Fig. 1

Phylogenetic relationship and population structure of the three Henan breeds compared with 43 Eurasian breeds. a IBS-based neighbor joining tree; b F_ST based neighbor-net tree. The scale bar represents a 0.01 base substitution per site; c Principal component of the 46 Eurasian breeds; d Principal component of 39 Chinese indigenous breeds; and e Ancestral lineage compositions of the 46 Eurasian breeds revealed by ADMIXTURE analysis. K values on the Y-axis are the number of hypothetical ancestral populations. Full name of each breed is shown in Additional file 2: Table S1. NC: North China, EC: East China, CC: Center China, SC: South China, SWC: Southwest China, PC: Plateau China [3]