This document discusses factors that affect the digestion of feed by cattle in the rumen. The rumen is where bacteria break down plant matter and the optimal pH for digestion is 6.2-7. Factors like particle size of feed, retention time in the rumen, and dry matter intake can impact the breakdown of plant fibers and nutrients. Diets with over 18% protein typically support greater dry matter intake and digestion than diets with under 18% protein.

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