The rearing period for dairy heifers — from birth to first calving — shapes lifetime productivity and health. Welfare during this critical period has lasting consequences for both the animal and the farm.
Heifer rearing welfare has received less attention than lactating cow welfare but is equally important. Early-life disease — respiratory infections, scour — causes immediate suffering and has lasting epigenetic effects on immune function. Solitary calf hutches prevent natural social development; pair housing from 3-4 days of life improves learning ability and reduces fear responses at first milking. Gradual weaning systems using decreasing milk allowance rather than abrupt cessation reduce the behavioral distress typical of weaning. Disbudding without pain relief causes acute and prolonged pain that is entirely preventable. Investment in heifer welfare pays forward to better lifetime welfare and productivity.