Fig. 3
From: Genome-wide association studies for feed intake and efficiency in two laying periods of chickens
Manhattan and Q–Q plots of genome-wide association P values for residual feed intake. RFI1 and RFI2 represent residual feed intake in laying periods between 37 and 40 weeks and between 57 and 60 weeks, respectively; RFI represents residual feed intake in the bivariate analysis; LGE64 linkage group LGE64, GIF genomic inflation factor. The horizontal gray and gray dashed lines indicate the whole-genome significance (P value = 8.43e−7) and genome-wise suggestive significance thresholds (P value = 1.69e−5), respectively