Corn silage is a forage, no different than any other forage. Corn silage has a much higher percentage of forage fiber than corn per pound. While some may believe corn silage is all corn, it’s not. Less corn is required in the ration as the silage contains corn as part of the forage.
Corn silage provides fermentable fiber, which is energy, and brings energy and protein, grown from bacteria. The Smartbacteria do their work using carbohydrates (starch, fermentable fiber, sugars, and silage acids) as their food, making usable energy (VFAs); when finished, they die (or lyse). They are protein for the cow, known as microbial protein and provided at no additional cost.
See more on an all corn silage diet in the video