When fourth-generation dairy farmer Olivia Cahill walks into the rotary, every cow is known by name, number and lineage. That’s because each cow carries more than a century of family breeding behind it. This winter, Olivia and her husband Jared took a bold step, shifting the historic Sherraine Holsteins stud from Ohoka to a larger property at Swannanoa, doubling their herd and creating a platform for the next generation.

Delilah Flavell spent several years dairy farming before making the switch to becoming a vet technician From sneaking out in her pyjamas...