Manure Management:Assessing Methods Of Controlling Worker Exposure to Dust, Gas- Swine Research Review

摘要

Astudy assessed the effectiveness of oil sprinkling, low-protein diet, a high level of cleaning and manure pH manipulation in reducing ammonia (NH3) and respirable dust concentration in swine facilities.At Prairie Swine Centre, six grow-finish rooms were used with two control and four experimental rooms, each employing one of the measures being studied. Every three weeks, worker exposure to NH3 and respirable dust was assessed by outfitting three workers with gas monitors and personal dust samplers over a two-day shift. Two workers were assigned to work in the experimental room, while the third worker was assigned in the control rooms. Each worker was assigned a logbook to document their activities during their shift while wearing the personal monitoring gear. Following exposure, rooms were sampled over 24 hours for NH3 levels and over 43 hours for dust concentrations.