highly significantP < 1 × 10 −10
Due to the small-effect of the locus on milk production traits, the analysis of production data used a multi-trait meta-analysis [ 11 ] strategy while a standard association test was conducted for milk phosphorus concentration. Peak significance for phosphorus concentration was observed for two variants mapping to intron 2 of the SLC37A1 gene (rs109254133 and rs208161466; P < 1 × 10 −10 ), both of which were also highly significant in the multi-trait meta-analysis ( P < 1 × 10 −10 ) and in complete LD in the sequenced animals (Additional file 1 : Table S2).