Metabolomics analysis reveals large effect of roughage types on rumen microbial metabolic profile in dairy cows
文献类型: 外文期刊
作者: Zhao, S. 1 ; Zhao, J. 2 ; Bu, D. 2 ; Sun, P. 2 ; Wang, J. 2 ; Dong, Z. 1 ;
作者机构: 1.Chinese Acad Sci, Inst Microbiol, State Key Lab Microbial Resources, Beijing, Peoples R China
2.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Beijing 100193, Peoples R China
3.Inner Mongolia Univ Nationalities, Coll Anim Sci & Technol, Tongliao, Inner Mongolia, Peoples R China
关键词: dairy cows;metabolomics;roughages;rumen fluid
期刊名称:LETTERS IN APPLIED MICROBIOLOGY ( 影响因子:2.858; 五年影响因子:2.776 )
ISSN:
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收录情况: SCI
摘要: The aim of our study was to determine the effect of diets with different types of roughage on the ruminal microbial metabolite profile in dairy cows. Holstein dairy cows were fed a diet containing either corn stover (CS group) or a mixture of alfalfa hay, Leymus chinensis hay and corn silage (MF group) at 0700 and 1900h daily. Rumen fluid was sampled from each cow through a ruminal cannula at 0630 and 1030h, and the mixed ruminal fluid from 3day in each cow was analysed using nuclear magnetic resonance (NMR) spectroscopy. A multivariate analysis revealed a significant difference between the ruminal metabolome of the CS and MF groups at both time points. The MF group had higher levels of acetate, valerate, hydrocinnamate and methylamine and lower levels of glucose, glycine, propionate and isovalerate than those in the CS group. Our results showed that different types of roughages can significantly influence the ruminal microbial metabolome, especially with regard to organic acids, amines and amino acids
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