry.
This standard was drafted. South China Agricultural University, Beijing Municipal Bureau of Agriculture, Ministry of Agriculture swine Quality Supervision and Testing Center (Guangzhou), Guangdong Province
Food import and export company in Dongguan Tangxia farms, Zhongshan Foodstuffs Import and Export Corporation Whitehead farms.
The main drafters of this standard. Chen Yaosheng, Meike Yi, Li Jiaqi, Wu Qiuhao Sun Yinan, Chen Jianxiong.
Yorkshire pigs
1 Scope
This standard specifies the physical characteristics of Yorkshire pigs, production performance, breeding value and pig appearance requirements.
This standard applies to the assessment of Yorkshire pigs and sales.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB 16567 species of animal quarantine transporting technical specifications
NY/T 820-2004 Swine Registry Technical Specification
NY/T 822-2004 pig production performance of procedures
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
An estimate individual breeding value, expressed breeding value of the individual, it is a quantitative phenotype real value can be passed to the next generation
Parts, namely individual additive effects.
4 physical characteristics
Yorkshire white fur body, allowing a small amount of dark spots occasionally, medium size head, nose straight or slightly concave face, ears erect, waist straight.
Limb hoof robust, front shoulder blade width, back width, plump hindquarters, rectangular shape and other characteristics.
5 Performance Measurement
5.1 Growth performance, carcass quality measured by the NY/T 822-2004 executed.
5.2 Determination of reproductive performance by NY/T 820-2004 executed.
6 Performance
6.1 Reproductive Performance
Sow puberty 165 days to 195 days, suitable breeding age 220d ~ 240d, weighing more than 120kg. First TNB
Producing nine or more, by the middle of 10 or more; 21-day litter weight 40kg more than the beginning of production, the production of more than 45kg.
6.2 Growth
Up to 100kg weight age 180 days or less, and feed conversion ratio is 2.8 or less, 100kg live weight backfat thickness 15mm or less, 100kg
Weight eye muscle area of 30cm2 or more.
6.3 Carcass Quality
When 100kg weight slaughter, slaughter rate of 70% or more, eye muscle area of 30cm2 or more, the proportion of 32% or more legs, carcass backfat thickness
18mm or less, 62% lean carcass. Excellent meat, no gray, soft, water seepage, dark, dry and hard and other low-grade meat.
Seven kinds of practical value
7.1 conformation consistent with the characteristics of the species.
7.2 normal external genitalia, no genetic disorders and loss of levy, effective teat number more than 6 pairs, arranged in neat rows.
7.3 pigs or both parents through individual performance measurement, main economic traits, ie total litter size, age weight of 100kg, 100kg live weight
EBV value backfat thickness, complete information.
7.4 Sources pig blood and clear, Profile, pedigree records are complete.
7.5 good health.
Appearances claim 8 pigs
8.1 in line with the value of the species requirements.
8.2 There are pigs certificate, earmark be legible, accurate and complete archives, Quality Assurance personnel signature.
8.3 GB 16567 species of animal transported in accordance with the technical specifications issued by the quarantine quarantine certificates.
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