Check out the most recent manga Uma Musume - Break Time at CoffeeManga. Manga Uma Musume - Break Time is constantly updated at CoffeeManga. Don't neglect to review the various other manga updates. A list of manga collections CoffeeManga is in the Manga Checklist menu.
From the one who made the "Spare Time" series, Take Nekonetoru. This is a 4-panel manga series about Uma Musume where we can see the girls horsing around in their daily lives.