The transition period from late pregnancy to early lactation is the most physiologically stressful phase in a dairy cow life. Welfare during this critical window has lasting effects on health and productivity.
The transition period represents a welfare flashpoint for dairy cows, concentrating multiple risk factors — metabolic strain, immune suppression, physical stress of calving, and immediate separation from their calf — into a narrow window of time. Cows that develop metabolic or infectious diseases suffer measurably, with behavioral indicators including reduced movement, social isolation, and reduced grooming. Preventive management strategies, including appropriate feeding, comfortable housing, and close health monitoring, can dramatically reduce disease incidence and the associated suffering. Improving transition period welfare is one of the highest-impact areas in dairy farm management.