I currently get about 150lbs of spent brewers grain a week and dry it out for dairy goats and rabbits. If any goes bad I feed to the chickens. Well, the brewery is expanding in March and is anticipating producing 1500lbs. of spent brewers grain a week. With that in mind my wife and I are considering what to raise with the excess SBG. The obvious choices are beef cattle and hogs. We have the ability to pasture both. Being in NW Ohio, I'm leaning towards hogs just because they can be grown out in 5 or 6 months and wouldn't take up as much pasture and can be finished prior to the cold months of January and February. I've also read where people create compost beds and grow mushrooms.

For those of you familiar with spent brewers grain, my question to you would be, if given an extra 1500lbs. a week, what would you do?

What a wind fall! With 1500 lbs. of spent grains I would consider both hogs and mushrooms.
Where I live the market demand for pork has taken a big downturn for feeders and breeders but mushrooms are always going to sell, especially if you grow some of the big restaurant desirables such as Shitake, Chanterelle, Crimini, and Oysters.
Cattle would take more space per paddock than hogs but hogs need to be moved more often, so take that into account when deciding on beef or pork.
Mushrooms take very little space for large quantities but they do require some special conditions for a commercial operation to succeed.

Redhawk

(I raise AGH and am getting ready to move into chickens, ducks and mushrooms for sale)

Look at this topic
Flour from brewers wasre