The development of dairy heifers from birth to first calving is a critical welfare period that sets the foundation for health, productivity, and quality of life throughout a cow productive life.
The welfare of dairy heifers during development is an investment in both their quality of life and their future health. Early disease events leave permanent marks on development — lung damage from respiratory disease, metabolic disruption from diarrhea — that compromise both welfare and production throughout adult life. Social isolation in individual hutches, once standard practice, is now recognized as causing social deprivation that impairs development and increases stress during later group housing transitions. Progressive approaches combine effective disease prevention with appropriate social development, understanding that the two goals are complementary rather than competing.