Mindy J Spiehs

Research Animal Scientist

Dr. Mindy Spiehs is a Research Animal Scientist evaluating effects of diet, housing, livestock bedding material, and other management factors on odor and greenhouse gass emissions from livestock waste and housing facilities.

 

Feeding practices that influence the excretion of starch, crude protein, and sulfur by cattle may significantly affect the production of odor from cattle feedlots.  Diet may also influence the concentration of environmentally active form(s) of phosphorus in livestock waste.  Dr. Spiehs has a particular interest in the environmental implications of using ethanol by-products in cattle feedlot diets.  Many ethanol by-products are high in nitrogen and sulfur which may increase ammonia, hydrogen sulfide, and odorous compounds emitted from livestock facilities.  Current projects are evaluating alternative feed ingredients that can be added to a by-product-based diet to improve air quality.

 

The environmental impact of livestock feeding operations is also influenced by management of the facilities.  Dr. Spiehs has on-going research projects to evaluate air quality in cattle deep-bedded confinement facilities.  Other projects evaluate air quality when various bedding materials are used in deep-bedded systems.

 

• Projects

  Sustainable Management of Manure Nutrients and Environmental Contaminants from Beef and Swine Production Facilities In-House Appropriated (D)   Accession Number:440922

  Greenhouse Gas and Ammonia Emissions from Beef Feedyard and Compost in the Upper Great Plains USMARC Clay Center, Nebraska Interagency Reimbursable Agreement (I)   Accession Number:446139

• Publications

  • (Clicking on the reprint icon will take you to the publication reprint.)
  • Photophysical properties of porphyrins and their applications to polariton chemistry -(Literature Review)
    Avramenko, A.G., Spiehs, M.J. 2024. Photophysical properties of porphyrins and their applications to polariton chemistry. Issues of Chemistry and Chemical Technology. 3:5-15. http://doi.org/10.32434/0321-4095-2024-154-3-5-15.
    
  • Pilot-scale H2S and swine odor removal system using commercially available biochar-(Database / Dataset)
    
    
  • Ammonia and greenhouse gas emissions from beef feedlot surface material treated with aluminum sulfate (alum) or microbial amendments -(Peer Reviewed Journal)
    Spiehs, M.J., Woodbury, B.L. 2023. Ammonia and greenhouse gas emissions from beef feedlot surface material treated with aluminum sulfate (alum) or microbial amendments. Journal of Environmental Quality. 53(1):1-11. https://doi.org/10.1002/jeq2.20533.
    
  • Chemical and physical properties of organic bedding materials -(Peer Reviewed Journal)
    Spiehs, M.J., Woodbury, B.L., Brown-Brandl, T.M. 2023. Chemical and physical properties of organic bedding materials. Applied Engineering in Agriculture. 39(6):595-604. https://doi.org/10.13031/aea.15673.
    
  • Safe and sustainable use of bio-based fertilizers in agricultural production systems -(Book / Chapter)
    Leytem, A.B., Dungan, R.S., Spiehs, M.J., Miller, D.N. 2024. Safe and sustainable use of bio-based fertilizers in agricultural production systems. In: Amon, B., editor. Developing Circular Agriculture Production Systems. 1st edition. Cambridge, UK: Burleigh Dodds Science Publishing. p. 179-214. https://doi.org/10.19103/AS.2023.0120.16.
    
  • Using aluminum sulfate or microbial feedlot surface amendments to reduce odor and gas emissions-(Proceedings)
    
    
  • Porphyrin mediated photodegradation of tylosin in aqueous media by near-UV light -(Peer Reviewed Journal)
    Avramenko, A.G., Spiehs, M.J. 2023. Porphyrin mediated photodegradation of tylosin in aqueous media by near-UV light. Photochemistry and Photobiology, A: Chemistry. 441. Article 114698. https://doi.org/10.1016/j.jphotochem.2023.114698.
    
  • Opportunities sought to cut feedlot emissions-(Popular Publication)
    Spiehs, M.J. 2023. Opportunities sought to cut feedlot emissions. Journal of Nutrient Management. February:8-9.
    
  • Removal of tylosin from aqueous media via octaethylporphyrin photocatalyst -(Proceedings)
    Avramenko, A.G., Spiehs, M.J. 2022. Removal of tylosin from aqueous media via octaethylporphyrin photocatalyst. In: Proceedings of Frontiers in Optics + Laser Science Conference, October 16-22, 2022, Rochester, New York. Paper No. JTu4A.1.
    
  • Microbial community structure from southern high plains beef cattle feedyard manure and relationship with nitrous oxide emissions -(Peer Reviewed Journal)
    Waldrip, H., Parker, D., Miller, S., Durso, L.M., Miller, D.N., Casey, K., Woodbury, B.L., Spiehs, M.J. 2022. Microbial community structure from southern high plains beef cattle feedyard manure and relationship with nitrous oxide emissions. Agrosystems, Geosciences & Environment. 5(3). Article e20292. https://doi.org/10.1002/agg2.20292.
    
  • Effects of solvent environment on the spectroscopic properties of tylosin, an experimental and theoretical approach -(Peer Reviewed Journal)
    Avramenko, A.G., Spiehs, M.J. 2023. Effects of solvent environment on the spectroscopic properties of tylosin, an experimental and theoretical approach. Water Science and Technology. 87(11):2597-2606. https://doi.org/10.2166/wst.2023.155.
    
  • Emission of ammonia, hydrogen sulfide, and greenhouse gases following application of aluminum sulfate to beef feedlot surfaces-(Proceedings)
    Spiehs, M.J., Woodbury, B.L. 2022. Emission of ammonia, hydrogen sulfide, and greenhouse gases following application of aluminum sulfate to beef feedlot surfaces. In: Proceedings of Waste to Worth Conference, April 18-22, 2022, Oregon, Ohio.
    
  • Emission spectra of octaethylporphyrin dissolved in liquid toluene and a tripropylene glycol diacrylate polymer matrix-(Proceedings)
    
    
  • Effect of using aluminum sulfate (alum) as a surface amendment in beef cattle feedlots on ammonia and sulfide emissions -(Peer Reviewed Journal)
    Spiehs, M.J., Woodbury, B.L. 2022. Effect of using aluminum sulfate (alum) as a surface amendment in beef cattle feedlots on ammonia and sulfide emissions. Sustainability. 14(4). Article 1984. https://doi.org/10.3390/su14041984.
    
  • Pilot-scale H2S and swine odor removal system using commercially available biochar -(Peer Reviewed Journal)
    Ro, K.S., Woodbury, B.L., Spiehs, M.J., Szogi, A.A., Silva, P.J., Hwang, O., Cho, S. 2021. Pilot-scale H2S and swine odor removal system using commercially available biochar. Agronomy [MDPI]. 11(8). Article 1611. https://doi.org/10.3390/agronomy11081611.
    
