Evaluation of Nutrition Values of Different Dried Distillers Grains with Solubles Using Cornell Net Carbohydrate and Protein System and National Research Council Models

CHEN Limei; GE Kongfu; YU Peiqiang; ZHANG Xuewei

doi:10.3969/j.issn.1006-267x.2014.02.033

2014 , Vol. 26 >Issue 2: 541 - 548

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.02.033

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Evaluation of Nutrition Values of Different Dried Distillers Grains with Solubles Using Cornell Net Carbohydrate and Protein System and National Research Council Models

CHEN Limei ,
GE Kongfu ,
YU Peiqiang ,
ZHANG Xuewei

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1. College of Animal Science and Animal Veterinary, Tianjin Agricultural University, Tianjin 300384, China;
2. Tianjin Jialihe Livestock Co., Ltd., Tianjin 300402, China;
3. College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon S7N5A8, Canada

Received date: 2013-08-07

Online published: 2014-01-27

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Abstract

This study was conducted to evaluate the nutrition values of different dried distillers grains with solubles (DDGSs) using Cornell Net Carbohydrate and Protein System (CNCPS) and National Research Council (NRC) models. Corn DDGSs from five manufactures and barley DDGSs from two manufactures in China were selected as samples to determine nutrient composition, and then the protein and carbohydrate subfractions were partitioned using CNCPS. Finally, the digestible nutrient contents and energy values were predicted using NRC models. The results showed as follows: 1) the average contents of crude protein (CP), neutral detergent insoluble crude protein (NDICP) and acid detergent insoluble crude protein (ADICP) in corn DDGSs were all higher than those in barley DDGS, while the average contents of soluble crude protein (SCP), neutral detergent fiber (NDF) and acid detergent lignin (ADL) were lower than those in barley DDGSs. 2) The average contents of intermediately degraded true protein (PB₂), undegradable nitrogen (PC) and unavailable carbohydrate (CC) in corn DDGSs were higher than those in barley DDGSs. 3) Compared with barley DDGSs, the average contents of truly digestible crude protein (tdCP) and total digestible nutrients at maintenance level (TDN_m) in corn DDGSs were a little higher, while the digestible energy at production level (DE_p), metabolizable energy at production level (ME_p), net energy for lactation at production level (NE_Lp) and net energy for maintenance (NE_m) were close in corn and barley DDGSs. The results indicate that corn DDGSs and barely DDGSs in China can be used as dairy feeds to relieve the effects of protein feeds shortage and price increase.

Key words： DDGS; corn; barley; nutrient composition; energy values; dairy cows

Cite this article

CHEN Limei , GE Kongfu , YU Peiqiang , ZHANG Xuewei . Evaluation of Nutrition Values of Different Dried Distillers Grains with Solubles Using Cornell Net Carbohydrate and Protein System and National Research Council Models[J]. Chinese Journal of Animal Nutrition, 2014 , 26(2) : 541 -548 . DOI: 10.3969/j.issn.1006-267x.2014.02.033

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