Where can I find the chemical make-up of various feedstuffs?

i.e. % water, and % of main components, (carbs, fiber, protein,etc)Where can I find the chemical make-up of various feedstuffs?
feedstuffs or foodstuffs.





If you really mean feedstuffs, there are hundreds of references:





Feeds and Feeding


Dairyman's Handbook


USDA website





I have listed one website that I found that was specific to forages. You can also find feed tags at the various feed producers web sites.Where can I find the chemical make-up of various feedstuffs?
Buy them and read what they are made of.
Go for the USDF website!!!