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Pilot-Scale Testing Of Renewable Biocatalyst For Swine Manure Treatment And Mitigation Of Odorous Vocs, Ammonia And Hydrogen Sulfide Emissions, Devin L. Maurer, Jacek A. Koziel, Kelsey M. Bruning, David B. Parker 2017 Iowa State University

Pilot-Scale Testing Of Renewable Biocatalyst For Swine Manure Treatment And Mitigation Of Odorous Vocs, Ammonia And Hydrogen Sulfide Emissions, Devin L. Maurer, Jacek A. Koziel, Kelsey M. Bruning, David B. Parker

Agricultural and Biosystems Engineering Publications

Comprehensive control of odors, hydrogen sulfide (H2S), ammonia (NH3), and greenhouse gas (GHG) emissions associated with swine production is a critical need. A pilot-scale experiment was conducted to evaluate surface-applied soybean peroxidase (SBP) and calcium peroxide (CaO2) as a manure additive to mitigate emissions of odorous volatile organic compounds (VOC) including dimethyl disulfide/methanethiol (DMDS/MT), dimethyl trisulfide, n-butyric acid, valeric acid, isovaleric acid, p-cresol, indole, and skatole. The secondary impact on emissions of NH3, H2S, and GHG was also measured. The SBP was tested at four treatments (2.28–45 ...


Normalizing Novelty: Regulating Biotechnological Risk At The U.S. Epa, Les Levidow, Susan Carr 2017 University of New Hampshire

Normalizing Novelty: Regulating Biotechnological Risk At The U.S. Epa, Les Levidow, Susan Carr

RISK: Health, Safety & Environment

Drs. Levidow and Carr examine EPA's regulation of biotechnology in the field of genetically modified organisms.


Price Impacts Associated With The Closing Of Hog Slaughtering Plants, Marvin Hayenga, Ronald Deiter, Cristobal Montoya 2017 Iowa State University

Price Impacts Associated With The Closing Of Hog Slaughtering Plants, Marvin Hayenga, Ronald Deiter, Cristobal Montoya

Ronald Deiter

The impact of closing hog slaughtering plants is examined by comparing relative prices in affected local market areas with prices in distant markets before and after a plant closed. The results suggest that market arbitrage usually has been quite effective, with either temporary or insignificant price effects in six case studies.


Member Awareness Of Dairy Cooperative Services In The North Central Region, Ronald E. Deiter, Roger A. Dahlgran, David M. Passe 2017 Iowa State University

Member Awareness Of Dairy Cooperative Services In The North Central Region, Ronald E. Deiter, Roger A. Dahlgran, David M. Passe

Ronald Deiter

This article reports on member awareness and member evaluation of dairy cooperative services in the North Central Region. Members seem well informed about services provided by only a few cooperatives. Years of cooperative membership, size of a producer's opration, awareness of the service by other members of the cooperative, and member's attitude about the importance of ser- vices are found to have a significant effect on a member's awareness. Contrary to recent allega- tions, members of larger cooperatives are most aware of services. Cooperative service policies seem consistent with member control. Finally it is demonstrated that selective ...


Equine Infectious Anemia, Karl H. Hoopes 2017 Utah State University

Equine Infectious Anemia, Karl H. Hoopes

All Current Publications

This fact sheet gives information on equine infectious anemia, a blood-borne infectious viral disease of horses, donkeys, and mules. It describes transmission, clinical disease, diagnosis and control.


Soil Erosion Risk Factors And The Impacts Of Diversification On Organic Strawberry Farms Along California’S Central Coast, Kay Sterner 2017 Pomona College

Soil Erosion Risk Factors And The Impacts Of Diversification On Organic Strawberry Farms Along California’S Central Coast, Kay Sterner

Pomona Senior Theses

Soil erosion is a major issue that threatens to undermine our current system of agriculture. Due to the fact that this system is in turn the number one cause of erosion, agricultural practices in the United States need to be rethought. This study explores how traditional ideas of erosion risks are related to observed erosion on organic strawberry farms along California’s Central Coast. In addition, diversified farming systems are addressed as a possible solution for the current unsustainability of our farming practices. The data from this research suggest that diversity of crops on farms could be linked to less ...


Caseous Lymphadenitis Management In Goats, C. Kim Chapman, Matthew J. Kennedy 2017 Utah State University

Caseous Lymphadenitis Management In Goats, C. Kim Chapman, Matthew J. Kennedy

All Current Publications

This fact sheet describes Caseous Lymphadenitis, an infectious disease of sheep and goats and gives information on managing the disease.


