Fig. 1

Neighbor-joining trees obtained with six loci concatenation. Each circle represents a unique sequence type. Logarithmic scale is used. To increase the readability of the second tree (b), names of samples have been removed, but can be found in the first tree (a). German cattle samples are in green, whereas the French are in red (our study), or in blue (Chastagner et al. study [9]). The two groups of cattle strains are identified and are clearly distinct from horse strains and American strains