Whole grains are far more nutritious than the refined grains found in most dry dog food with grains.
A whole grain contains:
the bran (outer layer with B vitamins and minerals)
germ (core with B vitamins, vitamin E, healthy fats and antioxidants)
endosperm (starch & carbohydrate middle layer with some proteins and vitamins)
A refined grain just contains:
A whole grain contains:
endosperm (starch & carbohydrate middle layer with some proteins and vitamins)
The extra fibre and nutrients in whole grains allow healthy microbes to flourish in the gut and provide more sustained energy for play any time of the day.