Rumen Degradation Characteristics and Intestinal Digestibility of Whole Corn Silages from Different Areas

LI Yang, LI Chunlei, ZHAO Hongbo, ZHANG Yonggen

doi:10.3969/j.issn.1006-267x.2015.05.037

Chinese Journal of Animal Nutrition >

2015 , Vol. 27 >Issue 5: 1641 - 1649

DOI: https://doi.org/10.3969/j.issn.1006-267x.2015.05.037

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Rumen Degradation Characteristics and Intestinal Digestibility of Whole Corn Silages from Different Areas

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1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;
2. School of Mathematics and Statistics, Northeast Normal University, Changchun 130024, China;
3. Institute of New Rural Development, Northeast Agricultural University, Harbin 150030, China

Received date: 2014-11-05

Online published: 2015-05-13

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Abstract

The objective of this study was to research the differences in nutritional value, rumen degradation characteristics and intestinal digestibility of whole corn silages from different areas. Five whole corn silage samples were collected from Gansu (A), Shandong (B), Sichuan (C), Shaanxi (D) and Shenyang (E), and the common nutritional components and amino acid composition of feed samples were analysed. Three permanent ruminal cannulated Holstein cows with around 550 kg of body weight were used to evaluate rumen degradation characteristics of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF), and intestinal digestibility of DM, CP and amino acids (AA) by nylon bag technique. The results showed that differences were found in common nutritional components, and rumen effective degradability of DM, CP, NDF and ADF among whole corn silages from different areas. Ranking of the rumen effective degradability of DM, CP, NDF and ADF of whole corn silages from 5 areas from high to low was B >E >A >D >C, C >A >D >B >E, B >A >D >C >E and D >A >C >B >E, respectively. The intestinal digestibility of DM, CP and each amino acid was different. Ranking of intestinal digestibility of DM, CP and total amino acids (TAA) of whole corn silages from 5 areas from high to low was C >A >D >B >E, C >A >B >D >E and A >D >B >C >E, respectively. In conclusion, there were large differences in nutritional component contents, rumen degradation parameters and intestinal digestibility of whole corn silages from different areas. In order to use feed resources more effectively and avoid waste, so rapidly accurate methods should be used to measure the contents of nutrition components in whole corn silage.

Key words： whole corn silage; dairy cows; rumen degradation characteristics; intestinal digestibility

Cite this article

LI Yang, LI Chunlei, ZHAO Hongbo, ZHANG Yonggen . Rumen Degradation Characteristics and Intestinal Digestibility of Whole Corn Silages from Different Areas[J]. Chinese Journal of Animal Nutrition, 2015 , 27(5) : 1641 -1649 . DOI: 10.3969/j.issn.1006-267x.2015.05.037

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