Effects of fresh fermented soybean meal (FSM) on the concentrations of PM10 (a) and PM2.5 (b) in piggery during the experiment
PM10: particulate matter smaller than 10 μm aerodynamic diameters; PM2.5: particulate matter smaller than 2.5 μm aerodynamic diameters. Experimental diets were: dietary inclusion of 100 g/kg fresh FSM in the FSM group, and no fresh FSM in diet as the control. Data are expressed as mean±SEM, n=3