  • Temporal and spatial variability of methane emissions from Texas open-lot beef cattle feedyard pens -(Peer Reviewed Journal)
    Parker, D.B., Casey, K.D., Waldrip, H., Min, B., Woodbury, B.L., Spiehs, M.J., Campbell, T.N., Meyer, B.E., Willis, W.M. 2022. Temporal and spatial variability of methane emissions from Texas open-lot beef cattle feedyard pens. Transactions of the ASABE. 64(6):1781-1794. https://doi.org/10.13031/trans.14672.
    
  • Use of bedding materials in beef bedded manure packs in hot and cool ambient temperatures: Effects on ammonia, hydrogen sulfide, and greenhouse gas emissions -(Peer Reviewed Journal)
    Jaderborg, J.P., Spiehs, M.J., Woodbury, B.L., DiCostanzo, A., Parker, D.B. 2021. Use of bedding materials in beef bedded manure packs in hot and cool ambient temperatures: Effects on ammonia, hydrogen sulfide, and greenhouse gas emissions. Transactions of the ASABE. 64(4):1197-1209. https://doi.org/10.13031/trans.14291.
    
  • Use of bedding materials in beef bedded manure packs at hot and cold ambient temperatures: Effects on odorous volatile organic compounds and odor activity values -(Peer Reviewed Journal)
    Jaderborg, J.P., Spiehs, M.J., Woodbury, B.L., DiCostanzo, A., Parker, D.B. 2021. Use of bedding materials in beef bedded manure packs at hot and cold ambient temperatures: Effects on odorous volatile organic compounds and odor activity values. Transactions of the ASABE. 64(3):843-855. https://doi.org/10.13031/trans.14299.
    
  • Environmental conditions and gas concentrations in deep-pit finishing cattle facilities: A descriptive study -(Peer Reviewed Journal)
    Cortus, E. L., Hetchler, B. P., Spiehs, M.J., Rusche, W. C. 2021. Environmental conditions and gas concentrations in deep-pit finishing cattle facilities: A descriptive study. Transactions of the ASABE. 64(1):31-48. https://doi.org/10.13031/trans.14040.
    
  • Ammonia and greenhouse gas emissions from land application of solid beef manure and urea to corn fields in south central Nebraska -(Proceedings)
    Spiehs, M.J., Cortus, E.L., Rahman, S., Sarker, N., Niraula, S., Mehata, M., Chatterjee, A., Parker, D.B. 2020. Ammonia and greenhouse gas emissions from land application of solid beef manure and urea to corn fields in south central Nebraska. In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), July 12-15, 2020, Omaha, Nebraska. ASABE Paper No. 2000192. p. 1-10. https://doi.org/10.13031/aim.202000192.
    
  • Toward modeling of nitrous oxide emissions following precipitation, urine and feces deposition on beef cattle feedyard surfaces -(Peer Reviewed Journal)
    Parker, D.B., Casey, K.D., Hales, K., Waldrip, H., Min, B., Cortus, E., Woodbury, B.L., Spiehs, M.J., Meyer, B.E., Willis, W.M. 2020. Toward modeling of nitrous oxide emissions following precipitation, urine and feces deposition on beef cattle feedyard surfaces. Transactions of the ASABE. 63(5):1371-1384. https://doi.org/10.13031/trans.13847.
    
  • Deep pit beef cattle barn ammonia and carbon dioxide concentrations -(Proceedings)
    Cortus, E., Hetchler, B., Spiehs, M.J., Rusche, W. 2020. Deep pit beef cattle barn ammonia and carbon dioxide concentrations. In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), July 12-15, 2020, Omaha, Nebraska. ASABE Paper No. 2000840. p. 1-11. https://doi.org//10.13031/aim.202000840.
    
  • An environmental assessment of cattle manure systems in the northern great plains-(Proceedings)
    
    
  • Ammonia, hydrogen sulfide, and greenhouse gas emissions from lab-scaled manure bedpacks with and without aluminum sulfate additions -(Peer Reviewed Journal)
    Spiehs, M.J., Woodbury, B.L., Parker, D.B. 2019. Ammonia, hydrogen sulfide, and greenhouse gas emissions from lab-scaled manure bedpacks with and without aluminum sulfate additions. Environments. 6:108. https://doi.org/10.3390/environments6100108.
    
  • Cropland amendment with beef cattle manure minimally affects antimicrobial resistance -(Peer Reviewed Journal)
    Miller, E., Spiehs, M., Arthur, T.M., Woodbury, B., Cortus, E., Chatterjee, A., Rahman, S., Schmidt, J.W. 2019. Cropland amendment with beef cattle manure minimally affects antimicrobial resistance. Journal of Environmental Quality. 48:1683-1693. https://doi.org/10.2134/jeq2019.02.0042.
    
  • Aerial nitrogen fluxes and soil nitrate in response to fall-applied manure and fertilizer applications in eastern South Dakota -(Peer Reviewed Journal)
    Mehata, M., Cortus, E., Niraula, S., Spiehs, M.J., Darrington, J., Chatterjee, A., Rahman, S., Parker, D.B. 2019. Aerial nitrogen fluxes and soil nitrate in response to fall-applied manure and fertilizer applications in eastern South Dakota. International Journal of Agronomy. 2019:8572985. https://doi.org/10.1155/2019/8572985.
    
  • Nitrous oxide emissions from an open-lot beef cattle feedyard in Texas -(Peer Reviewed Journal)
    Parker, D.B., Casey, K.D., Waldrip, H.M., Min, B.R., Woodbury, B.L., Spiehs, M.J., Willis, W. 2019. Nitrous oxide emissions from an open-lot beef cattle feedyard in Texas. Transactions of the ASABE. 62(5):1173-1183. https://doi.org/10.13031/trans.13396.
    
  • Empirical model of annual nitrous oxide emissions from open-lot beef cattle feedyard pens (Version 2)-(Proceedings)
    Parker, D.B., Casey, K.D., Cortus, E.L., Min, B., Waldrip, H., Woodbury, B.L., Spiehs, M.J. 2019. Empirical model of annual nitrous oxide emissions from open-lot beef cattle feedyard pens (Version 2). In: Proceedings of the 2019 ASABE Annual International Meeting, July 5-7, 2019, Boston, Massachusetts. Paper No. 1900299. p. 1-18.
    
