There are over 7 billion farmed egg-laying hens alive at any given time. These animals are being selectively bred for maximized egg production, with each egg laid requiring a significant amount of dietary input - particularly calcium, phosphorus and vitamin D. The depletion of these dietary minerals and vitamins leads to adverse health and poor welfare for the hens. Our background research indicates that many egg-laying hen feed standards are inadequate resulting in a major source of suffering for the hens via pain from bone fractures and osteoporosis. To solve this issue, the goal of our intervention is to reduce farmed hen suffering by supplementing their feed with calcium, phosphorus and vitamin D.