Marcus Hollmann testimonial, nutrition United States Download Marcus Hollmann, nutritionist and consultant for Summit Farms (Wisconsin, USA) about the Nutrition module: “I really like the outstanding graphs. They capture not only the snapshot of the herd today, but also let me view changes over time very quickly, comparing eating and rumination times. CowManager is a tool in our toolbox to respond quickly, finetune the cows’ diet and essentially make the dairy more profitable.”