  • Seasonal and spatial variations in aerial ammonia concentrations in deep pit beef cattle barns-(Proceedings)
    Cortus, E., Hetchler, B., Spiehs, M.J., Rusche, W. 2019. Seasonal and spatial variations in aerial ammonia concentrations in deep pit beef cattle barns. In: Proceedings of Waste to Worth Conference, April 22-26, 2019, Minneapolis, Minnesota. Available: https://lpelc.org/seasonal-and-spatial-variations-in-aerial-ammonia-concentrations-in-deep-pit-beef-cattle-barns/
    
  • Production of greenhouse gases, ammonia, hydrogen sulfide, and odorous volatile organic compounds from manure of beef feedlot cattle implanted with anabolic steroids-(Proceedings)
    Spiehs, M.J., Woodbury, B.L., Hales, K.E. 2019. Production of greenhouse gases, ammonia, hydrogen sulfide, and odorous volatile organic compounds from manure of beef feedlot cattle implanted with anabolic steroids. In: Proceedings of Waste to Worth Conference, April 22-26, 2019, Minneapolis, Minnesota. Available: https://lpelc.org/production-of-greenhouse-gases-ammonia-hydrogen-sulfide-and-odorous-volatile-organic-compounds-from-manure-of-beef-feedlot-cattle-implanted-with-anabolic-steroids/
    
  • Production of greenhouse gases and odorous compounds from manure of beef feedlot cattle fed diets with and without ionophores-(Proceedings)
    Spiehs, M.J., Woodbury, B.L., Hales, K.E. 2019. Production of greenhouse gases and odorous compounds from manure of beef feedlot cattle fed diets with and without ionophores. In: Proceedings of Waste to Worth Conference, April 22-26, 2019, Minneapolis, Minnesota. Available: https://lpelc.org/production-of-greenhouse-gases-and-odorous-compounds-from-manure-of-beef-feedlot-cattle-fed-diets-with-and-without-ionophores/
    
  • Beef manure and urea applied to corn show variable effects on nitrous oxide, methane, carbon dioxide, and ammonia -(Peer Reviewed Journal)
    Niraula, S., Rahman, S., Chatterjee, A., Cortus, E.L., Mehata, M., Spiehs, M.J. 2019. Beef manure and urea applied to corn show variable effects on nitrous oxide, methane, carbon dioxide, and ammonia. Agronomy Journal. 111(3):1448-1467. https://doi.org/10.2134/agronj2018.08.0547.
    
  • Efficacy of different biochars in removing odorous volatile organic compounds (VOCs) emitted from swine manure -(Peer Reviewed Journal)
    Hwang, O., Lee, S.R., Cho, S.B., Ro, K.S., Spiehs, M.J., Woodbury, B.L., Silva, P.J., Han, D.W., Choi, H.C., Kim, K.Y., Jung, M. 2018. Efficacy of different biochars in removing odorous volatile organic compounds (VOCs) emitted from swine manure. ACS Sustainable Chemistry & Engineering. https://doi.org/10.1021/acssuschemeng.8b02881.
    
  • Diurnal measurements of methane emissions from a feedyard pen surface in Texas during Spring-(Abstract Only)
    
    
  • Use of aluminum sulfate (alum) to reduce ammonia emissions from cattle bedded manure packs -(Proceedings)
    Spiehs, M.J. 2018. Use of aluminum sulfate (alum) to reduce ammonia emissions from cattle bedded manure packs. Proceedings of the 10th International Livestock Environment Symposium (ILES X), September 25-27, 2018, Omaha, NE. Paper No. ILES 18-078. https://doi.org/10.13031/iles.18-078.
    
  • Use of aluminum sulfate (alum) as a feedlot surface amendment to reduce ammonia emissions from beef feedlots -(Proceedings)
    Spiehs, M.J., Woodbury, B.L. 2018. Use of aluminum sulfate (alum) as a feedlot surface amendment to reduce ammonia emissions from beef feedlots. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), July 29-August 1, 2018, Detroit, MI. ASABE Paper No. 1801541. https://doi.org/10.13031/aim.201801541.
    
  • How do temperature and rainfall affect nitrous oxide emissions from open-lot beef cattle feedyard pens? -(Peer Reviewed Journal)
    Parker, D.B., Waldrip, H., Casey, K.D., Woodbury, B.L., Spiehs, M.J., Webb, K., Willis, W.M. 2018. How do temperature and rainfall affect nitrous oxide emissions from open-lot beef cattle feedyard pens? Transactions of the ASABE. 61(3): 1049-1061. doi:10.13031/trans.12788.
    
  • Effect of corn processing and wet distiller’s grains with solubles on odorous volatile organic compound emissions from urine and feces of beef cattle -(Peer Reviewed Journal)
    Spiehs, M.J., Jaderborg, J.P., Hales, K.E., DiCostanzo, A., Crawford, G.I., Parker, D.B. 2018. Effect of corn processing and wet distiller’s grains with solubles on odorous volatile organic compound emissions from urine and feces of beef cattle. Applied Engineering in Agriculture. 34(3):591-598. https://doi.org/10.13031/aea.12708.
    
  • Lab-scale model to evaluate odor and gas concentrations emitted by deep bedded pack manure -(Peer Reviewed Journal)
    Spiehs, M.J. 2018. Lab-scale model to evaluate odor and gas concentrations emitted by deep bedded pack manure. Journal of Visualized Experiments. 137:e57332. https://doi.org/10.3791/57332.
    
  • Evaluation of aluminum sulfate (alum) as a feedlot surface amendment to reduce ammonia, hydrogen sulfide, and greenhouse gas emissions from beef feedlots-(Abstract Only)
    Duncan, Z., Spiehs, M.J. 2018. Evaluation of aluminum sulfate (alum) as a feedlot surface amendment to reduce ammonia, hydrogen sulfide, and greenhouse gas emissions from beef feedlots [abstract]. Journal of Animal Science. 96(Supplement 2):251-252.
    
  • Antibiotic resistance genes and residual antimicrobials in cattle feedlot surface soil-(Abstract Only)
    
    
  • Effect of calcium hydroxide application to feedlot pen surface material on ammonia, odor, and greenhouse gas emissions-(Proceedings)
    Spiehs, M.J., Woodbury, B.L., Berry, E.D., Wells, J. 2017. Effect of calcium hydroxide application to feedlot pen surface material on ammonia, odor, and greenhouse gas emissions. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE), July 16-19, 2017, Spokane, Washington. ASABE Paper No. 1700385. doi:10.13031/aim.201700385.
    
  • Antibiotic resistance genes and residual antimicrobials in cattle feedlot surface soil-(Abstract Only)
    Bright, D., Miller, D.N., Durso, L.M., Spiehs, M.J., Woodbury, B.L., Snow, D., O'Connor, G. 2017. Antibiotic resistance genes and residual antimicrobials in cattle feedlot surface soil [abstract]. 4th International Symposium on the Environmental Dimension of Antibiotic Resistance. Paper No. 82.
    
  • Odorous volatile organic compounds, Escherichia coli, and nutrient concentrations when kiln-dried pine chips and corn stover bedding are used in beef bedded manure packs -(Peer Reviewed Journal)
    Spiehs, M.J., Berry, E.D., Wells, J., Parker, D.B., Brown-Brandl, T.M. 2017. Odorous volatile organic compounds, Escherichia coli, and nutrient concentrations when kiln-dried pine chips and corn stover bedding are used in beef bedded manure packs. Journal of Environmental Quality. 46(4):722-732. https://doi.org/10.2134/jeq2016.09.0333.
    
