Poluentes aéreos na produção de suínos.

Abstract

Substantial evidence shows that some physical, chemical and biological agents have a negative effect on health and productivity of animals and the workers. The study was carried out at commercial swine production facilities at growing and finishing with the objectives to evaluate NH3, dust and fungi concentrations and estimate the occupational risk exposition the workers. The evaluation was made as suggested by NR15, NIOSH and ACGIH norms. The results indicated significant differences at 5% probability in the average concentration of NH3 with regard to feeding schedule, typology and periods available. Total dust concentrations were lower for finishing units (0.84-3.34mg.m-3) than for growing units (0.84-9.16mg.m-3). The respirable dust concentrations were higher than for growing units, and less than 3.67mg.m-3. These concentrations were lower than the limits recommended for workers. The most prevalent molds found were Aspergillus, followed by Penicillium and Neurospora. In the Aspergillus genus it was found the following species A. niger, A. parasiticus, A. candidus, A. flavus, A. nidulans.