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GB/T 21035-2025: Feed safety assessment - Teratogenicity test
Status: Valid GB/T 21035: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21035-2025 | English | 249 |
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Feed safety assessment - Teratogenicity test
| Valid |
GB/T 21035-2025
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| GB/T 21035-2007 | English | 189 |
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Feed safety evaluation -- Feeding teratogenicity test
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GB/T 21035-2007
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PDF similar to GB/T 21035-2025
Basic data | Standard ID | GB/T 21035-2025 (GB/T21035-2025) | | Description (Translated English) | Feed safety assessment - Teratogenicity test | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B46 | | Classification of International Standard | 65.120 | | Word Count Estimation | 12,162 | | Date of Issue | 2025-06-30 | | Date of Implementation | 2026-01-01 | | Older Standard (superseded by this standard) | GB/T 21035-2007 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21035-2025: Feed safety assessment - Teratogenicity test---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21035-2025
ICS 65.120
CCSB46
National Standard of the People's Republic of China
Replaces GB/T 21035-2007
Feed safety evaluation teratogenicity test
Released on June 30, 2025
Implementation on January 1, 2026
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 21035-2007 "Feed Safety Evaluation - Feeding Teratogenicity Test" and is consistent with GB/T 21035-2007.
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Added some terms and definitions (see Chapter 3);
b) Added test principles (see Chapter 4);
c) Added solution preparation (see Chapter 5);
d) Added the types of instruments and equipment (see Chapter 6);
e) Added test substances (see Chapter 7)
f) Added requirements for the sex, number, and weight of experimental animals, as well as requirements for the selection of species and strains (see 8.1);
g) Added animal husbandry requirements (see 8.3);
h) Added specific details and requirements for dose grouping, such as the basis for dose selection and maternal mortality (see Chapter 9);
i) Added the test substance preparation method and administration volume (see 10.1.1);
j) The method of administering the test substance to rats in the traditional teratogenicity study has been changed (see 10.1.1, 8.1 of the.2007 edition);
k) Added maternal observation and weighing (see 10.3);
l) Added "Table 1 Live Fetus Appearance Examination Items", "Table 2 Common Abnormalities of Fetal Skeletons" and "Table 3 Common Abnormalities of Fetal Organs".
(see 10.4);
m) The details of specimen preparation methods have been changed (see 10.4.3, 8.6 of the.2007 edition);
n) Added cross-sectional views of fetal rats at different positions (see 10.4.4);
o) Added test report (see Chapter 12).
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 is proposed and coordinated by the National Feed Industry Standardization Technical Committee (SAC/TC76).
This document was drafted by. China Agricultural University, Huazhong Agricultural University, Hunan Agricultural University, Leshan Normal University, China Veterinary Drug Administration
Institute of Quality and Standardization, Chinese Academy of Agricultural Sciences, Aba Tibetan and Qiang Autonomous Prefecture Animal Husbandry Science and Technology Research Institute, Jinchuan, Aba Prefecture, Sichuan Province
DOLE YAK LIMITED.
The main drafters of this document are. Cheng Linli, Shen Jianzhong, Tang Shusheng, Qi Desheng, Wang Xu, Zeng Jianguo, Liu Xiubin, Liu Zhaoying, Yang Xiuyu, Song Rong,
Wei Shuling, Lin Tao, Du Ruiliang, He Xiaoyun, Lei Yanmin, Yang Wenjun, Zhang Yan, Shen Wenbing, and Sun Hongqiang.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2007 as GB/T 21035-2007;
---This is the first revision.
Feed safety evaluation teratogenicity test
1 Scope
This document defines the terms related to the teratogenicity test for feed safety evaluation, and describes the test principles, reagents and solution preparation, instruments and equipment,
The requirements for the content of the test report are specified, including the test substances, experimental animals and feeding management, dosage grouping, operating procedures, data processing and result evaluation.
This document applies to the teratogenicity evaluation of feed and feed additives.
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.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB 14922 Microbiological and parasitological grades and monitoring of laboratory animals
GB/T 14924.1 General quality standard for compound feeds for laboratory animals
GB 14925 Laboratory Animal Environment and Facilities
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
The development of an organism that occurs before an individual is exposed to the test substance before development into an adult (including the embryonic, fetal, and postnatal stages)
Harmful effects such as structural abnormalities, growth changes, functional defects, or death.
3.2
Teratogenicity
The property of the test substance to cause permanent structural abnormalities in the offspring during the critical period of gestation, particularly during organogenesis.
3.3
Maternal toxicity
The test substance causes direct or indirect health damage to the parental pregnant animals, resulting in reduced weight gain, functional abnormalities, signs of poisoning, and even death.
The toxicity of death.
3.4
Fertility rate parturition index
The number of animals that gave birth alive is the percentage of the number of pregnant animals.
3.5
fetal mortality
The percentage of stillbirths to the total number of litters.
3.6
Total number of teratocysts sumofterata
The number of all liveborn babies with malformations.
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