Obviously, you did not read it.Well, dairy cattle overwintering on hay generally maintain weight, while dairy cattle overwintering on silage generally gain weight. There's nothing new or faddish about silage. It's made in vast quantities every year, and has been for decades. Silage is a fermented fodder.
As I previously stated FF is like a religion to the followers of it... but I will now leave this thread as to not hijack it anymore..
Have a great day.