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Iowa State University

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Leopold Center Completed Grant Reports

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Enhancing Botanical Composition, Wildlife Habitat And Carbon Sequestration Of Pastures In South Central Iowa Through Soil Disturbance By Mob Grazing Of Beef Cattle, James R. Russell, Harris J. Sellers, Stephen Barnhart, Daniel G. Morrical, Helga Offenburger Jan 2015

Enhancing Botanical Composition, Wildlife Habitat And Carbon Sequestration Of Pastures In South Central Iowa Through Soil Disturbance By Mob Grazing Of Beef Cattle, James R. Russell, Harris J. Sellers, Stephen Barnhart, Daniel G. Morrical, Helga Offenburger

Leopold Center Completed Grant Reports

As Iowa pastures continue to be dominated by cool-season grass species, strategic integration of a single mob-grazing event into pasture management offers a tool to simultaneously increase productivity of pastures and to improve grassland wildlife habitat through increased biodiversity. However, the success of the maneuver depends on climate, soil and landscape.


Use Of Mob Grazing To Improve Cattle Production, Enhance Legume Establishment And Increase Carbon Sequestration In Iowa Pastures, James R. Russell, Stephen K. Barnhart, Daniel G. Morrical, Harris J. Sellers Jan 2013

Use Of Mob Grazing To Improve Cattle Production, Enhance Legume Establishment And Increase Carbon Sequestration In Iowa Pastures, James R. Russell, Stephen K. Barnhart, Daniel G. Morrical, Harris J. Sellers

Leopold Center Completed Grant Reports

Mob grazing is a variation on rotational grazing that has been proposed to have promise as one of the tactics graziers can use to improve cattle performance and environmental quality. This project looked at whether and how mob grazing could benefit livestock and producer management of their pastures and soil resources.


Site Specific Implementation Of Practices That Alter The Spatial/Temporal Distribution Of Grazing Cattle To Improve Water Quality Of Pasture Streams In The Rathbun Lake Watershed, James R. Russell Jan 2012

Site Specific Implementation Of Practices That Alter The Spatial/Temporal Distribution Of Grazing Cattle To Improve Water Quality Of Pasture Streams In The Rathbun Lake Watershed, James R. Russell

Leopold Center Completed Grant Reports

This study examined how pasture size and composition can affect cattle distribution in and around streams, and influence the risk of pollutants stemming from cattle congregating in a small area.


Energy Use And Nutrient Cycling In Pig Production Systems, Mark S. Honeyman, Peter J. Lammers Jan 2011

Energy Use And Nutrient Cycling In Pig Production Systems, Mark S. Honeyman, Peter J. Lammers

Leopold Center Completed Grant Reports

Researchers explored all aspects of energy use in hog production from the perspective of two systems currently in use in Iowa—conventional confinement systems and bedded hoop barns.


Distillers Dried Grains (Ddg) Feeding And Impacts On Meat Quality For Grazing Steers, Mark S. Honeyman, Daniel G. Morrical Jan 2011

Distillers Dried Grains (Ddg) Feeding And Impacts On Meat Quality For Grazing Steers, Mark S. Honeyman, Daniel G. Morrical

Leopold Center Completed Grant Reports

This study suggests that pasture-reared cattle, when given access to soyhull/DDG self-fed by-products, exhibit excellent responses on both live performance and carcass traits, including CLA fatty acid levels.


A Study Of The Factors That Influence Consumer Attitudes Towards Beef Products Using The Conjoint Market Analysis Tool, Brian E. Mennecke, Anthony M. Townsend, Dermot J. Hayes, Steven M. Lonergan Jan 2009

A Study Of The Factors That Influence Consumer Attitudes Towards Beef Products Using The Conjoint Market Analysis Tool, Brian E. Mennecke, Anthony M. Townsend, Dermot J. Hayes, Steven M. Lonergan

Leopold Center Completed Grant Reports

Beef producers looking for a competitive edge in today's markets need information about the qualities that consumers consider most important. Using conjoint marketing analysis allowed the investigators to sort out the most relevant characteristics for meat purchasers.


Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz Jan 2009

Quantifying The Role Of Riparian Management To Control Non-Point Source Pollution Of Pasture And Cropland Streams, James R. Russell, Daniel G. Morrical, John Kovar, Daryl R. Strohbehn, John D. Lawrence, Mathew M. Haan, Shelly Lee Nellesen, Thomas M. Isenhart, Richard Schultz

Leopold Center Completed Grant Reports

Grazing management practices have the potential to mitigate some problems with sediment and phosphorus loading in pasture streams. The project demonstrated possible strategies to lessen grazing impacts on streams.


Impacts Of Managed Grazing On Stream Ecology And Water Quality, James R. Russell Jan 2006

Impacts Of Managed Grazing On Stream Ecology And Water Quality, James R. Russell

Leopold Center Completed Grant Reports

The project measures and analyzes the varying effects different grazing systems have on the nutrients that appear in surface runoff.


Complementary Grazing Systems For Beef Cattle Production, Kenneth J. Moore, Roger L. Hintz, Mary H. Wiedenhoeft, E. Charles Brummer, Stephen K. Barnhart, James R. Russell Jan 2004

Complementary Grazing Systems For Beef Cattle Production, Kenneth J. Moore, Roger L. Hintz, Mary H. Wiedenhoeft, E. Charles Brummer, Stephen K. Barnhart, James R. Russell

Leopold Center Completed Grant Reports

Pasture productivity in Iowa often is limited by the low yield of cool-season grasses in the summer. This project considers whether uneven seasonal distribution in pastures could be improved by including species that perform better under higher temperatures.


Winter Grazing Of Corn Residues: Effects On Soil Properties And Subsequent Crop Yields From A Corn-Soybean Crop Rotation, W. Darrell Busby, James R. Russell, Douglas L. Karlen, L. James Secor, Brian Peterson, Carroll Olson, Shawn C. Shouse, Dallas L. Maxwell Jan 2004

Winter Grazing Of Corn Residues: Effects On Soil Properties And Subsequent Crop Yields From A Corn-Soybean Crop Rotation, W. Darrell Busby, James R. Russell, Douglas L. Karlen, L. James Secor, Brian Peterson, Carroll Olson, Shawn C. Shouse, Dallas L. Maxwell

Leopold Center Completed Grant Reports

Corn residues could be a good resource for winter cattle grazing. The study investigates whether winter grazing causes soil compaction and yield reduction in crops that are planted following grazing.


Dairy Manure Quantification And Characterization In Grazing Systems, Wendy J. Powers, Marjorie A. Faust Jan 2001

Dairy Manure Quantification And Characterization In Grazing Systems, Wendy J. Powers, Marjorie A. Faust

Leopold Center Completed Grant Reports

Information is needed on the amount and nutrient concentrations of manure generated by lactating dairy cows that are managed in an intensive grazing system. Currently the most frequently cited data sources for these are 20-year old ASAE tables. These data are important because manure nutrient figures are used to determine the maximum animal stocking density that will safeguard against nutrient runoff or degradation of water quality by concentrated nutrients.


Botanicals As Part Of An Integrated Value-Added Pork Production System, Palmer J. Holden, James D. Mckean Jan 2001

Botanicals As Part Of An Integrated Value-Added Pork Production System, Palmer J. Holden, James D. Mckean

Leopold Center Completed Grant Reports

Some herbs are known to exhibit natural antimicrobial activity and other characteristics that could be useful in value-added animal production. Four botanical products were tested for possible inclusion in swine feeds as alternatives to synthetic chemotherapeutic and antimicrobial agents.


