If you are looking for advice on harvesting and feeding corn at various stages of maturity, an online guide from the University of Wisconsin can help.

"Harvesting & Feeding Guidelines for Corn at Various Stages of Maturity" provides harvesting and feeding considerations based on harvest stage, yield potential, moisture, crude protein, neutral detergent fiber, fiber digestibility, starch and forage-to-grain ratio.

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Source: University of Wisconsin-Extension Dairy Cattle Nutrition