The cow has an intensive fermentationprocess going on in the stomach. This is the 'Rumen', one of the four digestion compartments of a cow. During the Zuursalon on the 9th of december 2016 Gjalt Jan Feersma Hoekstra will explain this complex process.
![](/image/2016/12/15/rumen_blanket1.jpg%28mediaclass-full-width.c3083fedae46a95f1139ff9d5833b1b6b8e20a69%29.jpg)
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