Fig. 2

A candidate functional gene, SERPINB6, was identified by 3 analyses, including EN-1SE model analysis, WGCNA and differential expression analysis. A Correlation analysis between the module and carcass traits (n = 350). Red represents a positive correlation, blue represents a negative correlation, and a darker color indicates a stronger the correlation. B Venn diagram of 26 overlapping hub genes associated with carcass traits based on WGCNA. C Histogram of differential expression of overlapping genes identified from the differential expression analysis, EN-1SE model or WGCNA. Low indicates the low group, and High indicates the high group. *: P < 0.05, **: P < 0.01, ***: P < 0.001. D Venn diagram of 1 overlapping gene (SERPINB6) associated with the EW based on the genes with non-zero effects, hub genes and DEGs. EN-1SE: elastic net with parameters determined based on the one standard error rule, WGCNA: weighted gene co-expression network analysis, DEGs: differentially expressed genes, LW: live weight, DW: dressed weight, EW: eviscerated weight, BMW: breast muscle weight