Poor litter quality is an influential factor in the increased incidence of footpad dermatitis (FPD). Since the
primary cause of FPD is wet and caked litter, it is important to maintain the proper ventilation for moisture
control in the house. FPD may cause an increased incidence of carcass downgrading and should be
monitored to determine if additional litter needs to be added. Figure 49 gives some of the main causes of
poor litter quality.