Benchmarks based on milking system Compared to the overall mean for pipeline herds… de novo Mixed Preformed Milking parlour +0.01 +0.01 -0.01 Robot -0.02 -0.02 -0.02 The Box Plot Graphic… Last updated : December 10, 2020 50 % of herds Data from 2,621 Quebec Holstein herds for December 2019 (194 Milking parlor herds, 2,144 Pipeline herds and 283 Robot herds).