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Untangling The Economic And Social Impediments To Producer Adoption Of Organic Wheat, Donya L. Ralph-Quarnstrom 2019 Utah State University

Untangling The Economic And Social Impediments To Producer Adoption Of Organic Wheat, Donya L. Ralph-Quarnstrom

All Graduate Theses and Dissertations

Consumer demand for organic products has shown double-digit growth in recent years encouraging the development of a wider range of goods (Greene, 2017). Americans with an annual household income under $30,000 actively purchase organic foods at nearly the same rate as households with over $75,000 in annual incomes, 42% versus 49% (Greene et al., 2017). Previous research observed the adoption of organic farming practices on a combination of different grains, fruits and vegetables, meat, and dairy products from across the globe. However, this is the first study to examine the adoption of organic wheat in the Western U ...


Impact Of Hydraulic Residence Time On Nitrate Removal In Pilot-Scale Woodchip Bioreactors, E. A. Martin, Morgan P. Davis, Thomas B. Moorman, Thomas M. Isenhart, Michelle L. Soupir 2019 Iowa State University

Impact Of Hydraulic Residence Time On Nitrate Removal In Pilot-Scale Woodchip Bioreactors, E. A. Martin, Morgan P. Davis, Thomas B. Moorman, Thomas M. Isenhart, Michelle L. Soupir

Agricultural and Biosystems Engineering Publications

Nitrate (NO3−N) export from row crop agricultural systems with subsurface tile drainage continues to be a major water quality concern. Woodchip bioreactors are an effective edge-of-field practice designed to remove NO3−N from tile drainage. The NO3−N removal rate of woodchip bioreactors can be impacted by several factors, including hydraulic residence time(HRT). This study examined the impact of three HRTs, 2 h, 8 h, and 16 h, on NO3−N removal in a set of nine pilot-scale woodchip bioreactors in Central Iowa. NO3−N concentration reduction from the inlet to the outlet was significantly different for all ...


Large-Scale Gene Co-Expression Network As A Source Of Functional Annotation For Cattle Genes, Hamid Beiki, Ardeshir Nejati-Javaremi, Abbas Pakdel, Ali Masoudi-Nejad, Zhi-Liang Hu, James M. Reecy 2019 Iowa State University

Large-Scale Gene Co-Expression Network As A Source Of Functional Annotation For Cattle Genes, Hamid Beiki, Ardeshir Nejati-Javaremi, Abbas Pakdel, Ali Masoudi-Nejad, Zhi-Liang Hu, James M. Reecy

James M Reecy

Background: Genome sequencing and subsequent gene annotation of genomes has led to the elucidation of many genes, but in vertebrates the actual number of protein coding genes are very consistent across species (~20,000). Seven years after sequencing the cattle genome, there are still genes that have limited annotation and the function of many genes are still not understood, or partly understood at best. Based on the assumption that genes with similar patterns of expression across a vast array of tissues and experimental conditions are likely to encode proteins with related functions or participate within a given pathway, we constructed ...


Network Analysis Reveals Putative Genes Affecting Meat Quality In Angus Cattle, Raluca G. Mateescu, Dorian J. Garrick, James M. Reecy 2019 University of Florida

Network Analysis Reveals Putative Genes Affecting Meat Quality In Angus Cattle, Raluca G. Mateescu, Dorian J. Garrick, James M. Reecy

James M Reecy

Improvements in eating satisfaction will benefit consumers and should increase beef demand which is of interest to the beef industry. Tenderness, juiciness, and flavor are major determinants of the palatability of beef and are often used to reflect eating satisfaction. Carcass qualities are used as indicator traits for meat quality, with higher quality grade carcasses expected to relate to more tender and palatable meat. However, meat quality is a complex concept determined by many component traits making interpretation of genome-wide association studies (GWAS) on any one component challenging to interpret. Recent approaches combining traditional GWAS with gene network interactions theory ...


