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GB/T 22285-2025: Duroc breeding pig
Status: Valid GB/T 22285: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22285-2025 | English | 199 |
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Duroc breeding pig
| Valid |
GB/T 22285-2025
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| GB 22285-2008 | English | 159 |
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[GB/T 22285-2008] Duroc breeding pig
| Valid |
GB 22285-2008
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PDF similar to GB/T 22285-2025
Basic data | Standard ID | GB/T 22285-2025 (GB/T22285-2025) | | Description (Translated English) | Duroc breeding pig | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B43 | | Classification of International Standard | 65.020.30 | | Word Count Estimation | 10,167 | | Date of Issue | 2025-01-24 | | Date of Implementation | 2025-08-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 22285-2025: Duroc 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.
ICS 65.020.30
CCSB43
National Standard of the People's Republic of China
Replace GB/T 22285-2008
Duroc pig breeder
Released on 2025-01-24
2025-08-01 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 22285-2008 Duroc Breeding Pig. Compared with GB/T 22285-2008, except for structural adjustment and editing,
In addition to the changes in performance, the main technical changes are as follows.
a) Deleted the content of “Terms and Definitions” (see 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 modified (see 7.3, 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. Huazhong Agricultural University, National Animal Husbandry Station, Shandong Animal Husbandry Station, Foshan University of Science and Technology, Guangxi Yangxiang Co., Ltd.
Co., Ltd., Jiangxi Zhengbang Breeding Co., Ltd., Hubei Jinxu Agricultural Development Co., Ltd., Jiahe Agriculture and Animal Husbandry Co., Ltd., Shanghai Xiang
Xin Livestock and Poultry Co., Ltd., Fujian Yongcheng Agriculture and Animal Husbandry Technology Group Co., Ltd., Henan Zhengyang Breeding Pig Farm, and Hubei Gongfu Fuchang Breeding Pig Co., Ltd.
The main drafters of this document are. Zhao Shuhong, Liu Wanghong, Qiu Xiaotian, Liu Zhansheng, Zhao Yunxiang, Liu Xiangdong, Wang Chuang, Zhang Zhao, Tang Fan, Han Xuejun,
Xue Yongqin, Peng Feng, Zeng Pan, Wu Tingting, Fu Liangliang, Hu Junyong, Liu Xiaolei, Li Xinyun, Xu Xuewen.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2008 as GB 22285-2008, and converted to GB/T 22285-2017 due to streamlining and integration of mandatory national standards.
2008;
---This is the first revision.
Duroc pig breeder
1 Scope
This document specifies the origin and characteristics, body shape and appearance, adult weight and size, production performance, and basic requirements for breeding of Duroc pig breeders.
The assay method is described.
This document applies to the evaluation of Duroc breeder pigs.
2 Normative references
The contents of the following documents constitute the 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
Duroc pigs are native to New York and New Jersey in the United States and are now widely distributed around the world. They have fast growth rate, high lean meat rate and
Strong adaptability and other characteristics.
5.Body shape and appearance
The Duroc pig has a reddish brown coat, with a few being brown, brown-gray, gray-black, etc. A few dark spots are allowed.
Small, short and straight mouth, medium-sized ears, semi-erect and forward-leaning. Back waist and abdomen are straight, body is wide, hindquarters are well-developed, muscles are plump, limbs are thick and strong.
Photos of Rock pig breeders are shown in Appendix A.
6 Adult weight and size
Adult boars (23-25 months old) weigh no less than 270.0 kg, are no less than 150.0 cm long, no less than 85.0 cm tall, and have a chest of 1.
The circumference of an adult sow (third litter, two months of gestation) shall not be less than 147.0cm; the weight of an adult sow (third litter, two months of gestation) shall not be less than 265.0kg, the length of the sow shall not be less than 140.0cm, and the height of the sow shall not be less than 147.0cm.
Less than 85.0cm, chest circumference not less than 153.0cm.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 22285-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 22285-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 22285-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 22285-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 22285-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22285-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
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