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Dairy Ration Analyzer

DRA home worksheetThe UPenn Dairy Ration Analyzer is a Microsoft Excel® spreadsheet for analyzing dairy cattle rations. The DRA is based on CPM 3.0.8.

Current Version: 1801-17b (designed to run under Microsoft Excel 2016 - Does not work on Mac version).

UPenn DRA Notes and Features

 DRA group analyzerDRA evaluation worksheet

  • Requires Microsoft Excel 2013. Does not run in the Excel Web App.
  • Group feeding analysis
  • Uses built in Excel linear or non-linear solver.
  • Imports CPM feedbanks, but not sessions.
  • Standard or alternate liquid passage rates option
  • Standard peptide model or alternate peptide option
  • Optional calculated protein B3 rate.
  • Adjustable enzyme rate.
  • Report layouts follow CPM format
  • The spreadsheet is released under the Apache License 2.0

Pricing and Purchase

The latest version of the UPenn Dairy Ration Analyzer is available for downloading through the Publication Subscription Services. The price is $699 for a four year subscription. if you are going to need more than ten copies for individuals in your organization please contact us for pricing,

Information on setting up your subscription account is available here: Setting up your account.


  • Microsoft, Excel, and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.


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