Southeastern Utah Small-Scale Mixed Vegetable Production Costs And Returns - 2 Acres, 2016, Kynda Curtis, Jacob Rudd 2017 Utah State University

Southeastern Utah Small-Scale Mixed Vegetable Production Costs And Returns - 2 Acres, 2016, Kynda Curtis, Jacob Rudd

All Current Publications

Sample costs and returns to produce mixed vegetables under drip irrigation and sold through direct markets in Southeastern Utah are presented. This publication is intended to be a guide used to make production decisions, determine potential returns and prepare business and marketing plans.


Evaluation Of The Brazilian Agrarian Reform Objective: Agricultural Production Yield Change, Tiffany Kwader Harbour 2017 Walden University

Evaluation Of The Brazilian Agrarian Reform Objective: Agricultural Production Yield Change, Tiffany Kwader Harbour

Walden Dissertations and Doctoral Studies

Brazil has an active agrarian reform policy program, publicly organized by the federal government and publicly administered at the state level by the National Institute for Colonization and Agrarian Reform. The objective of the agrarian reform policy program is to retitle unproductive and underproductive rural lands to increase agricultural production and land use. Previous agrarian reform researchers have examined quantities of land redistributed, rural technology developments, and the impact of social movements on land redistribution, but a knowledge gap remains regarding the correlation of agricultural production yields in rural municipalities before and after policy program participation. The State of Cearà ...


J. C. Penney: The Man, The Store And American Agriculture (Under Contract), David Kruger 2016 University of Wyoming

J. C. Penney: The Man, The Store And American Agriculture (Under Contract), David Kruger

David Delbert Kruger

No abstract provided.


Visual Methods For Collaborative Food System Work, K. Valentine Cadieux, Charles Levkoe, P. Mount, D. Szanto 2016 Hamline University

Visual Methods For Collaborative Food System Work, K. Valentine Cadieux, Charles Levkoe, P. Mount, D. Szanto

K. Valentine Cadieux

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The Value Of Third-Party Certification Of Preconditioning Claims At Iowa Feeder Cattle Auctions, Harun Bulut, John Lawrence 2016 Iowa State University

The Value Of Third-Party Certification Of Preconditioning Claims At Iowa Feeder Cattle Auctions, Harun Bulut, John Lawrence

John Lawrence

After controlling a variety of feeder cattle characteristics and market and sale conditions in Iowa feeder auctions, the price premiums for preconditioning claims (vaccinations and minimum 30 days of weaning) with and without third-party certification (TPC) are estimated as $6.12/cwt and $3.35/cwt, respectively. These premiums differ statistically (p < 0.0001), and their difference exceeds the average participation cost of TPC ($l/cwt). This indicates that TPC is valued in the market to credibly signal preconditioning investment under asymmetric information.


U.S. Consumers’ Valuation Of Quality Attributes In Beef Products, Babatunde O. Abidoye, Harun Bulut, John Lawrence, Brian Mennecke, Anthony M. Townsend 2016 Economic Policy Analysis

U.S. Consumers’ Valuation Of Quality Attributes In Beef Products, Babatunde O. Abidoye, Harun Bulut, John Lawrence, Brian Mennecke, Anthony M. Townsend

John Lawrence

A sample of U.S. consumers were surveyed in a choice based experiment in the Fall of 2005 and Spring 2006 to elicit consumers’ preferences for quality attributes in beef products. Based on the resulting data, a random coefficients logit model is estimated, and consumers’ willingness to pay for these quality attributes in beef products is obtained. The results indicate that consumers have strong valuation for traceability, grass-fed, and U.S. origin attributes in a standard rib-eye steak and are willing to pay a premium for these attributes.


Effects Of Stocking Rate And Corn Gluten Feed Supplementation On Performance Of Young Beef Cows Grazing Winter-Stockpiled Tall Fescue-Red Clover Pasture, R. Driskell, J.R. Russell, Daryl R. Strohbehn, Daniel G. Morrical, Stephen K. Barnhart, John Lawrence 2016 Iowa State University

Effects Of Stocking Rate And Corn Gluten Feed Supplementation On Performance Of Young Beef Cows Grazing Winter-Stockpiled Tall Fescue-Red Clover Pasture, R. Driskell, J.R. Russell, Daryl R. Strohbehn, Daniel G. Morrical, Stephen K. Barnhart, John Lawrence

John Lawrence

A winter grazing experiment was conducted to evaluate the effects of stocking rate and corn gluten feed supplementation on forage mass and composition and the BW and BCS of bred 2-yr-old cows grazing stockpiled forage during winter. Two 12.2-ha blocks containing Fawn, endophyte-free, tall fescue and red clover were each divided into 4 pastures of 2.53 or 3.54 ha. Hay was harvested from the pastures in June and August of 2003 and 2004, and N was applied at 50.5 kg/ha at the initiation of stockpiling in August. On October 22, 2003, and October 20, 2004 ...


