Previous studies have shown that the sanitary environment can affect the health and growth of pigs. Theobjective of the present study was to evaluate the effect of a chronic inflammation induced by a degradedsanitary environment on the pubertal development of boars and on boar taint. Boars from a commercialcross line were allocated at 139 (±0.1) days of age (D0) and 81.3 (±0.6) kg of live weight either to good(n=61) or poor sanitary conditions (n=54) for 4 weeks. The poor environment was previously soiled by noncontemporary pigs, poorly ventilated, not cleaned during treatment; the good environment benefited fromreinforced hygiene measures. Inflammatory status and pubertal development were evaluated on D0 and D27by measures on blood samples (blood formula, inflammatory proteins; testosterone, estradiol). Every week,boars were weighed, sampled for saliva (estrone, inflammatory protein CRP) and their rectal temperaturewas measured. Fat was collected on D27 by biopsy and at slaughter (116.7±0.4 kg live weight) to measureboar taint compounds (androstenone, skatole, indole). Pigs in the poor environment were dirtier (P<0.001).The treatment had a slight effect on rectal temperature (D7: 38.4±0.04 vs 38.6±0.06 °C, P<0.001; and D14:38.3±0.04 vs 38.6±0.04 °C, P<0.001) and a marked effect on fat skatole (0.037 vs 0.082 μg/g of pure fat)and indole (0.039 vs 0.14 μg/g) with higher values for boars in the poor environment (P<0.0001). Overall,treatment had no clear impact on the inflammatory status, the pubertal development and androstenone of theboars. However, the soiled increased markedly the dirtiness and fat skatole