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West Chazy, New York | Many years ago Penn State did some work on feeding cardboard. From what I remember;
Cardboard is almost pure cellulose. It has about the same energy as corn silage or beet pulp, but almost no protein.
Staples are the greatest risk. Glue, printing, and wax are generally not cause for concern. If acquired already ground, be alert for wood fragments from pallets.
Cardboard is very different from paper. The manufacturing process leaves cardboard very digestible. Newspaper, while very well suited for bedding, is not a good feed.
Another product with similar feed value is wood fines, a byproduct of manufacturing certain types of paper. Extremely fine, like dust. It is usually damp, and somewhat challenging to handle.
Like any byproduct, cardboard works best when blended with a wet and palatable feed. Mix silage, cardboard, and urea, and you have the makings of a pretty decent ration.
Edited by Haleiwa 12/8/2025 13:02
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Cardboard for feed