  • Use of aluminum sulfate (alum) to decrease ammonia emissions from beef cattle bedded manure packs-(Proceedings)
    Spiehs, M.J., Woodbury, B.L. 2017. Use of aluminum sulfate (alum) to decrease ammonia emissions from beef cattle bedded manure packs. In: Proceedings of Waste to Worth Conference, April 18-21, 2017, Raleigh, North Carolina. Available: https://articles.extension.org/pages/74410/use-of-aluminum-sulfate-alum-to-decrease-ammonia-emissions-from-beef-cattle-bedded-manure-packs
    
  • Effect of calcium hydroxide application to cattle feedlot pens on Escherichia coli O157:H7 and total E. coli in pen surface manure-(Abstract Only)
    Berry, E.D., Wells, J., Arthur, T.M., Schmidt, J.W., Spiehs, M.J., Woodbury, B.L. 2016. Effect of calcium hydroxide application to cattle feedlot pens on Escherichia coli O157:H7 and total E. coli in pen surface manure [Abstract]. Journal of Food Protection. Supp. A(79):P2-122.
    
  • Surface application of soybean peroxidase and calcium peroxide for reducing odorous VOC emissions from swine manure slurry-(Peer Reviewed Journal)
    Parker, D.B., Hayes, M., Brown-Brandl, T.M., Woodbury, B.L., Spiehs, M.J., Koziel, J.A. 2016. Surface application of soybean peroxidase and calcium peroxide for reducing odorous VOC emissions from swine manure slurry. Applied Engineering in Agriculture. 32(4):389-398.
    
  • Distillers by-product cattle diets enhance reduced sulfur gas fluxes from feedlot soils and manures -(Peer Reviewed Journal)
    Miller, D.N., Spiehs, M.J., Varel, V.H., Woodbury, B.L., Wells, J., Berry, E.D. 2016. Distillers by-product cattle diets enhance reduced sulfur gas fluxes from feedlot soils and manures. Journal of Environmental Quality. 45:1161-1168.
    
  • Ammonia, total reduced sulfides, and greenhouse gases of pine chip and corn stover bedding packs-(Peer Reviewed Journal)
    Spiehs, M.J., Brown-Brandl, T.M., Parker, D.B., Miller, D.N., Berry, E.D., Wells, J.E. 2016. Ammonia, total reduced sulfides, and greenhouse gases of pine chip and corn stover bedding packs. Journal of Environmental Quality. 45:630-637.
    
  • Effects of dry-rolled or high-moisture corn with twenty-five or forty-five percent wet distillers' grains with solubles on energy metabolism, nutrient digestibility, and macromineral balance in finishing beef steers -(Peer Reviewed Journal)
    Hales, K.E., Jaderborg, J.P., Crawford, G.I., DiCostanzo, A., Spiehs, M.J., Brown-Brandl, T.M., Freetly, H.C. 2015. Effects of dry-rolled or high-moisture corn with twenty-five or forty-five percent wet distillers' grains with solubles on energy metabolism, nutrient digestibility, and macromineral balance in finishing beef steers. Journal of Animal Science. 93(10):4995-5005. doi: 10.2527/jas2015-9301
    
  • Use of zilpaterol hydrochloride to reduce odor and gas production from the feedlot surface when beef cattle are fed diets with or without ethanol byproducts-(Proceedings)
    Spiehs, M.J., Hales, K.E., Woodbury, B.L. 2015. Use of zilpaterol hydrochloride to reduce odor and gas production from the feedlot surfaces when beef cattle are fed diets with or without ethanol byproducts. In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). July 26-29, 2015, New orleans, LA. Paper No. 152146893.
    
  • Nitrification and denitrification activity in simulated beef cattle bedded manure packs-(Proceedings)
    Ayadi, F.Y., Cortus, E.L., Spiehs, M.J., Miller, D.N. 2015. Nitrification and denitrification activity in simulated beef cattle bedded manure packs. In: Proceedings of the 2015 ASABE Intersectional Meeting, North Central Region. St. Joseph, Michigan:ASABE, April 10-11, 2015, Fargo, ND. Paper Number: RRV15-056.
    
  • Physical, chemical and biological properties of simulated beef cattle bedded manure packs-(Peer Reviewed Journal)
    Ayadi, F.Y., Spiehs, M.J., Cortus, E.L., Miller, D.N., Djira, G.D. 2015. Physical, chemical and biological properties of simulated beef cattle bedded manure packs. Transactions of the ASABE. 58(3):797-811.
    
  • Ammonia and greenhouse gas concentrations at surfaces of simulated beef cattle bedded manure packs-(Peer Reviewed Journal)
    Ayadi, F.Y., Cortus, E.L., Spiehs, M.J., Miller, D.N., Djira, G. 2015. Ammonia and greenhouse gas concentrations at surfaces of simulated beef cattle bedded manure packs. Transactions of the ASABE. 58(3):783-795.
    
  • Use of zilpaterol hydrochloride to reduce odors and gas production from the feedlot surface when beef cattle are fed diets with or without ethanol byproducts-(Proceedings)
    Spiehs, M.J., Hales, K.E. 2015. Use of zilpaterol hydrochloride to reduce odors and gas production from the feedlot surface when beef cattle are fed diets with or without ethanol byproducts. In: Proceedings Waste to Worth:Spreading Science and Solutions, March 31-April 3, 2015, Seattle, WA. Available: http://articles.extension.org/pages/72870.
    
  • Modeling water movement in beef cattle bedded manure pack-(Proceedings)
    Cortus, E.L., Ayadi, F.Y., Spiehs, M.J. 2015. Modeling water movement in beef cattle bedded manure pack. In: Proceedings Waste to Worth:Spreading Science and Solutions, March 31-April 3, 2015, Seattle, WA. Available: http://articles.extension.org/pages/72730.
    
  • Site, environmental and airflow characteristics for mono-slope beef cattle facilities in the Northern Great Plains-(Peer Reviewed Journal)
    Cortus, E.L., Al Mamun, M.R.H., Spiehs, M.J., Ayadi, F.Y., Doran, B.E., Kohl, K.D., Pohl, S., Cortus, S.D., Stowell, R., Nicolai, R. 2015. Site, environmental and airflow characteristics for mono-slope beef cattle facilities in the Northern Great Plains. Transactions of the American Society of Agricultural and Biological Engineers (ASABE). 58(1):123-135.
    
  • Particulate matter concentrations for mono-slope beef cattle facilities in the Northern Great Plains -(Peer Reviewed Journal)
    Spiehs, M.J., Cortus, E.L., Holt, G.A., Kohl, K.D., Doran, B.E., Ayadi, F.Y., Cortus, S.D., Al Mamun, M.R., Pohl, S., Nicolai, R., Stowell, R., Parker, D.B. 2015. Particulate matter concentrations for mono-slope beef cattle facilities in the Northern Great Plains. Transactions of the ASABE. 57(6):1831-1837.
    
  • Ammonia and hydrogen sulfide concentration and emission patterns for mono-slope beef cattle facilities in the Northern Great Plains-(Proceedings)
    Cortus, E.L., Spiehs, M.J., Doran, B.E., Al Mamun, M.R.H., Ayadi, F.Y., Cortus, S.D., Kohl, K., Pohl, S., Stowell, R., Nicolai, R. 2014. Ammonia and hydrogen sulfide concentration and emission patterns for mono-slope beef cattle facilities in the Northern Great Plains. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual International Meeting. July 13-16, 2014, Montreal, Quebec Canada. ASABE Paper No. 141897896.
    
