Fig. 2
From: The gut microbiome of horses: current research on equine enteral microbiota and future perspectives
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs42523-019-0013-3/MediaObjects/42523_2019_13_Fig2_HTML.png)
The anthropogenic impact on horse microbiomes. Microbiomes of non-domesticated horses (left) include a more diverse spectrum of microbiota compared to those of domesticated horses (right). Beyond age, differences in housing and pasture habits [164], composition of feeding diets [165, 166], contact with humans, veterinary health care and medication seem to be among the most influencing factors for equine microbiomes [101]. Interestingly, similar observations are available for the humans, since indigenous populations seem to have a much broader spectrum of microbiota compared with industrialized countries [104]s