›› 2018, Vol. 45 ›› Issue (12): 3471-3478.doi: 10.16431/j.cnki.1671-7236.2018.12.020

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Study on the Correlation Between the CNCPS Fractions and Furosine Content in DDGS with Different Heat Treatment

XU Hongjian, ZHANG Liyang, LIU Xin, JIANG Xin, LI Xin, ZHANG Yonggen   

  1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
  • Received:2018-05-22 Online:2018-12-20 Published:2018-12-21

Abstract:

The aim of this study was to evaluate the nutritional value of different degrees heat-treated of corn dried distillers grains and solubles (DDGS) using the principle and method of Cornell Net Carbohydrate Protein System (CNCPS),and to explore the correlation of CNCPS components and its ruminal degradability and intestinal digestibility to furosine which was Maillard reaction intermediate.This study was respected to provide new methods and ideas for the evaluation of feed nutritional value.The wet DDGS were dried at different temperatures (110,120,130℃) for different times (0.5,1.0,1.5 h),the protein components and their ruminal degradability and intestinal digestibility were estimated by conventional chemical analysis combined with CNCPS and AMTS-Cattle database,and the furosine content was determined by high performance liquid chromatography.Then the correlation between ruminal degradability and intestinal digestibility of the CNCPS components and furosine content were researched and the corresponding regression equations were established.The results showed that:①There were significant differences in furosine content,protein components,ruminal degradable,ruminal non-degradable and intestinal digestibility of protein components among DDGS treated with different degrees of heat (P<0.05).② There were significant correlation between furosine content and PA2,PB1,PB2 and PC components,RDPB2,RUPB2,RUPC and TRUP components,and IDGPB2 components (P<0.05).And the predictive equations could be established by regression.In summary,there were significant correlations between the protein components and furosine content of DDGS with different degrees of heat treatment,and the furosine content could be used to estimate the rumen degradability and intestinal digestibility of protein components in DDGS treated with different degrees of heat.

Key words: DDGS; heat treatment; CNCPS; furosine; correlation

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