Fecal starch is an indicator of how well starch is digested in dairy feed. High levels of fecal starch are related to decreased milk production.Total Tract Starch Digestibility can be calculated from fecal starch.

More information on sampling and interpreting the fecal starch test is available at: https://uwlab.webhosting.cals.wisc.edu/wp-content/uploads/sites/17/2019/04/Fecal-Starch-Factsheet.pdf

To submit samples to the lab use a manure form from: https://uwlab.soils.wisc.edu/manure/