Publication Title
Toxins
Document Type
Article
Abstract/Description
Fescue toxicosis impacts beef cattle production via reductions in weight gain and muscle development. Isoflavone supplementation has displayed potential for mitigating these e ects. The objective of the current study was to evaluate isoflavone supplementation with fescue seed consumption on rumen and serum metabolomes. Angus steers (n = 36) were allocated randomly in a 2 2factorial arrangement of treatments including endophyte-infected (E+) or endophyte-free (E ) tall fescue seed, with (P+) or without (P ) isoflavones. Steers were provided a basal diet with fescue seed for 21 days, while isoflavones were orally administered daily. Following the trial, blood and rumen fluid were collected for metabolite analysis. Metabolites were extracted and then analyzed by UPLC-MS.The MAVEN program was implemented t oidentify metabolites for MetaboAnalyst 4.0 and SAS 9.4 statistical analysis. Seven differentially abundant metabolites were identified in serum by isoflavone treatment, and eleven metabolites in the rumen due to seed type (p < 0.05). Pathways a ected by treatments were related to amino acid and nucleic acid metabolism in both rumen fluid and serum (p < 0.05). Therefore, metabolism was altered by fescue seed in the rumen; however, isoflavones altered metabolism systemically to potentially mitigate detrimental e ects of seed and improve animal performance.
Department
Agricultural Sciences and Natural Resources
First Page
1
Last Page
17
DOI
10.3390/toxins12120744
Volume
12
ISSN
2072-6651
Date
11-26-2020
Citation Information
Ault-Seay, Taylor B.; Melchior-Tiffany, Emily A.; and Clemmons, Brooke A., "Rumen and Serum Metabolomes in Response to Endophyte-Infected Tall Fescue Seed and Isoflavone Supplementation in Beef Steers" (2020). Faculty Publications. 6.
https://digitalcommons.tamuc.edu/ag-science-faculty-publications/6
