ORWELL — In a barn at the Hall and Breen Farm on Monday morning, two lines of cows jostled for position, eager to enter the single-cow berths where they’d be rewarded with troughs of grain.
On the other side of the berths, Louis Hall and two maintenance workers watched as the robotic arms grasped each cow’s udders, milked, then released. As a cow left the stall, she pushed aside a bar that allowed the next cow to enter.
