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Biomedical Engineering and Bioengineering Commons™
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- Department of Biological Systems Engineering: Conference Presentations and White Papers (3)
- Biological Systems Engineering: Papers and Publications (1)
- Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research (1)
- Nebraska Center for Biotechnology: Faculty and Staff Publications (1)
Articles 1 - 6 of 6
Full-Text Articles in Biomedical Engineering and Bioengineering
Metabolomics Of Sorghum Roots During Nitrogen Stress Reveals Compromised Metabolic Capacity For Salicylic Acid Biosynthesis, Amy M. Sheflin, Dawn Chiniquy, Chaohui Yuan, Emily Goren, Indrajit Kumar, Max Braud, Thomas Brutnell, Andrea L. Eveland, Susannah Tringe, Peng Liu, Stephen Kresovich, Ellen Marsh, Daniel P. Schachtman, Jessica E. Prenni
Metabolomics Of Sorghum Roots During Nitrogen Stress Reveals Compromised Metabolic Capacity For Salicylic Acid Biosynthesis, Amy M. Sheflin, Dawn Chiniquy, Chaohui Yuan, Emily Goren, Indrajit Kumar, Max Braud, Thomas Brutnell, Andrea L. Eveland, Susannah Tringe, Peng Liu, Stephen Kresovich, Ellen Marsh, Daniel P. Schachtman, Jessica E. Prenni
Nebraska Center for Biotechnology: Faculty and Staff Publications
Sorghum (Sorghum bicolor [L.] Moench) is the fifth most productive cereal crop worldwide with some hybrids having high biomass yield traits making it promising for sustainable, economical biofuel production. To maximize biofuel feedstock yields, a more complete understanding of metabolic responses to low nitrogen (N) will be useful for incorporation in crop improvement efforts. In this study, 10 diverse sorghum entries (including inbreds and hybrids) were field-grown under low and full N conditions and roots were sampled at two time points for metabolomics and 16S amplicon sequencing. Roots of plants grown under low N showed altered metabolic profiles at …
Nutrient Runoff Following Manure Application, Chance Thayer
Nutrient Runoff Following Manure Application, Chance Thayer
Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research
A field study was completed to measure the effects of varying flow rate on nutrient transport following the application of varying amounts of beef cattle manure to plots containing either no-residue or a wheat residue cover. Beef cattle manure was applied and incorporated into the soil in May 2010 to meet zero, one, two, four or eight year corn phosphorus requirements. Simulated rainfall events were applied in June and July 2010. The presence of a crop residue cover significantly increased the transport of dissolved phosphorus, total phosphorus, NO3-N, NH4-N, and total nitrogen in runoff but decreased …
Economics Of Manure Phosphorus Distribution From Beef Feeding Operations, William F. Kissinger, Raymond E. Massey, Richard K. Koelsch, Galen E. Erickson
Economics Of Manure Phosphorus Distribution From Beef Feeding Operations, William F. Kissinger, Raymond E. Massey, Richard K. Koelsch, Galen E. Erickson
Department of Biological Systems Engineering: Conference Presentations and White Papers
An economic model was developed to evaluate cost and value of manure distribution. Feedlots ranging in size from 2,500 head to 25,000 head one-time capacities were used as case studies to calculate excretion amounts from cattle fed diets with a range of phosphorus. Diet P and subsequent costs of distributing the manure were used to analyze the corresponding costs of manure distribution, in addition to determining the required available land needed to be in compliance with a nutrient management plan based on utilization of manure P by the crops grown.
The model illustrated when animals are fed diets of increasing …
Managing Phosphorus In Beef Feeding Operations, William F. Kissinger, Richard K. Koelsch, Galen E. Erickson, Terry J. Klopfenstein
Managing Phosphorus In Beef Feeding Operations, William F. Kissinger, Richard K. Koelsch, Galen E. Erickson, Terry J. Klopfenstein
Department of Biological Systems Engineering: Conference Presentations and White Papers
A commercial feedlot study was conducted to determine manure nutrient flow in six feedlots representing 6,366 cattle. On average, cattle involved in this summary were yearlings (BW = 353 kg) and gained 183 kg over 123 d. It was calculated that 11.5% of the feed nitrogen and 16.9% of the feed phosphorus was retained by the animal with the remaining nutrients excreted. On average, 25.6 kg of N and 4.1 kg of P (DM basis) were excreted per fed beef animal. On average, 887 kg total manure (solids and water) were removed per finished animal (7.2 kg/animal/d) averaging 73% total …
Integrating Animal Feeding Strategies Into Cnmp Processes: Role Of Updated Asae Standard D384.2, Richard K. Koelsch, W. Powers, A. L. Sutton
Integrating Animal Feeding Strategies Into Cnmp Processes: Role Of Updated Asae Standard D384.2, Richard K. Koelsch, W. Powers, A. L. Sutton
Department of Biological Systems Engineering: Conference Presentations and White Papers
This paper introduces the new ASAE Standard D384.2, Manure Production and Characteristics. This new standard provides an equation-based approach that integrates dry matter and nutrient intake as well as animal performance into the final estimate of total solids, nitrogen, and phosphorus excretion for seven livestock and poultry species. The manure excretion estimates of the new standard are compared with the past ASAE standard as well as other commonly used reference values for three specie groups. Significant differences in excretion are common with the new standard compared to past standards. The paper also details examples of how common industry variations in …
Nutrient Balance On Nebraska Livestock Confinement Systems, Richard K. Koelsch, Gary Lesoing
Nutrient Balance On Nebraska Livestock Confinement Systems, Richard K. Koelsch, Gary Lesoing
Biological Systems Engineering: Papers and Publications
Managing the environmental risk associated with livestock production is a significant challenge. Nitrogen and phosphorus are commonly implicated as the sources of ground and surface water quality problems associated with livestock production. The degree of imbalance between these nutrient inputs and the managed nutrient outputs for a livestock operation defines the magnitude of potential environmental risk and provides insight as to the underlying causes of these challenges. A nitrogen and phosphorus balance was constructed for 33 Nebraska confinement livestock operations. Twenty-five and 17 of these operations experienced significant nitrogen and phosphorus imbalances, respectively (50% more nutrient inputs than outputs). Nutrient …