Manipulation of swine diets to reduce ammonia and harmful gaseous emissions from manure

L. W. Turner, R. S. Gates, G. L. Cromwell, W. A. Dozier, N. S. Ferguson, J. L. Taraba

Research output: Contribution to journalConference articlepeer-review


The use of diet manipulation promises to be a useful tool for reduction of ammonia (NH3) emission and concentration levels in growing/finishing swine buildings. A laboratory study was conducted to evaluate emission of NH3, H2S, CH4 and CO2 from a manure pit as affected by feeding of amino acid-supplemented diets versus conventional diets of various crude protein levels to growing/finishing pigs. The results from the first experiment in the series suggest that the emission of ammonia is greater for a high protein diet (16% CP), and lowest for the supplemented diet at a 10% CP level. Mean ammonia levels measured varied from 11.8-19.5 ppm, depending upon time of sample over the experimental period and dietary treatment. The 16% CP diet had 26.3% higher mean NH3 concentration as compared to the reduced protein (10% CP) mean concentration. Further experiments are planned as a part of this project to assess the effects of additives on gaseous from swine manure.

Original languageEnglish (US)
JournalPaper - American Society of Agricultural Engineers
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1997 ASAE Annual International Meeting. Part 1 (of 3) - Minneapolis, MN, USA
Duration: Aug 10 1997Aug 14 1997

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)


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