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Full-Text Articles in Biological Engineering
Development Of Standard Methods To Estimate Manure Production And Nutrient Characteristics From Dairy Cattle, T. Nennich, J. H. Harrison, D. Meyer, W. P. Weiss, A. J. Heinrichs, R. L. Kincaid, W. J. Powers, Richard K. Koelsch, P. E. Wright
Development Of Standard Methods To Estimate Manure Production And Nutrient Characteristics From Dairy Cattle, T. Nennich, J. H. Harrison, D. Meyer, W. P. Weiss, A. J. Heinrichs, R. L. Kincaid, W. J. Powers, Richard K. Koelsch, P. E. Wright
Department of Biological Systems Engineering: Conference Presentations and White Papers
Total collection data from many universities were pooled for statistical analyses to evaluate existing data from dairy animals and determine if one or more modifications were needed for Standard Table D384.1. Many of these studies were carried out to evaluate nutritional characteristics associated with different diets. The data collected were sufficient to evaluate total manure, total and volatile solids, and N excretion values. Some experiments had sufficient number of samples analyzed to evaluate P, K, Ca, Mg, Na, Cl, S, and micro-elements. Statistical analyses were conducted to determine if a single column value was appropriate and define the regression equations …
Proposed Beef Cattle Manure Excretion And Characteristics Standard For Asae, Galen E. Erickson, B. Auvermann, R. A. Eigenberg, L. W. Greene, Terry J. Klopfenstein, Richard K. Koelsch
Proposed Beef Cattle Manure Excretion And Characteristics Standard For Asae, Galen E. Erickson, B. Auvermann, R. A. Eigenberg, L. W. Greene, Terry J. Klopfenstein, Richard K. Koelsch
Department of Biological Systems Engineering: Conference Presentations and White Papers
A committee was formed consisting of both animal scientists and agricultural engineers to evaluate and update current ASAE standards. An intake minus retention model was developed to estimate nutrient excretion. This approach allows users (producers, engineers, etc.) to develop site specific information based on known variables such as protein or phosphorus content of diets and cattle performance. This approach illustrates the importance of nutrition on nutrient excretion in livestock operations. Our focus is for feedlot cattle and updates excretion of dry matter (DM or total solids), organic matter (OM or volatile solids), N, P, Ca, K, Na, Mg, S, Cu, …
Use Of Computer Spreadsheets And Paper-Based Workbooks To Teach Comprehensive Nutrient Management Planning, Charles A. Shapiro, R. L. Deloughery, Richard K. Koelsch, M. J. Kucera, Charles S. Wortmann
Use Of Computer Spreadsheets And Paper-Based Workbooks To Teach Comprehensive Nutrient Management Planning, Charles A. Shapiro, R. L. Deloughery, Richard K. Koelsch, M. J. Kucera, Charles S. Wortmann
Department of Biological Systems Engineering: Conference Presentations and White Papers
The objective of this program was to provide producers and ag advisors the skills needed to apply for and maintain the non-engineering components of a Nebraska permit to operate a livestock waste control facility. This includes a Comprehensive Nutrient Management Plan (CNMP). Eighty six producers and advisors participated in an intensive three-session hands-on class with a total of nine contact hours at four sites in eastern Nebraska in the spring of 2002. The workshop included lecture and participant use of spreadsheet tools to assist with performing the necessary calculations. With an average of 68 % responses per session, 58% rated …
Fact Sheet #2: Do I Need A Npdes Permit For My Livestock Or Poultry Operation, Richard K. Koelsch
Fact Sheet #2: Do I Need A Npdes Permit For My Livestock Or Poultry Operation, Richard K. Koelsch
Department of Biological Systems Engineering: Conference Presentations and White Papers
New U.S. Environmental Protection Agency (EPA) rules that took effect April 14, 2003 indicate that animal feeding operations (AFOs) can be defined as concentrated animal feeding operations (CAFOs) and required to obtain a National Pollutant Discharge Elimination System (NPDES) permit from the EPA or a designated state permitting authority. The likelihood of an AFO being classified as a CAFO will depend, in large part, on whether that operation is considered to be large, medium, or small.
Local Applications Of The National Livestock And Poultry Environmental Stewardship Curriculum, Diane Huntrods, Richard K. Koelsch, Frank Humenik
Local Applications Of The National Livestock And Poultry Environmental Stewardship Curriculum, Diane Huntrods, Richard K. Koelsch, Frank Humenik
Department of Biological Systems Engineering: Conference Presentations and White Papers
This paper introduces the LPES curriculum project, summarizing the curriculum development process, the final curriculum materials, and the outreach activities. Following an overview of the LPES Curriculum Impact Survey, the authors will present representative examples of uses and modifications made of the LPES curriculum as it is used with targeted audiences. This model for utilizing national expertise to address state and local educational needs may have benefit in other extension education programs as land grant university resources decrease. The paper concludes with a discussion of lessons learned from this national extension education curriculum development effort.
The Economic Impacts Of Various Public-Policy Scenarios For Methane Recovery On Dairy Farms, Richard Stowell, Chris G. Henry
The Economic Impacts Of Various Public-Policy Scenarios For Methane Recovery On Dairy Farms, Richard Stowell, Chris G. Henry
Department of Biological Systems Engineering: Conference Presentations and White Papers
The feasibility of anaerobic digesters for dairy and swine operations in Nebraska was evaluated using EPA’s Ag Star software program Farmworks 2.0 (1997) and local values for farm energy costs, mainly electricity. Four incentive programs were considered that would subsidize anaerobic digestion. Installation of a digester system is a significant investment that is currently very difficult to justify economically to Nebraska producers based upon consideration of readily quantifiable income and expenses, regardless of farm size. Larger dairy operations looking to invest in this technology would benefit most from a tax credit and/or subsidized electricity sales, policies that relate directly to …
Application And Performance Of Constructed Wetlands For Runoff From Small Open Lots, C. G. Henry, J. P. Harner Iii, T. D. Strahm, M. A. Reynolds
Application And Performance Of Constructed Wetlands For Runoff From Small Open Lots, C. G. Henry, J. P. Harner Iii, T. D. Strahm, M. A. Reynolds
Department of Biological Systems Engineering: Conference Presentations and White Papers
Vegetative systems have long been studied and evaluated as alternatives to conventional storage, treatment, and land application systems. This paper discusses the application of vegetative systems, primarily constructed wetlands, as a runoff treatment technology for small livestock operations. The approach used for two small dairies and one beef cattle feedlot is discussed. Cost data for these operations is included as well as nutrient reduction performance results from a three year sampling period for the KS Dairy.