Distillers grain is what the grain is called after going through the fermentation/distillation process.
The ethanol is ‘removed’ from the grain, made into whiskey, vodka, whatever. Others here are better source of information than I am on that.
The grain left is the distillers grain.
Distillers grain has many forms, depending on the process used, but it’s usually just wet soggy mash.
That’s the stuff used for livestock.
I’m not sure I gave a good answer.
Yes, you did. Thank you! :-)