Small Intestine Degradability of C Component Defined by Cornell Net Carbohydrate and Protein System

CUI Yingcai; LIN Xueyan; SU Pengcheng; WANG Zhonghua

doi:10.3969/j.issn.1006-267x.2013.11.030

Chinese Journal of Animal Nutrition >

2013 , Vol. 25 >Issue 11: 2741 - 2747

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.11.030

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Small Intestine Degradability of C Component Defined by Cornell Net Carbohydrate and Protein System

CUI Yingcai ,
LIN Xueyan ,
SU Pengcheng ,
WANG Zhonghua

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College of Animal Science, Shandong Agricultural University, Tai'an 271018, China

Received date: 2013-05-09

Online published: 2013-10-27

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Abstract

This study was conducted to investigate the small intestine degradability of C protein component defined by the Cornell net carbohydrate and protein system (CNCPS). The ruminal degradability of C component of 10 feed samples from different dairy farms were measured. The small intestine digestibility of C component in raw materials and 12 h ruminal degradation residue were analyzed by in vitro method. The results showed that ruminal degradability rate coefficient (k_c) of C component in the 10 feed samples ranged from 0.39%/h to 3.89%/h, the small intestine digestibility of C component in feed raw materials ranged from 0 to 81.61%, and that in 12 h ruminal degradation residue ranged from 0 to 43.21%, which indicated that there was difference in different feed raw materials and 12 h ruminal degradation residue, and the small intestine digestibility of some feeds was too high to be ignored. It is concluded that C protein component defined by the CNCPS is degradable in the rumen, and some kinds of feed might have high digestibility in the small intestine. The contribution of C component to digestive amino acids in small intestine should be considered.

Key words： CNCPS; C protein component; small intestine digestibility; ruminal degradability

Cite this article

CUI Yingcai , LIN Xueyan , SU Pengcheng , WANG Zhonghua . Small Intestine Degradability of C Component Defined by Cornell Net Carbohydrate and Protein System[J]. Chinese Journal of Animal Nutrition, 2013 , 25(11) : 2741 -2747 . DOI: 10.3969/j.issn.1006-267x.2013.11.030

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