Look at the findings in light of everything else the cow and the feed lab are saying as there can be many possible causes for one symptom. If you are seeing bits of corn, is that because the grind-size or kernel processing is too coarse, the kernel too hard/vitreous or is it passing through the rumen too fast? Likewise, if there are recognizable pieces of hay or haylage or corn stalks; is the neutral detergent fiber (NDF) digestibility low, are intakes/passage too high, too small particle size or are the cows sorting the ration?
Sorting through the various possibilities to arrive at the appropriate conclusion and course of action is part art and part science.
“Pay attention to what your cows are telling you, paw through some cow pies on your own, figure out what is normal for your herd and watch for changes,” notes Rymph.
Source: Purina Animal Nutrition LLC