  • Particulate matter concentrations for mono-slope beef cattle facilities in the Northern Great Plains-(Proceedings)
    Spiehs, M.J., Cortus, E.L., Holt, G.A., Kohl, K.D., Doran, B.E., Ayadi, F.Y., Cortus, S.D., Al Mamun, M.R., Pohl, S., Nicolai, R., Stowell, R., Parker, D.B. 2014. Particulate matter concentrations for mono-slope beef cattle facilities in the Northern Great Plains. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual International Meeting, July 13-16, 2014, Montreal, Quebec Canada. ASABE Paper No. 141903510.
    
  • Air quality in bedded mono-slope beef barns-(Other)
    Doran, B., Kohl, K., Rieck-Hinz, A., Cortus, E., Spiehs, M.J. 2013. Air quality in bedded mono-slope beef barns. Iowa State University Extension Fact Sheet. PM 3062, November, 2013.
    
  • Results of the air emission research study-(Proceedings)
    Cortus, E.L., Spiehs, M.J. 2013. Results of the air emission research study. Proceedings of the Beef Facility Conference, November 21, 2013, Sioux Falls, SD. Iowa State University AEP 1022. p. 5-9. Online available. https://store.extension.iastate.edu/Product/Beef-Facilities-Conference-Proceedings.
    
  • Persistence of erythromycin resistance gene erm(B) in cattle feedlot pens over time -(Peer Reviewed Journal)
    Mantz, A.R., Miller, D.N., Spiehs, M.J., Woodbury, B.L., Durso, L.M. 2013. Persistence of erythromycin resistance gene erm(B) in cattle feedlot pens over time. Agriculture, Food and Analytical Bacteriology. 3(4):312-320.
    
  • Water holding capacity and evaporative loss from organic bedding materials used in livestock facilities-(Proceedings)
    Spiehs, M.J., Brown-Brandl, T.M., Jaderborg, J.P., DiCostanzo, A., Purswell, J.L., Davis, J.D. 2013. Water holding capacity and evaporative loss from organic bedding materials used in livestock facilities. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual International Meeting, July 21-24, 2013, Kansas City, MO. ASABE Paper No. 131595738.
    
  • Use of wood-based materials in beef bedded manure packs: 1. Effect on ammonia, total reduced sulfide, and greenhouse gas concentrations-(Peer Reviewed Journal)
    Spiehs, M.J., Brown-Brandl, T.M., Parker, D.B., Miller, D.N., Jaderborg, J.P., DiCostanzo, A., Berry, E.D., Wells, J.E. 2014. Use of wood-based materials in beef bedded manure packs: 1. Effect on ammonia, total reduced sulfide, and greenhouse gas concentrations. Journal of Environmental Quality. Special Section. Livestock GraceNet. 43:1187-1194. DOI: 10.2134/JEQ2013.05.0164.
    
  • Use of wood-based materials in beef bedded manure packs: 2. Effect on odorous volatile organic compounds, odor activity value, Escherichia coli, and nutrient concentrations-(Peer Reviewed Journal)
    Spiehs, M.J., Brown-Brandl, T.M., Berry, E.D., Wells, J.E., Parker, D.B., Miller, D.N., Jaderborg, J.P., DiCostanzo, A. 2014. Use of wood-based materials in beef bedded manure packs: 2. Effect on odorous volatile organic compounds, odor activity value, Escherichia coli, and nutrient concentrations. Journal of Environmental Quality. Special Section. Livestock GraceNet. 43:1195-1206. DOI: 10.2134/JEQ2013.05.0165.
    
  • Emission of volatile organic compounds as affected by feedlot location, moisture, and temperature-(Proceedings)
    Woodbury, B.L., Gilley, J.E., Eigenberg, R.A., Spiehs, M.J. 2013. Emission of volatile organic compounds as affected by feedlot location, moisture, and temperature. In: Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). Kansas City, MO, July 21-24, 2013. Paper No. 131619684. (doi: http://dx.doi.org/10.13031/aim.20131619684).
    
  • Spatial mapping of antibiotic resistance-(Abstract Only)
    Mantz, A.R., Miller, D.N., Spiehs, M.J., Woodbury, B.L., Durso, L.M. 2013. Spatial Mapping of Antibiotic Resistance [abstract]. ASA-CSSA-SSSA Annual Meeting, November 3-6, 2013, Tampa, Florida. CD-ROM. 1104.
    
  • Effects of corn processing method and dietary inclusion of corn wet distillers grains with solubles (WDGS) on nutrient metabolism and enteric gas production in finishing steers-(Abstract Only)
    Jaderborg, J.P., Crawford, G.I., DiCostanzo, A., Spiehs, M.J., Hales, K.E. 2013. Effects of corn processing method and dietary inclusion of corn wet distillers grains with solubles (WDGS) on nutrient metabolism and enteric gas production in finishing steers [Abstract]. In: Proceeding of Plains Nutrition Council Spring Conference, April 18-19, 2013, San Antonio, Texas. p. 135.
    
  • Effect of pond ash on pen surface properties-(Peer Reviewed Journal)
    Woodbury, B.L., Eigenberg, R.A., Parker, D.B., Spiehs, M.J. 2013. Effect of pond ash on pen surface properties. Transactions of the ASABE. 56(2):769-775.
    
  • Effect of feeding distiller’s grains on reduced sulfur emissions-(Proceedings)
    Miller, D.N., Spiehs, M.J., Woodbury, B.L. 2013. Effect of feeding distiller’s grains on reduced sulfur emissions. In: Waste to Worth: Spreading Science and Solutions, April 1-5, 2013, Denver, Colorado. Available: http://www.extension.org/pages/67657/effect-of-feeding-distillers-grains-on-reduced-sulfur-emissions.
    
  • Ammonia and greenhouse gas surface concentration measurements from beef bedded manure packs-(Proceedings)
    Ayadi, F.Y., Spiehs, M.J., Cortus, E.L., Miller, D.N. 2013. Ammonia and greenhouse gas surface concentration measurements from beef bedded manure packs. In: Waste to Worth: Spreading Science and Solutions, April 1-5, 2013, Denver, Colorado. Available: http://www.extension.org/pages/67570/ammonia-and greenhouse-gas-surface-concentration-measurements-from-beef-bedded-manure-packs.
    
  • Manure management and temperature impacts on gas concentrations in monoslope cattle facilities-(Proceedings)
    Cortus, E.L., Al Mamun, M., Ayadi, F.Y., Spiehs, M.J., Pohl, S., Doran, B.E., Kohl, K.D., Cortus, S., Nicolai, R. 2013. Manure management and temperature impacts on gas concentrations in monoslope cattle facilities. In: Waste to Worth: Spreading Science and Solutions, April 1-5, 2013, Denver, Colorado. Available: http://www.extension.org/pages/67587/manure-management-and-temperature-impacts-on-gas-concentrations-in-monoslope-cattle-facilities.
    
