| Title: | Swine diets impact manure characteristics and gas emissions: Part II sulfur source |
| Author(s): | Trabue SL; Kerr BJ; Scoggin KD; |
| Address: | "USDA-ARS National Laboratory for Agriculture and the Environment, Ames, IA 50011, United States of America. Electronic address: steven.trabue@ars.usda.gov. USDA-ARS National Laboratory for Agriculture and the Environment, Ames, IA 50011, United States of America" |
| DOI: | 10.1016/j.scitotenv.2019.06.272 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "Sulfur is a key nutrient in swine diets and is associated with hydrogen sulfide (H(2)S) emissions, odor, and respiratory distress of animals. Due to potential increases in S levels in swine diets by using alternative feedstuffs, a feeding trial study was conducted to determine the effect of dietary S source has on manure slurry chemical properties and gas emissions. A total of 24 gilts averaging 139?ª+kg BW were fed a control diet formulated with corn and soybean meal (CSBM) containing 1.80?ª+g?ª+S?ª+kg(-1) or diets containing 3.50?ª+g?ª+S?ª+kg(-1) feed as supplied by calcium sulfate (CaSO(4)), distillers dried grains with solubles (DDGS), or feather meal (CFM). Diets were fed for 41 d with an ADFI of 2.70?ª+kg/d. Feces and urine were collected twice daily after each feeding and added to the manure storage containers. At the end of the study, manure slurries were monitored for gas emissions and chemical properties. Dietary S source had a significant effect on excretion of DM, C, N, and S in manure. Pigs fed the diets containing DDGS had significantly higher levels of NH(3), VFAs, and phenols in manure compared to pigs fed the CSBM diet. Pigs fed diets with organic S (i.e., DDGS and CFM) had lower emissions of H(2)S compared to pigs fed the diet with inorganic sulfur (CaSO(4)). In contrast, there were no significant differences in C or N emissions as affected by dietary treatment. Odor and odorant emissions differed by dietary treatment, with pigs fed the CFM diet having the highest odor emissions as compared to pigs fed the control CSBM diet. Pigs fed diets containing CFM and DDGS had a greater percentage of their chemical odor associated with volatile organic compounds while animals fed the CSBM diet or the diet with CaSO(4) had greater percentage associated with H(2)S emissions" |
| Keywords: | Animal Feed Animals Diet/*methods Greenhouse Gases/analysis Sulfur/*analysis Sus scrofa Swine Activity value Emissions Manure Oav Odor Sulfur Swine diet;Animals; |
| Notes: | "MedlineTrabue, S L Kerr, B J Scoggin, K D eng Netherlands 2019/08/31 Sci Total Environ. 2019 Nov 1; 689:1115-1124. doi: 10.1016/j.scitotenv.2019.06.272. Epub 2019 Jun 19" |
