"Brewer rice" refers to the small fragments of rice that break off during the milling process when making polished white rice. It is a byproduct of rice production and is sometimes used as an ingredient in pet food. Full definition
We still have concerns about the use of artificial preservatives and artificial dyes, as well as the heavy use of fillers like brewers rice and ground whole wheat, but the food also contains some good ingredients. (dogfoodinsider.com)
The problem with brewers rice is that it is a byproduct of the rice milling process and it consists of tiny fragments of milled rice which contain very little nutritional value. (pawster.com)
Thus, brewers rice does not contain a large amount of nutritional value but it is not harmful for dogs unless they are allergic. (dogfoodselector.com)