S1 Table. Body weight and body composition in the subgroup of sun-exposed and control pigs selected for tissue analysis. Starting weights were taken on same day as first blood sample collected before first sun exposure. Slaughter weights were measured immediately before slaughter. Average daily gain in kg/d was also calculated, covering the entire study period. Weights are presented as means±the standard error. Fat-free lean percentage was calculated as noted in Boggs et al.