Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (2): 266-274.DOI: 10.3969/j.issn.1004-1524.2023.02.03

• Animal Science • Previous Articles     Next Articles

LC-MS/MS-based study on effect of rice straw instead of partial corn silage on plasma metabolites of dairy cows

LI Yanan(), YE Wenxing, ZHU Xiangde, CHEN Lin, XU Xiaofeng, ZHANG Lili()   

  1. College of Agriculture, Ningxia University, Yinchuan 750021, China
  • Received:2021-05-01 Online:2023-02-25 Published:2023-03-14
  • Contact: ZHANG Lili

Abstract:

In order to investigate the effect of rice straw replacing part of corn silage on plasma metabolites of dairy cows, LC-MS/MS material separation and identification technology combined with multivariate statistical method was used in this paper to analyze the metabolites of rice straw before and after replacing corn silage. The results showed that after rice straw replaced part of corn silage, a total of 41 differential metabolites were detected in the plasma of the two groups. Twenty-two metabolites including epinephrine, β-hydroxybutyric acid, nicotinamide and cholic acid were up-regulated, and 19 metabolites such as glutathione, cortisol and corticosterone were down-regulated in the experimental group. It could be seen that replacing part of corn silage with rice straw enhanced the fat mobilization of dairy cows and reduced the ability to resist stress. The results provided a reference for the application of rice straw instead of corn silage in dairy cow diet, and provided a new idea for the development and utilization of rice straw resources.

Key words: rice straw, corn silage, dairy cow, plasma, metabolite

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