the few dairy farmers left around here that haven't been run out by urban development still do some silage packing for the winter.
there was a time, maybe still is in some areas. that chicken waste/manure was mixed with stuff for the beef cattle to eat.
i don't know if they still do that or not. lot's of it is now sold as compost. and lot's spread on fescue & hybrid bermuda pastures as a fertilizer supplement.