Differences In Prices And Price Risk Across Alternative Marketing Arrangements Used In The Fed Cattle Industry, Mary K. Muth, Yanyan Liu, Stephen R. Koontz, John Lawrence 2016 RTI International

Differences In Prices And Price Risk Across Alternative Marketing Arrangements Used In The Fed Cattle Industry, Mary K. Muth, Yanyan Liu, Stephen R. Koontz, John Lawrence

John Lawrence

Information on prices and price risk differences across marketing arrangements aids fed cattle producers in making choices about marketing methods. As part of the congressionally mandated Livestock and Meat Marketing Study, we investigated fed cattle price and price risk differences across marketing arrangements. The analysis uses data representing cattle purchased by 29 large beef packing plants from October 2002 through March 2005. Results indicate that marketing agreements offered the best tradeoff between price level and price risk. Forward contracts had the lowest average yet highly volatile prices. Auction barn prices were higher than other methods but also the most volatile.


Feed Grains And Livestock: Impacts On Meat Supplies And Prices, John Lawrence, James Mintert, John D. Anderson, David P. Anderson 2016 Iowa State University

Feed Grains And Livestock: Impacts On Meat Supplies And Prices, John Lawrence, James Mintert, John D. Anderson, David P. Anderson

John Lawrence

Agriculture in the United States is undergoing a significant change. Grain, oilseed, and land prices have increased significantly, creating a subsequent increase in the income and wealth of many rural Americans—unless you are in animal agriculture. Feed is the largest single cost item for livestock and poultry production, accounting for 60%– 70% of the total cost in most years. Although energy, labor, and other inputs have increased, feed costs have increased anywhere from 40%–60% (depending on the species) in the last two years. As price takers in competitive markets, animal producers cannot simply pass their higher costs on ...


Fundamental Forces Affecting Livestock Producers, John Lawrence, James Mintert 2016 Iowa State University

Fundamental Forces Affecting Livestock Producers, John Lawrence, James Mintert

John Lawrence

In a seminal Harvard Business Review article published in 1979, Michael Porter identified five competitive forces that shape industry competition, all of which feed into rivalry among existing competitors. Porter’s framework has most often been applied to industries producing and marketing differentiated products. Conversely, U.S. livestock and milk production still mostly resembles a commodity market with largely undifferentiated products marketed to a processing sector that, based on the Herfindahl-Herschman Index (HHI)-an industry concentration measure based on market shares that is easily computed and compared across industries- and Department of Justice and Federal Trade Commission definitions, is unconcentrated ...


Elements Of Cattle Feeding Profitability In Midwest Feedlots, John Lawrence, Zhi Wang, Dan Loy 2016 Iowa State University

Elements Of Cattle Feeding Profitability In Midwest Feedlots, John Lawrence, Zhi Wang, Dan Loy

John Lawrence

Conventional wisdom and earlier research have concluded that cattle feeding profitability is more determined by feeder and fed cattle prices than by animal performance. This study examined cross-sectional and time-series data from over 1600 pens of cattle in more than 220 feedlots in the upper Midwest where weather and lot conditions are thought to influence feedlot profitability. In addition to input and output prices and animal performance, other factors found to significantly impact cattle feeding profitability were sex, placement weight, facility design, and to a lesser extent placement season.


Creating A Geographically Linked Collective Brand For High-Quality Beef: A Case Study, Bruce Babcock, Dermot J. Hayes, John Lawrence, Roxanne L. Clemens 2016 Iowa State University

Creating A Geographically Linked Collective Brand For High-Quality Beef: A Case Study, Bruce Babcock, Dermot J. Hayes, John Lawrence, Roxanne L. Clemens

John Lawrence

Many farmers who produce high-quality products do not use market mechanisms that would allow them to differentiate their products and take the fullest advantage of price premiums. This paper describes a pilot program to develop and commercialize an origin-based collective brand for very high quality US beef. We hypothesized that, by using specific market mechanisms to differentiate the beef, cattle producers might be able to capture a greater share of price premiums often captured elsewhere in the marketing channel. Specifically, the pilot program analyzed the feasibility of two mechanisms for differentiating and marketing beef: a certification mark and a USDA ...


Economic Evaluation Of New Technologies For Pork Producers: Examples Of All-In All-Out And Segregated Early Weaning, John Lawrence 2016 Iowa State University

Economic Evaluation Of New Technologies For Pork Producers: Examples Of All-In All-Out And Segregated Early Weaning, John Lawrence

John Lawrence

Objective: To describe a method to evaluate both the profitability and feasibility of potential investments in a pork-raising enterprise.

Design and procedure: Formulas are given to allow an economic analysis addressing both the feasibility and profitability of a project. Data from a hypothetical farm considering whether to adopt an all-in–all-out and a segregated early weaning scheme are used as examples to illustrate the formulas.

Implications: When considering whether to adopt a new technology, it is important to first calculate both the profitability and feasibility of the investment


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