  • Particulate matter adjacent to cattle deep-bedded monoslope facilities-(Proceedings)
    Spiehs, M.J., Holt, G.A., Kohl, K.D., Doran, B.E., Parker, D.B., Cortus, E. 2013. Particulate matter adjacent to cattle deep-bedded monoslope facilities. In: Waste to Worth: Spreading Science and Solutions, April 1-5, 2013, Denver, Colorado. Available: http://www.extension.org/pages/67704/particulate-matter-adjacent-to-cattle-deep-bedded-monoslope-facilities.
    
  • Effects of corn processing method and dietary inclusion of corn wet distillers grains with solubles (WDGS) on nutrient metabolism and enteric gas production in finishing steers-(Abstract Only)
    Jaderborg, J., Crawford, G.I., DiCostanzo, A., Spiehs, M.J., Hales, K.E. 2013. Effects of corn processing method and dietary inclusion of corn wet distillers grains with solubles (WDGS) on nutrient metabolism and enteric gas production in finishing steers [Abstract]. Journal of Animal Science. 91(Suppl. 2):53. Abstract #0154.
    
  • Effect of bedding materials on concentration of odorous compounds and Escherichia coli in beef cattle bedded manure packs-(Peer Reviewed Journal)
    Spiehs, M.J., Brown Brandl, T.M., Parker, D.B., Miller, D.N., Berry, E.D., Wells, J.E. 2013. Effect of bedding materials on concentration of odorous compounds and Escherichia coli in beef cattle bedded manure packs. Journal of Environmental Quality. 42(1):65-75.
    
  • Reducing odorous VOC emissions from swine manure using soybean peroxidase and peroxides-(Peer Reviewed Journal)
    Parker, D.B., Cai, L., Kim, K., Hales, K.E., Spiehs, M.J., Woodbury, B.L., Atkin, A.L., Nickerson, K.W., Patefield, K.D. 2012. Reducing odorous VOC emissions from swine manure using soybean peroxidase and peroxides. Bioresource Technology. 124:95-104.
    
  • Effect of bedding material on air quality of bedded manure packs in livestock facilities-(Proceedings)
    Spiehs, M.J., Brown-Brandl, T.M., Miller, D.N., Parker, D.B. 2012. Effect of bedding material on air quality of bedded manure packs in livestock facilities. Proceedings of the American Society of Agricultural and Biological Engineers (ASABE) Annual International Meeting, July 29 - August 1, 2012, Dallas, Texas. Paper No. 12-1337890.
    
  • Monitoring air quality in beef mono-slope barns-(Other)
    Cortus, E., Spiehs, M.J. 2012. Monitoring air quality in beef mono-slope barns. Science Behind Environmental Policy Field Day, June 22, 2012. Handout.
    
  • Standardization of flux chamber and wind tunnel flux measurements for quantifying volatile organic compound and ammonia emissions from area sources at animal feeding operations-(Peer Reviewed Journal)
    Parker, D.B., Ham, J., Woodbury, B.L., Cai, L., Spiehs, M.J., Rhoades, M., Trabue, S.L., Casey, K., Todd, R.W., Cole, N.A. 2013. Standardization of flux chamber and wind tunnel flux measurements for quantifying volatile organic compound and ammonia emissions from area sources at animal feeding operations. Atmospheric Environment. 66:72-83.
    
  • Effect of feeding wet distillers grains with solubles to beef cattle on air and manure quality-(Peer Reviewed Journal)
    Spiehs, M.J., Miller, D.N., Woodbury, B.L., Eigenberg, R.A., Varel, V.H., Parker, D.B. 2012. Effect of feeding wet distillers grains with solubles to beef cattle on air and manure quality. Applied Engineering in Agriculture. 28(3):423-430.
    
  • Odor and gas emissions and nutrient excretion from pigs fed diets containing dried distillers grains with solubles-(Peer Reviewed Journal)
    Spiehs, M.J., Whitney, M.H., Shurson, G.C., Nicolai, R.E., Renteria-Flores, J., Parker, D.B. 2012. Odor and gas emissions and nutrient excretion from pigs fed diets containing dried distillers grains with solubles. Applied Engineering in Agriculture. 28(3):431-437.
    
  • Effect of bedding material on air quality of bedded manure packs in livestock facilities-(Abstract Only)
    Abatti, S., Spiehs, M.J., Brown-Brandl, T.M., Miller, D.N., Parker, D.B. 2012. Effect of bedding material on air quality of bedded manure packs in livestock facilities. Midwestern Section of the American Society of Animal Science. 90 (Supplement 2):129 (Abstract 334P).
    
  • Energy and nutrient recovery from cattle feedlots-(Peer Reviewed Journal)
    Eigenberg, R.A., Woodbury, B.L., Auvermann, B., Parker, D.B., Spiehs, M.J. 2012. Energy and nutrient recovery from cattle feedlots. Scholarly Research Exchange. 2012:1-5.
    
  • Standardization of flux chambers and wind tunnels for area source emission measurements at animal feeding operations-(Abstract Only)
    Parker, D.B., Ham, J., Woodbury, B.L., Cai, L., Spiehs, M.J., Trabue, S.L., Casey, K., Todd, R.W., Cole, N.A. 2011. Standardization of flux chambers and wind tunnels for area source emission measurements [abstract]. In: Proceedings 242nd American Chemical Society National Meeting, Denver, CO; Aug. 28-Sept. 1, 2011. Abstract no. 142.
    
  • Flow characteristics of the dynamic "EPA flux chamber"-(Proceedings)
    Woodbury, B.L., Parker, D.B., Eigenberg, R.A., Spiehs, M.J. 2011. Flow characteristics of the dynamic "EPA flux chamber". In: Proceeding fo the American Society of Agricultural and Biological Engineers (ASABE) Annual International Meeting, August 7-10, 2011, Louisville, Kentucky. Paper No. 1111096.
    
  • Effect of feeding wet distillers grains with solubles (WDGS) to growing-finishing cattle on ammonia concentration in air and manure nutrient composition-(Proceedings)
    Spiehs, M.J., Miller, D.N., Woodbury, B.L., Eigenberg, R.A., Varel, V.H., Parker, D.B. 2011. Effect of feeding wet distillers grains with solubles (WDGS) to growing-finishing cattle on ammonia concentration in air and manure nutrient composition. In: Proceedings of the American Society of Agricultural and Biological Engineers (ASABE) Annual International Meeting, August 7-10, 2011, Louisville, Kentucky. Paper No. 1110941.
    
  • Standardization of flux chamber and wind tunnel flux measurements for quantifying emissions from area sources at animal feeding operations-(Proceedings)
    Parker, D.B., Ham, J., Woodbury, B.L., Cai, L., Spiehs, M.J., Rhoades, M., Trabue, S.L., Todd, R.W., Cole, N.A. 2011. Standardization of flux chamber and wind tunnel flux measurements for quantifying emissions from area sources at animal feeding operations. In: Proceeding of the American Society of Agricultural and Biological Engineers (ASABE) Annual International Meeting, August 7-10, 2011, Louisville, Kentucky. Paper No. 1111166.
    
