The assembled genome and annotation were deposited in the Genome Warehouse of the National Genomics Data Center (https://ngdc.cncb.ac.cn/gwh/) under BioProject accession code: PRJCA009398 (accession code: GWHBJBF0000000). All raw data were submitted to the Genome Sequences Archive (GSA) of the National Genomics Data Center under BioProject accession code: PRJCA007991. In addition, transcriptomic data of the livers from Peking and Muscovy ducks under two feeding conditions were downloaded from the Sequence Read Archive (SRA) database of the NCBI under accession number SRP144764 (https://www.ncbi.nlm.nih.gov/sra/SRP144764).

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