Animal Nutrition · Dairy ration operations
TMR Dry Matter Adjustment Calculator
Adjust the as-fed amount of a ration ingredient when its dry-matter percentage changes while maintaining the same dry-matter contribution.
- Free to use
- Runs in your browser
- Level B · Industry decision model
- Last reviewed 2026-08-17
Operational decision support
Respond to changing forage moisture without changing dry matter delivered
If silage becomes wetter, more as-fed material is required to deliver the same kilograms or pounds of dry matter. If it becomes drier, less as-fed material is required. Enter the current feeding amount and the old and new dry-matter test results to calculate the adjustment.
Herd-scale impact
Enter the number of animals to see the daily change in feed delivered across the herd. This is useful for mixer loading and daily feed planning.
Frequently asked questions
Does this rebalance the entire TMR?
No. It adjusts one ingredient to preserve its original dry-matter contribution. A complete ration may require additional nutrient and ingredient balancing.
Why should dry matter be retested?
Forages and other wet feeds can change moisture over time, so current measurements provide a better operational basis than a generic default.