Researchers at Kansas State University have affirmed the potential benefit of wet corn gluten feed in dairy rations. But improved milk yield is not due to improvements in the rumen environment, they say. Rather, it is due to increased dry matter intake.

"Increased (dry matter intake) is likely caused by decreased rumen fill due to feeding a source of NDF with smaller particles and a more rapid disappearance rate," they write in the November's Journal of Dairy Science.