Current livestock production techniques result in the generation of odors which have become a source of conflict between livestock producers and society. Research to identify the chemical compounds present in odorous air from animal waste degradation has yielded about 45 compounds to date. The amines, mercaptans, organic acids and heterocyclic nitrogen compounds are generally regarded as being of greatest importance. Among the techniques for odor control are: (a) site selection away from populated areas and where adequate drainage exists, (b) maintain the animal areas as dry as possible and prevent the animals from becoming manure covered, (c) select manure handling systems which utilize aerobic environments for manure storage, (d) maintain an orderly operation free of accumulated manure and runoff water, (e) practice prompt disposal of dead animals and (f) use odor control chemicals when short term odor control is necessary, such as when manure storage tank contents must be field spread.

Report prepared by Agricultural Engibneering Department, Oregon State University, Corvallis, Oregon. "Grant no. R802009-01; Program element 1BB039." Includes bibliographical references (pages 101-107).