Abstract
Metabolomics is a bottom-up approach to studying metabolism in living cells, tissues, organoids, or even whole organisms. In conjunction with genomics and proteomics, it is a crucial tool for better understanding complex biological systems. In comparison to genomics or proteomics, metabolomics more directly reflects the phenotype since it encompasses events that occur downstream of gene expression. In the field of poultry or avian diseases, this method is now well established, although it could have more innovative applications in the future. For example, 13C-guided metabolomics and flux analysis could be used to identify biochemical pathways associated with heat or immune stress. It could also help to explore the effects of alternatives to antimicrobials on the intestinal health of poultry and their action on avian pathogens, including the mechanisms of resistance and persistence. In this review, we discuss some basic principles of metabolomics and its current and potential applications in poultry.
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