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GB/T 22284-2025: Large white breeding pig
Status: Valid GB/T 22284: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22284-2025 | English | 199 |
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3 days [Need to translate]
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Large white breeding pig
| Valid |
GB/T 22284-2025
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| GB 22284-2008 | English | 159 |
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2 days [Need to translate]
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[GB/T 22284-2008] Large Yorkshire breeding pigs
| Valid |
GB 22284-2008
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PDF similar to GB/T 22284-2025
Basic data | 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 | 10,118 | | Date of Issue | 2025-02-28 | | Date of Implementation | 2025-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 22284-2025: Large white breeding pig---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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
Foreword
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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