Results on different experiments are presented: alkaline by products (fly ash and cement kiln) added to manure, pit additives, organic and inorganic floating covers and land application. Livestock and poultry productions have an impact on air quality. However the density level which is not comparable to the one in some areas of several European Countries and the resulting ammonia emissions does not represent a threat to the vegetative growth as seen in Europe. Dust removal from exhaust ventilation air will reduce odor emissions. Regulations on odorous emissions from livestock production should focus on source reduction issues.

The information presented in this proceeding doesn’t refer to any previous publication. It is difficult to analyze it as not much is given on protocol and test procedures.