  • Effect of bedding material on air quality of bedded manure packs in livestock facilities-(Abstract Only)
    Spiehs, M.J., Brown Brandl, T.M., Miller, D.N., Parker, D.B. 2011. Effect of bedding material on air quality of bedded manure packs in livestock facilities [abstract]. In: Proceedings 242nd American Chemical Society National Meeting, Denver, CO; Aug. 28-Sept. 1, 2011. Abstract No. 138.
    
  • Environmental conditions in beef deep-bedded monoslope facilities: a descriptive study-(Peer Reviewed Journal)
    Spiehs, M.J., Woodbury, B.L., Doran, B.E., Eigenberg, R.A., Kohl, K.D., Varel, V.H., Berry, E.D., Wells, J. 2011. Environmental conditions in beef deep-bedded monoslope facilities: a descriptive study. Transactions of the ASABE. 54(2):663-673.
    
  • Environmental conditions in beef deep-bedded mono-slope facilities-(Popular Publication)
    Spiehs, M.J., Woodbury, B.L., Doran, B., Eigenberg, R.A., Kohl, K., Varel, V.H., Berry, E.D., Wells, J. 2010. Environmental conditions in beef deep-bedded mono-slope facilities. Iowa State University Animal Industry Report. Leaflet Number R2582.
    
  • Ammonia emissions from feedlot surface of beef deep-bedded monoslope facilities-(Proceedings)
    Spiehs, M.J., Woodbury, B.L., Doran, B.E., Eigenberg, R.A., Kohl, K.D. 2010. Ammonia emissions from feedlot surface of beef deep-bedded monoslope facilities. In: Proceedings of the American Society of Agricultural and Biological Engineers. International Symposium on Air Quality and Manure Management for Agriculture. September 13-16, 2010, Dallas, Texas. 2010 CDROM.
    
  • Energy and nutrient recovery from cattle feedlots-(Proceedings)
    Eigenberg, R.A., Woodbury, B.L., Parker, D.B., Spiehs, M.J. 2010. Energy and nutrient recovery from cattle feedlots. In: Proceedings of the American Society of Agricultural and Biological Engineers. International Symposium on Air Quality and Waste Management for Agriculture, September 13-16, 2010, Dallas, Texas. 2010 CDROM.
    
  • Coal-ash as a surfacing material for feedlots to improve energy and nutrient value of manure-(Proceedings)
    Woodbury, B.L., Eigenberg, R.A., Spiehs, M.J., Parker, D.B. 2010. Coal-ash as a surfacing material for feedlots to improve energy and nutrient value of manure. 2010. In: Proceedings of the American Society of Agricultural and Biological Engineers. International Symposium on Air Quality and Manure Management for Agriculture, September 13-16, 2010, Dallas, Texas. 2010 CDROM.
    
  • Long term effects of annual additions of animal manure on soil chemical, physical, and biological properties in the Great Plains-(Proceedings)
    Spiehs, M.J., Woodbury, B.L., Tarkalson, D.D., Wienhold, B.J., Eigenberg, R.A. 2010. Long term effects of annual additions of animal manure on soil chemical, physical, and biological properties in the Great Plains. 2010. In: Proceedings of the American Society of Agricultural and Biological Engineers. International Symposium on Air Quality and Manure Management for Agriculture, September 13-16, 2010, Dallas, Texas. 2010 CDROM.
    
  • Enhanced reduced sulfur emission from manures of beef cattle fed distiller's byproducts-(Proceedings)
    Miller, D.N., Varel, V.H., Woodbury, B.L., Spiehs, M.J. 2010. Enhanced reduced sulfur emission from manures of beef cattle fed distiller's byproducts. In: International Symposium on Air Quality and Waste Management for Agriculture Proceedings. Septenber 13-16, 2010, Dallas, Texas. 2010 CDROM: 711P0510cd.
    
  • Soil-crop dynamic depth response determined from TDR of a corn silage field compared to EMI measurements-(Peer Reviewed Journal)
    Woodbury, B.L., Eigenberg, R.A., Nienaber, J.A., Spiehs, M.J. 2010. Soil-crop dynamic depth response determined from TDR of a corn silage field compared to EMI measurements. Journal of Environmental & Engineering Geophysics. 15:185-196.
    
  • Soil conductivity and multiple linear regression for precision monitoring of beef feedlot manure and runoff-(Peer Reviewed Journal)
    Eigenberg, R.A., Woodbury, B.L., Nienaber, J.A., Spiehs, M.J., Parker, D., Varel, V.H. 2010. Soil conductivity and multiple linear regression for precision monitoring of beef feedlot manure and runoff. Journal of Environmental & Engineering Geophysics. 15:175-183.
    
  • Using electromagnetic induction technology to predict volatile fatty acid, source area differences-(Peer Reviewed Journal)
    Woodbury, B.L., Eigenberg, R.A., Varel, V.H., Lesch, S., Spiehs, M.J. 2010. Using electromagnetic induction technology to predict volatile fatty acid, source area differences. Journal of Environmental Quality. 39:1-7.
    
  • Hoops and Mono-Slopes: What We Have Learned About Management and Performance-(Proceedings)
    Doran, B., Euken, R., Spiehs, M.J. 2010. Hoops and Mono-Slopes: What We Have Learned About Management and Performance. In: Feedlot Forum 2010, Iowa Beef Center at Iowa State University, Dec. 8, 2009 and Feb. 11, 2010, Ames, IA. pp. 8-16.
    
  • Remote Sensing Methods for Identifying Potential Emissions from Feedlot Surfaces -(Abstract Only)
    Woodbury, B.L., Eigenberg, R.A., Varel, V.H., Spiehs, M.J. 2009. Remote Sensing Methods for Identifying Potential Emissions from Feedlot Surfaces. [abstract]In: Proceedings of 2009 International Annual Meetings of Agronomy Society of America, Crop Science Society of America, Soil Science Society of America, 1-5 Nov 2009, Pittsburgh, PA. CDROM.
    
  • Nutrient Estimation Using Subsurface Sensing Methods-(Abstract Only)
    Eigenberg, R.A., Woodbury, B.L., Nienaber, J.A., Spiehs, M.J. 2009. Nutrient Estimation Using Subsurface Sensing Methods. [abstract] In: Proceedings 2009 International Annual Meetings of Agronomy Society of America, Crop Science Society of America, Soil Science Society of America, 1-5 Nov 2009, Pittsburg, PA. CDROM.
    
  • Nutrient Excretion and Odorant Production in Manure from Cattle Fed Corn Wet Distillers Grains With Solubles-(Peer Reviewed Journal)
    Spiehs, M.J., Varel, V.H. 2009. Nutrient Excretion and Odorant Production in Manure from Cattle Fed Corn Wet Distillers Grains With Solubles. Journal of Animal Science 87:2977-2984. Online. Journal of Animal Science doi:10.2527/jas.2008-1584.
    