Determination Of Early Summer Pasture Conditions To Optimize Forage And Calf Productivity And Profitability, James R. Russell, Ann M. Cowen, Daryl R. Strohbehn, Daniel G. Morrical, Stephen K. Barnhart, Kenneth J. Moore, W. Darrell Busby, H. Joe Sellers, Russell L. Bredahl, Byron M. Leu, Roger P. Brummett Jan 2000

Determination Of Early Summer Pasture Conditions To Optimize Forage And Calf Productivity And Profitability, James R. Russell, Ann M. Cowen, Daryl R. Strohbehn, Daniel G. Morrical, Stephen K. Barnhart, Kenneth J. Moore, W. Darrell Busby, H. Joe Sellers, Russell L. Bredahl, Byron M. Leu, Roger P. Brummett

Leopold Center Completed Grant Reports

Forages can be valuable elements in a sustainable production system. The date when animals are first allowed to graze on pastures can impact the quality and amount of forages available. This study explored various factors that influence successful grazing.


Coupling Swine Technologies: Swine System Options, Mark S. Honeyman Jan 2000

Coupling Swine Technologies: Swine System Options, Mark S. Honeyman

Leopold Center Completed Grant Reports

Three major alternative swine production systems were researched and demonstrated at Iowa State University research farms: hoop structures at Allee Farm near Newell and Rhodes Farm near Rhodes, outdoor farrowing at the Western Farm near Castana, and a deep-bedded Swedish system at the Armstrong Farm near Lewis.


Evaluation Of The Nitrogen And Energy Utilization Of Legume Forages By Growing Cattle And Sheep, James R. Russell, Mohammadreza Ghaffarzadeh Jan 1999

Evaluation Of The Nitrogen And Energy Utilization Of Legume Forages By Growing Cattle And Sheep, James R. Russell, Mohammadreza Ghaffarzadeh

Leopold Center Completed Grant Reports

Forages can help maintain or enhance environmental quality by preventing soil erosion and increasing soil nitrogen so that less nitrogen fertilizer is needed. However, because the protein in most legume forages is highly degraded in the rumen of cattle or sheep, utilization of forage protein may be inefficient. This research project looked at the possibilities for using berseem clover and kura clover to increase feed efficiency of growing animals and lactating dairy cows.


Botanicals As Part Of An Integral Value-Added Pork Production System, Eric Franzenburg, Palmer J. Holden, James D. Mckean, Gary D. Osweiler Jan 1999

Botanicals As Part Of An Integral Value-Added Pork Production System, Eric Franzenburg, Palmer J. Holden, James D. Mckean, Gary D. Osweiler

Leopold Center Completed Grant Reports

Selected herbs are known to naturally possess antibacterial and other characteristics that could be useful in animal protein production. Inclusion of these herbs in animal feeds as alternative growth promotion and efficiency stimulants may be able to address some of the current concerns about the possibility of significant antibiotic-resistant bacteria development that stems from drugs currently used at subtherapeutic levels in animal production. Several herbs were tested for their ability to aid animal growth rates and feed efficiency without giving rise to antibiotic-resistant microbes.


Demonstration Of An Annual Forage Crop Integrated With Crop And Livestock Enterprises, Richard M. Cruse, Mark S. Honeyman, Mohammad Ghaffarzadeh Jan 1998

Demonstration Of An Annual Forage Crop Integrated With Crop And Livestock Enterprises, Richard M. Cruse, Mark S. Honeyman, Mohammad Ghaffarzadeh

Leopold Center Completed Grant Reports

Using a more diverse cropping system, such as strip intercropping, to produce forages for feeding livestock can create a more sustainable, environmentally friendly farming system. Strip intercropping of corn, soybeans, and oats underseeded with berseem clover was used to demonstrate agronomic and environmental benefits of a more varied cropping system. This system produces oat/ berseem clover soilage (green-chop) that can be utilized to feed beef cattle.


