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GB/T 40747-2021 English PDF

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GB/T 40747-2021: Determination of fermentable organic matter(FOM) of ruminant feedstuffs in rumen
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Basic data

Standard ID GB/T 40747-2021 (GB/T40747-2021)
Description (Translated English) Determination of fermentable organic matter(FOM) of ruminant feedstuffs in rumen
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B46
Word Count Estimation 10,113
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 40747-2021: Determination of fermentable organic matter(FOM) of ruminant feedstuffs in rumen

---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.
Determination of fermentable organic matter(FOM) of ruminant feedstuffs in rumen ICS 65.120 CCSB46 National Standards of People's Republic of China Determination of Rumen Fermentable Organic Matter (FOM) in Feed inrumen Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

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 of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed and managed by the National Feed Industry Standardization Technical Committee (SAC/TC76). Drafting organizations of this document. China Agricultural University, Shandong Agricultural University, Hebei Agricultural University, Northeast Agricultural University. The main drafters of this document. Li Shengli, Hu Zhiyong, Du Wen, Huang Wenming, Wang Zhonghua, Cao Zhijun, Yang Hongjian, Li Jianguo, Zhang Xiaoming, Zhang Yonggen, Wang Wei and Dong Xusheng. Determination of Rumen Fermentable Organic Matter (FOM) in Feed

1 Scope

This document describes the determination of rumen fermentable organic matter (FOM) in feed using the nylon bag method. This document is applicable to the determination of rumen fermentable organic matter of plant-based feed materials and total mixed rations (TMR) for cattle and sheep.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 6435 Determination of Moisture in Feed GB/T 6438 Determination of crude ash in feed GB/T 6682 Analytical laboratory water specifications and test methods GB/T 13088-2006 Determination of chromium in feed GB/T 14699.1 Feed sampling GB/T 20195 Preparation of animal feed samples NY/T 34 Dairy Cow Feeding Standard NY/T 815 Beef Cattle Feeding Standard NY/T 816 Meat Sheep Feeding Standard

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Fermentable organic matter (FOM) intherumen Plant-based feed ingredients, total mixed rations (TMR), organic matter that can be fermented by rumen microorganisms. 3.2 Real-time rumen degradation rate realtimerumendegradationrate dp The mass of a certain ingredient degraded after the feed stays in the rumen for a certain period of time accounts for the percentage of the sample. 3.3 Rumen chyme outflow rate outflowrateofrumendigesta The mass of chyme flowing out of the rumen per unit time accounts for the percentage of the total mass of chyme in the rumen. 3.4 Effective rumen degradation rate effectiverumendegradationrate The degradation rate calculated based on the real-time degradation rate at different time points and the outflow rate of rumen chyme under actual feeding conditions.

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