Context of the Problem
Footpad dermatitis (FPD) and hock burns (HB) are common animal welfare issues in broilers. Both conditions describe dark lesions on the footpads (FPD) or hocks (HB) of the birds, caused by inflammation and skin necrosis. The main risk factor for both FPD and HB is wet litter; however other factors such as diet, bodyweight and genetics can impact the occurrence and severity of the lesions. These conditions represent a significant animal welfare concern as the lesions are painful and affected birds tend to avoid movement. In extreme cases, behavioural restrictions may occur. Reduced mobility can limit birds’ access to feed and water, leading to production losses. Furthermore, FPD and HB can result in downgrades at the slaughterhouse and may pose a potential food safety risk.
Monitoring and aWISH Project
FPD as well as HB lesions can persist until slaughter, thereby serving as visible indicators of on-farm broiler welfare. At the slaughterhouse, these lesions can be assessed in terms of prevalence and severity using established scoring systems. To facilitate such assessments, an automated monitoring system based on cameras and appropriate algorithms is being developed within the scope of the aWISH project. FPD and HB scores are made accessible to farmers via the project’s data platform. This enables them to monitor trends, identify risk factors, and evaluate the effectiveness of welfare-improving measures over time.
Best Practices
As wet litter is the primary cause of FPD and HB, intervention strategies should focus on effective litter management. Best Practices include replacing litter in high-risk areas (e.g., around water lines) and using materials that are both highly absorbent and capable of releasing moisture easily, thereby helping to keep birds’ feet dry. Lowering stocking densities and providing sufficient perch space can further improve litter conditions. Digestive health also plays a role in litter quality. Consulting a nutritionist, avoiding high salt contents in the feed and improving water access are effective measures to reduce the occurrence and severity of FPD and HB.
Find out more about Best Practices regarding FPD and HB in our Best Practice Guides for Broilers – aWISH.