  • Use of Alfalfa for Soil Phosphorus Removal Following Long-Term Manure Application-(Proceedings)
    Eigenberg, R.A., Woodbury, B.L., Ferguson, R., Nienaber, J.A., Spiehs, M.J. 2009. Use of Alfalfa for Soil Phosphorus Removal Following Long-Term Manure Application. In: Proceedings of the American Society of Agricultural & Biological Engineers. June 21-24, 2009. Reno, NV. ASABE Paper No. 96305. St. Joseph, Mich.:ASABE.
    
  • Ammonia Emissions From Feedlot Surface of Beef Deep-Bedded Monoslope Facilities-(Abstract Only)
    Spiehs, M.J., Woodbury, B.L., Eigenberg, R.A., Doran, B.E., Kohl, K.D. 2009. Ammonia Emissions From Feedlot Surface of Beef Deep-Bedded Monoslope Facilities. [abstract] In: Proceedings of 238th American Chemistry Society National Meeting, Aug. 16-20, 2009, Washington, DC. Abstract 62, p. 101.
    
  • Diet Effect on the Type and Spatial Distribution of Odorous Emissions from Beef Cattle-(Abstract Only)
    Woodbury, B.L., Eigenberg, R.A., Varel, V.H., Spiehs, M.J. 2009. Diet Effect on the Type and Spatial Distribution of Odorous Emissions from Beef Cattle. [abstract] In: Proceedings of 238th American Chemistry Society National Meeting, Aug. 16-20, 2009, Washington, DC. Abstract 65, p. 101.
    
  • EMI-Sensor Data to Identify Areas for Potential Emissions of Volatile Fatty Acids from Feedlot Surfaces -(Proceedings)
    Woodbury, B.L., Eigenberg, R.A., Varel, V.H., Spiehs, M.J. 2009. EMI-Sensor Data to Identify Areas for Potential Emissions of Volatile Fatty Acids from Feedlot Surfaces. In: Proceedings of the American Society of Agricultural & Biological Engineers. June 21-24, 2009. Reno, NV. ASABE Paper No. 96161. St. Joseph, Mich.:ASABE.
    
  • Feeding Distiller's Byproducts May Enhance Reduced Sulfur Emissions from Cattle Feedlots-(Abstract Only)
    Miller, D.N., Varel, V.H., Woodbury, B.L., Spiehs, M.J. 2009. Feeding Distiller's Byproducts May Enhance Reduced Sulfur Emissions from Cattle Feedlots. ASA-CSSA-SSSA Annual Meeting, November 1-5, 2009, Pittsburgh, Pennsylvania. 2009 CDROM. Session 151 Poster 1.
    
  • Electromagnetic Induction Sensor Data to Identify Areas of Manure Accumulation on a Feedlot Surface-(Peer Reviewed Journal)
    Woodbury, B.L., Lesch, S.M., Eigenberg, R.A., Miller, D.N., Spiehs, M.J. 2009. Electromagnetic Induction Sensor Data to Identify Areas of Manure Accumulation on a Feedlot Surface. Soil Science Society of America Journal. 73(6):2068-2077.
    
  • The Value of Manure in Feedlot Operations-(Other)
    Spiehs, M.J. 2009. The Value of Manure in Feedlot Operations. University of Minnesota Special Publication. In: Beef Cattle Program Proceedings, Research and Extension Reports, 2009 CDROM.
    
  • EMI-Sensor Data to Identify Areas of Manure Accumulation on a Feedlot Surface-(Proceedings)
    Woodbury, B.L., Lesch, S.M., Eigenberg, R.A., Miller, D.N., Spiehs, M.J. 2009. EMI-Sensor Data to Identify Areas of Manure Accumulation on a Feedlot Surface. In: Proceedings Expanding Horizons for Near-Surface Geophysics. 22nd Symposium on the Application of Geophysics to Engineering and Environmental Problems,Ft. Worth, TX, Mar.29-Apr. 2, 2009, p. 850-861. 2009 CDROM.
    
  • Subsurface Sensing Methods Applied to Vegetative Treatment Areas Used to Manage Cattle Feedlot Runoff-(Proceedings)
    Eigenberg, R.A., Woodbury, B.L., Nienaber, J.A., Spiehs, M.J. 2009. Subsurface Sensing Methods Applied to Vegetative Treatment Areas Used to Manage Cattle Feedlot Runoff. In: Proceedings Expanding Horizons for Near-Surface Geophysics. 22nd Symposium on the Application of Geophysics to Engineering and Environmental Problems, Ft. Worth, TX, Mar. 29-Apr. 2, 2009,p.862-869. 2009 CDROM.
    
  • Odorant production and persistence of Escherichia coli in manure slurries from cattle fed zero, twenty, forty, or sixty percent wet distillers grains with solubles-(Peer Reviewed Journal)
    Varel, V.H., Wells, J., Berry, E.D., Spiehs, M.J., Miller, D.N., Ferrell, C.L., Shackelford, S.D., Koohmaraie, M. 2008. Odorant production and persistence of Escherichia coli in manure slurries from cattle fed zero, twenty, forty, or sixty percent wet distillers grains with solubles. Journal of Animal Science 86:3617-3627.
    
  • Using EMI, Geospatial Statistics and Multi-Linear Regression for Identifying Areas of Manure Accumulation on Feedlot Surfaces-(Abstract Only)
    Woodbury, B.L., Lesch, S.M., Eigenberg, R.A., Miller, D.N., Spiehs, M.J. 2008. Using EMI, Geospatial Statistics and Multi-Linear Regression for Identifying Areas of Manure Accumulation on Feedlot Surfaces. [abstract] In: Proceedings of Joint Annual Meeting of the Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Science Society of America, and Gulf Coast Association of Geological Societies, Oct. 5-9, 2008, Houston, TX. Abstract 9123840, CDROM 2008.
    
  • Odorant production and persistence of generic E. coli in manure slurries from cattle fed 0, 20, 40, and 60% wet distillers grains with solubles (WDGS).-(Abstract Only)
    Varel, V.H., Wells, J., Berry, E.D., Spiehs, M.J., Miller, D.N., Ferrell, C.L., Shackelford, S.D., Koohmaraie, M. 2008. Odorant production and persistence of generic E. coli in manure slurries from cattle fed 0, 20, 40, and 60% wet distillers grains with solubles (WDGS)[abstract]. Journal of Animal Science 86(E-Suppl. 2)/Journal of Dairy Science 91(E-Suppl. 1):325.
    
  • Heat production and efficiency of energy utilization in finishing steers fed diets containing wet distillers grains with solubles (WDGS)-(Abstract Only)
    Spiehs, M.J., Ferrell, C.L., Nienaber, J.A., Brown Brandl, T.M., Shackelford, S.D. 2008. Heat production and efficiency of energy utilization in finishing steers fed diets containing wet distillers grains with solubles (WDGS)[abstract]. Journal of Animal Science 86(E-Suppl. 2)/Journal of Dairy Science 91(E-Suppl. 1):583.
    

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