Few self-propelled mixer wagons clock up as many hours as the Strautmann machine owned by Dutch contractor Brouwer-Zijp. The firm offers a full-service feeding package.

The Verti-Mix 2001 SF Double self- propelled feeder belonging to Marco Brouwer and Nils Zijp — the two men behind Brouwer-Zijp — is a common sight on country roads near the village of Middenbeemster to the north of Amsterdam. Starting at 6.30am every day, the feeder ………