The plants and husks are basically big grass. I feed them whenever I have them. Corn is not good for anyone unless in moderation, and unless you are raising a pig and want lots of bacon and fatback and it doesn't need to live a long, productive life. Then bring on the corn!
I feed whole corn as part of my hens' diet and the goats get a few kernels as treats. I feed it fermented to the pigs and the goats won't touch it.