Fig. 2
Identification of 12 QTL for mammary gland morphology. a Correlations between seven udder conformation traits. The values in the upper and lower triangles represent genomic correlations calculated with the signed t values and genetic correlations, respectively. The abbreviations of the traits are in Table 1. Shades of blue and red indicate positive and negative correlation coefficients, respectively. Genetic correlations were provided from the Institute of Animal Breeding from Bavarian State Research center for Agriculture. b Manhattan plot representing the association of 16,816,809 imputed sequence variants in the multi-trait meta-analysis. Red color represents variants with a PMETA less than 2.97 × 10−9