Production Of A Videotape Series To Promote Forage-Based Livestock Production In The Upper Midwest, James R. Russell, Daniel G. Morrical, Stephen K. Barnhart, Kenneth J. Moore, Ann M. Cowen, Robert Dayton Jan 1996

Production Of A Videotape Series To Promote Forage-Based Livestock Production In The Upper Midwest, James R. Russell, Daniel G. Morrical, Stephen K. Barnhart, Kenneth J. Moore, Ann M. Cowen, Robert Dayton

Leopold Center Completed Grant Reports

Although properly managed grazing can increase farm income and enhance environmental quality, it has not been widely used in the Upper Midwest. Instead, grazing has been viewed as an adjunct to row crop production, and state-of-the-art management techniques have been adopted slowly. However, recent research has developed forage grazing systems that can compete economically with row crops, especially on more erodible land. In order to implement such systems successfully, producers need practical information on the technical aspects of grazing and pasture management. Most grazing videos produced prior to this project were tailored to other geographic regions or weren't sufficiently ...


Low-Input Sustainable Sow Housing For Iowa, Mark S. Honeyman, Steven J. Hoff, James Mckean, Dwaine S. Bundy, Emmett Stevermer Jan 1996

Low-Input Sustainable Sow Housing For Iowa, Mark S. Honeyman, Steven J. Hoff, James Mckean, Dwaine S. Bundy, Emmett Stevermer

Leopold Center Completed Grant Reports

This project developed a low-cost, innovative sow housing and feeding system that is currently under consideration for a patent. A quasi ad libitum (free feeding of a controlled diet) electronic feeding system for gestating sows was housed in a 9.1 X 18.3 meter steel-hooped structure covered with an aluminized plastic tarp. A feeder served as a partition between high-energy and low-energy diet feeding areas. After weighing, hogs were directed to the appropriate diet by means of a tag number read by a computer. Such farm size-neutral housing can help producers raise lean market pigs. Other advantages include improved ...


Integrating Sustainable Concepts With The Isu Beef Feedlot Performance Projects Program, Daniel D. Loy, Doyle Wilson, Philip L. Spike Jan 1996

Integrating Sustainable Concepts With The Isu Beef Feedlot Performance Projects Program, Daniel D. Loy, Doyle Wilson, Philip L. Spike

Leopold Center Completed Grant Reports

Farmer-feeders who feed homegrown crops to feeder cattle as a marketing alternative for these crops must evaluate the impact of their cropping patterns and feeding on the whole farm operation. This project developed a tool for beef cattle producers to make more conscientious decisions


High-Intensity, Year-Round Rotational Grazing, James R. Russell Jan 1995

High-Intensity, Year-Round Rotational Grazing, James R. Russell

Leopold Center Completed Grant Reports

Compared to row crops, most forage crops reduce water runoff, therefore limiting soil erosion. Forage systems also require less chemical pest control than row crops. Because legume forage species fix nitrogen in the soil, they seldom require nitrogen fertilization. Despite these advantages, profitability limitations have kept forage use from expanding.


Optimal Efficiency In The Use Of Iowa's Energy, Soil, And Feed Resources For Beef Production, James R. Russell, Allen H. Trenkle, Daryl R. Strohbehn, Walter F. Wedin, Stephen K. Barnhart, Arne Hallam, Mark S. Honeyman Jan 1992

Optimal Efficiency In The Use Of Iowa's Energy, Soil, And Feed Resources For Beef Production, James R. Russell, Allen H. Trenkle, Daryl R. Strohbehn, Walter F. Wedin, Stephen K. Barnhart, Arne Hallam, Mark S. Honeyman

Leopold Center Completed Grant Reports

Soil erodes over six times faster from cultivated Iowa cropland than from pastureland, even though almost 12 percent more of the pastureland acres are classified as highly erodible than the cropland acres. Because of serious concern about excessive erosion of Iowa's topsoil, profitable alternatives to row-crop production are needed for soils like those found in much of southern Iowa.