Differences In The Skeletal Muscle Transcriptome Profile Associated With Extreme Values Of Fatty Acids Content, Aline S. M. Cesar, Luciana C. A. Regitano, Mirele D. Poleti, Sónia C. S. Andrade, Polyana C. Tizioto, Priscila S. N. Oliveira, Andrezza M. Felício, Michele L. do Nascimento, Amália S. Chaves, Dante P. D. Lanna, Rymer R. Tullio, Renata T. Nassu, James E. Koltes, Eric Frtiz-Waters, Gerson B. Mourão, Adhemar Zerlotini-Neto, James M. Reecy, Luiz L. Coutinho 2019 Iowa State University

Differences In The Skeletal Muscle Transcriptome Profile Associated With Extreme Values Of Fatty Acids Content, Aline S. M. Cesar, Luciana C. A. Regitano, Mirele D. Poleti, Sónia C. S. Andrade, Polyana C. Tizioto, Priscila S. N. Oliveira, Andrezza M. Felício, Michele L. Do Nascimento, Amália S. Chaves, Dante P. D. Lanna, Rymer R. Tullio, Renata T. Nassu, James E. Koltes, Eric Frtiz-Waters, Gerson B. Mourão, Adhemar Zerlotini-Neto, James M. Reecy, Luiz L. Coutinho

James M Reecy

Background: Lipids are a class of molecules that play an important role in cellular structure and metabolism in all cell types. In the last few decades, it has been reported that long-chain fatty acids (FAs) are involved in several biological functions from transcriptional regulation to physiological processes. Several fatty acids have been both positively and negatively implicated in different biological processes in skeletal muscle and other tissues. To gain insight into biological processes associated with fatty acid content in skeletal muscle, the aim of the present study was to identify differentially expressed genes (DEGs) and functional pathways related to gene ...


Deriving Gene Networks From Snp Associated With Triacylglycerol And Phospholipid Fatty Acid Fractions From Ribeyes Of Angus Cattle, Justin W. Buchanan, James M. Reecy, Dorian J. Garrick, Qing Duan, Donald C. Beitz, James E. Koltes, Mahdi Saatchi, Lars Koesterke, Raluca G. Mateescu 2019 University of California, Davis

Deriving Gene Networks From Snp Associated With Triacylglycerol And Phospholipid Fatty Acid Fractions From Ribeyes Of Angus Cattle, Justin W. Buchanan, James M. Reecy, Dorian J. Garrick, Qing Duan, Donald C. Beitz, James E. Koltes, Mahdi Saatchi, Lars Koesterke, Raluca G. Mateescu

James M Reecy

The fatty acid profile of beef is a complex trait that can benefit from gene-interaction network analysis to understand relationships among loci that contribute to phenotypic variation. Phenotypic measures of fatty acid profile from triacylglycerol and phospholipid fractions of longissimus muscle, pedigree information, and Illumina 54 k bovine SNP genotypes were utilized to derive an annotated gene network associated with fatty acid composition in 1,833 Angus beef cattle. The Bayes-B statistical model was utilized to perform a genome wide association study to estimate associations between 54 k SNP genotypes and 39 individual fatty acid phenotypes within each fraction. Posterior ...


Genetic Architecture Of Gene Expression Underlying Variation In Host Response To Porcine Reproductive And Respiratory Syndrome Virus Infection, Arun Kommadath, Hua Bao, Igseo Choi, James M. Reecy, James E. Koltes, Elyn Fritz-Waters, Chris J. Eisley, Jason R. Grant, Robert R. R. Rowland, Christopher K. Tuggle, Jack C. M. Dekkers, Joan K. Lunney, Le Luo Guan, Paul Stothard, Graham S. Plastow 2019 University of Alberta

Genetic Architecture Of Gene Expression Underlying Variation In Host Response To Porcine Reproductive And Respiratory Syndrome Virus Infection, Arun Kommadath, Hua Bao, Igseo Choi, James M. Reecy, James E. Koltes, Elyn Fritz-Waters, Chris J. Eisley, Jason R. Grant, Robert R. R. Rowland, Christopher K. Tuggle, Jack C. M. Dekkers, Joan K. Lunney, Le Luo Guan, Paul Stothard, Graham S. Plastow

James M Reecy

It has been shown that inter-individual variation in host response to porcine reproductive and respiratory syndrome (PRRS) has a heritable component, yet little is known about the underlying genetic architecture of gene expression in response to PRRS virus (PRRSV) infection. Here, we integrated genome-wide genotype, gene expression, viremia level, and weight gain data to identify genetic polymorphisms that are associated with variation in inter-individual gene expression and response to PRRSV infection in pigs. RNA-seq analysis of peripheral blood samples collected just prior to experimental challenge (day 0) and at 4, 7, 11 and 14 days post infection from 44 pigs ...


