Abstract
Reducing odor emissions from swine farms to avoid complaints about odor nuisance is a major issue. Ozonationhas been used to reduce odor in swine buildings, but little research exists on its benefits. A swine-finishing building wasdivided into two identical rooms and two treatments, ozonation and the control, were applied in a cross-over design. Thetreatments were switched between rooms every three weeks. The overall experimental period was 12 weeks, during whichthere were four trials. Pig growth performance, dust mass and size concentration, odor intensity, total sulfur compounds,hydrogen sulfide concentration, ammonia concentration, and total heterotrophic bacterial counts were measured andanalyzed during the test period. Sulfur-containing compounds detected included dimethyldisulfide, dimethylsulfide(methanethiol), and dimethyltrisulfide. Ozone application to a swine building at the maximum safe concentration of 0.1 ppmdid not have any statistically significant effects on dust mass concentration, odor concentration and emission rate, sulfurcompound concentrations, and bacteria counts. However, it did increase ammonia concentration and decrease pig averagedaily gain. The ozonation effects on hydrogen sulfide concentration could not be evaluated by the gas tube method used duringthis study.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
