Investigation of graded-level soybean meal diets in red drum (Sciaenops ocellatus) using NMR-based metabolomics analysis

Autor: Justin Yost, Aaron M. Watson, Daniel W. Bearden, T. Gibson Gaylord, Paul A. Sandifer, Frederic T. Barrows, Fabio Casu, Michael R. Denson, John W. Leffler
Rok vydání: 2019
Předmět:
Zdroj: Comparative Biochemistry and Physiology Part D: Genomics and Proteomics. 29:173-184
ISSN: 1744-117X
DOI: 10.1016/j.cbd.2018.11.009
Popis: We investigated changes in the metabolome in juvenile red drum (Sciaenops ocellatus) induced by increasing amounts of soybean meal (0% to 60%) in extruded, fishmeal-free diets using a nuclear magnetic resonance spectroscopy (NMR)-based metabolomics approach in a 12-week feeding trial. All of the diets were composed of ≈40% total crude protein, ≈11% total crude lipid and were energetically balanced. A fishmeal-containing, commercial extruded diet was used as a control diet throughout the trial. Each week, liver, muscle, intestine and plasma samples were collected and analyzed by NMR to provide a "snapshot" of the metabolome at different time points. Results indicate significant time-dependence of the metabolic profiles in various tissues with stable metabolomic profiles forming after about 9-weeks on the experimental diets. We identify a previously unexploited biomarker of potential dietary stress (N‑formimino‑l‑glutamate (FIGLU)) in the fish that may prove to be useful for optimization of alternative diet formulations.
Databáze: OpenAIRE