The study, entitled “Effect of Maternal Diet on Select Fecal Bacteria in Mares and Their Foals,” involved assigning pregnant Thoroughbred mares to one of two treatment groups: one group was fed an oat-based concentrate and the other group a corn- and wheat-middling-based concentrate. The team chose oats and corn as the starch sources in the pelleted concentrates because oats are considered more easily digestible for a horse, while corn and wheat middlings are slightly less so.

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