GB/T 18868-2024Rapid determination of moisture, crude protein, crude fibre, crude fat, lysine and methionine in feeds - Near infrared spectroscopy (English PDF)
饲料中水分、粗蛋白质、粗纤维、粗脂肪、赖氨酸、蛋氨酸快速测定 近红外光谱法
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Issued by
State Administration for Market Regulation; Standardization Administration of China
Level / Type
National · Recommended
Issue date
October 26, 2024
Implementation date
May 1, 2025
Scope
GB/T 18868-2024 is the English-translated version of 饲料中水分、粗蛋白质、粗纤维、粗脂肪、赖氨酸、蛋氨酸快速测定 近红外光谱法.
GB/T 18868-2024 is the Chinese standard "Rapid determination of moisture, crude protein, crude fibre, crude fat, lysine and methionine in feeds - Near infrared spectroscopy".
Its scope clause reads: This document describes the rapid determination of moisture, crude protein, crude fiber, crude fat, lysine and methionine in feed using near infrared spectroscopy. method.
This document applies to the moisture, crude protein content of compound feed, concentrated feed, concentrate supplement and feed raw materials (excluding mineral feed raw materials).
Rapid determination of protein, crude fiber and crude fat, as well as lysine and protein in compound feeds, concentrate feeds, concentrate supplements and protein feeds Rapid determination of amino acids. Its clauses include terms and definitions.
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Document preview — GB/T 18868-2024
National Standard of the People's Republic of China
- ICS
- 65.120
- Classification
- B 46
- Replacing
- GB/T 18868-2002
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.1 near infrared spectrum
- 3.2 near infrared spectrometernear infrared
- 3.3 measuring accessories
1 Scope
This document describes the rapid determination of moisture, crude protein, crude fiber, crude fat, lysine and methionine in feed using near infrared spectroscopy.
method.
This document applies to the moisture, crude protein content of compound feed, concentrated feed, concentrate supplement and feed raw materials (excluding mineral feed raw materials).
Rapid determination of protein, crude fiber and crude fat, as well as lysine and protein in compound feeds, concentrate feeds, concentrate supplements and protein feeds
Rapid determination of amino acids.
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 latest version (including all amendments) applies to this document.
In this document.
GB/T 6432 Determination of crude protein in feeds - Kjeldahl method
GB/T 6433 Determination of crude fat in feeds
GB/T 6434 Determination of crude fiber content in feed
GB/T 6435 Determination of moisture in feeds
GB/T 15399 Determination of sulfur amino acids in feeds—Ion exchange chromatography
GB/T 18246 Determination of amino acids in feed
GB/T 20195 Preparation of animal feed samples
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 near infrared spectrum
The sample's absorption intensity of light in the near-infrared spectral range of 770 nm to 2 500 nm (12 900 cm-1 to 4 000 cm-1).
3.2 near infrared spectrometernear infrared
An instrument for measuring the near-infrared spectrum of a sample, with detection modes such as diffuse reflection or transmission.
Note. The spectral range of the instrument is the near-infrared full spectrum range of 770 nm ~ 2 500 nm (12 900 cm-1 ~ 4 000 cm-1), part of the full spectrum range or selected
The wavelength or wave number of the wavelength. According to the optical principle, it can be divided into dispersion type, interference type or athermal type.
3.3 measuring accessories
Components that carry the specimen. […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 25 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 6432Determination of crude protein in feeds—Kjeldahl method
- GB/T 6433Determination of crude fat in feeds
- GB/T 6434Determination of crude fiber content in feeds
- GB/T 6435Determination of moisture in feedstuffs
- GB/T 15399Determination of sulfur amino acids in feeds - Ion exchange chromatography
- GB/T 18246Determination of amino acids in feeds
Cited by
- GB/T 20193-2025Feed material - Bone meal, meat and bone meal
- GB/T 20807-2025Supplementary concentrate of sheep
- GB/T 22919.10-2024Aquatic feeds - Part 10: Formula feed for tilapia
- GB/T 22919.12-2024Aquatic feed - Part 12: Formula feed for crucian carp
- GB/T 22919.6-2024Aquatic feeds - Part 6: Formula feed for grouper
- GB/T 22919.8-2024Aquatic feeds - Part 8: Formula feed for basa catfish
Similar standards
Editions of GB/T 18868
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 18868-2024 | Rapid determination of moisture, crude protein, crude fibre, crude fat, lysine and methionine in feeds - Near infrared spectroscopy | first revision | Current |
| GB/T 18868-2002 | Rapid determination of moisture, crude protein, crude fibre, crude fat, lysine and methionine in feeds - Near infrared spectroscopy | first issue | Superseded |
This page sells the current edition, GB/T 18868-2024. Earlier editions are listed for reference only.
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Related Standards
GB/T 15399-2018 — Determination of sulfur amino acids in feeds - Ion exchange chromatography
GB/T 18246-2019 — Determination of amino acids in feeds
GB/T 20195-2024 — Animal feed - Preparation of test samples
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