Transcriptomics and metabolomics provide insights into meat flavor precursor differences between different duck lines

Area of Science:

• Animal Science
• Biochemistry
• Genomics

Background:

• Duck meat quality is influenced by genetic factors affecting flavor.
• Understanding molecular mechanisms of flavor precursors is crucial for breeding programs.

Purpose of the Study:

• To investigate the molecular basis of meat flavor precursor differences in Jinling White duck breast muscle.
• To compare two duck lines (AB and DD) with distinct growth rates.

Main Methods:

• Transcriptomic and metabolomic analyses were performed on duck breast muscle at 49 days of age.
• Integrated omics analysis identified differentially expressed genes and metabolites.
• Key pathways related to lipid metabolism were highlighted.

Main Results:

• The slower-growing AB duck line showed higher pH and fatty acid content compared to the faster-growing DD line.
• 610 differentially expressed genes and 139 differential metabolites were identified.
• Glycerophospholipid, arachidonic acid, and linoleic acid metabolism pathways were significantly affected.

Conclusions:

• Key genes (PCYT1B, PLA2G12B) and metabolites (e.g., phosphatidylcholine) are critical for duck meat flavor precursor formation.
• This research provides insights into the genetic regulation of duck meat flavor.
• Findings support genetic improvement strategies for enhancing duck meat quality.