OPERAS

Feed ration calculation tool for ruminants in the Sahel

In the frame of the SustainSahel project (Horizon 2020, Grant Agreement No 861974), a Microsoft Excel® tool has been developed to calculate balanced feed rations for sheep, goats, and cattle that are based on tree and shrub foliage, an important dry season feed resource in the Sahel where smallholder mixed livestock systems prevail.

In English: 

  • A brief introduction on how to use the tool can be downloaded here.
  • The tool OPÉRAS Version 3.0 (with minor corrections as of December 9, 2025) can be downloaded here.

In French:

Feedback and questions to the tool are welcome, please contact tropanimals[at]uni-kassel[dot]de or regina.roessler[at]uni-kassel[dot]de