GB/T 14551-1993
Replaced
T/YLSL 002-2018
Abolished
Group standards
T/YLSL 002-2018 The determination of carbohydrate balance index (CBI) in total mixed ration for ruminants
T/YLSL 002-2018 The determination of carbohydrate balance index (CBI) in total mixed ration for ruminants
Price:
$ 30
Basic Information
Standard Code:
T/YLSL 002-2018
Standard Type:
Group standards
Standard Status:
Abolished
is_force_gb:
no
CCS Name:
Food processing and products
ICS Name:
Integrated agriculture and forestry
Publish Date:
2019-03-01
Implement Date:
2019-03-01
Scope
Scope: This standard specifies the terms and definitions, reagents and solutions, instruments and equipment, measurement procedures, and requirements for repeatability in the determination of the carbohydrate balance index in total mixed rations for ruminants. This standard applies to the determination of the carbohydrate balance index in total mixed rations for ruminants. Main technical content: The measurement steps include sample collection, sample processing, determination of neutral detergent fiber content, determination of physical effective factors, and determination of rumen degradable starch. The measurement indicators and related formulas in this standard are as follows: - **pef4.0**: Equal to the sum of the dry matter mass of feed particles retained on the 19.0 mm, 8.0 mm, and 4.0 mm sieves divided by the total dry matter mass of the sieve sample. - **pef8.0**: Equal to the sum of the dry matter mass of feed particles retained on the 19.0 mm and 8.0 mm sieves divided by the total dry matter mass of the sieve sample. - **pef4.0**: = (DM19.0 mm + DM8.0 mm + DM4.0 mm) ÷ DMt - **pef8.0**: = (DM19.0 mm + DM8.0 mm) ÷ DMt Where: - **DM19.0 mm**: Dry matter mass of feed particles retained on the 19.0 mm sieve, in grams (g). - **DM8.0 mm**: Dry matter mass of feed particles retained on the 8.0 mm sieve, in grams (g). - **DM4.0 mm**: Dry matter mass of feed particles retained on the 4.0 mm sieve, in grams (g). - **DMt**: Total dry matter mass of the sieve sample, in grams (g). - **peNDF4.0**: Equal to the product of the NDF content of coarse feed or the ration and pef4.0. - **peNDF4.0**: = NDF × pef4.0 - **peNDF8.0**: Equal to the product of the NDF content of coarse feed or the ration and pef8.0. - **peNDF8.0**: = NDF × pef8.0 Where: - **NDF**: Neutral detergent fiber content in the dry matter of coarse feed or the ration. - The starch content is calculated using the acid consumption of the feed, total optical rotation, and the o
Development Information
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