Design And Validation Of A 90k Snp Genotyping Assay For The Water Buffalo (Bubalus Bubalis), Daniela Iamartino, Ezequiel L. Nicolazzi, Curtis P. Van Tassell, James M. Reecy, Eric R. Fritz-Waters, James E. Koltes, Stefano Biffani, Tad S. Sonstegard, Steven G. Schroeder, Paolo Ajmone-Marsan, Riccardo Negrini, Rolando Pasquariello, Paola Ramell, Angelo Coletta, Jose F. Garcia, Ahmad Ali, Luigi Ramunno, Gianfranco Cosenza, Denise A. A. de Oliveira, Marcela G. Drummond, Eduardo Bastianetto, Alessandro Davassi, Ali Pirani, Fiona Brew, John L. Williams 2019 AIA-LGS Associazione Italiana Allevatori±Laboratorio Genetica e Servizi

Design And Validation Of A 90k Snp Genotyping Assay For The Water Buffalo (Bubalus Bubalis), Daniela Iamartino, Ezequiel L. Nicolazzi, Curtis P. Van Tassell, James M. Reecy, Eric R. Fritz-Waters, James E. Koltes, Stefano Biffani, Tad S. Sonstegard, Steven G. Schroeder, Paolo Ajmone-Marsan, Riccardo Negrini, Rolando Pasquariello, Paola Ramell, Angelo Coletta, Jose F. Garcia, Ahmad Ali, Luigi Ramunno, Gianfranco Cosenza, Denise A. A. De Oliveira, Marcela G. Drummond, Eduardo Bastianetto, Alessandro Davassi, Ali Pirani, Fiona Brew, John L. Williams

James M Reecy

Background The availability of the bovine genome sequence and SNP panels has improved various genomic analyses, from exploring genetic diversity to aiding genetic selection. However, few of the SNP on the bovine chips are polymorphic in buffalo, therefore a panel of single nucleotide DNA markers exclusive for buffalo was necessary for molecular genetic analyses and to develop genomic selection approaches for water buffalo. The creation of a 90K SNP panel for river buffalo and testing in a genome wide association study for milk production is described here.

Methods The genomes of 73 buffaloes of 4 different breeds were sequenced and ...


Bioinformatic Analyses In Early Host Response To Porcine Reproductive And Respiratory Syndrome Virus (Prrsv) Reveals Pathway Differences Between Pigs With Alternate Genotypes For A Major Host Response Qtl, Martine Schroyen, Christopher Eisley, James E. Koltes, Eric Fritz-Waters, Igseo Choi, Graham S. Plastow, Leluo Guan, Paul Stothard, Hua Bao, Arun Kommadath, James M. Reecy, Joan K. Lunney, Robert R. R. Rowland, Jack C. M. Dekkers, Christopher K. Tuggle 2019 Iowa State University

Bioinformatic Analyses In Early Host Response To Porcine Reproductive And Respiratory Syndrome Virus (Prrsv) Reveals Pathway Differences Between Pigs With Alternate Genotypes For A Major Host Response Qtl, Martine Schroyen, Christopher Eisley, James E. Koltes, Eric Fritz-Waters, Igseo Choi, Graham S. Plastow, Leluo Guan, Paul Stothard, Hua Bao, Arun Kommadath, James M. Reecy, Joan K. Lunney, Robert R. R. Rowland, Jack C. M. Dekkers, Christopher K. Tuggle

James M Reecy

Background: A region on Sus scrofa chromosome 4 (SSC4) surrounding single nucleotide polymorphism (SNP) marker WUR10000125 (WUR) has been reported to be strongly associated with both weight gain and serum viremia in pigs after infection with PRRS virus (PRRSV). A proposed causal mutation in the guanylate binding protein 5 gene (GBP5) is predicted to truncate the encoded protein. To investigate transcriptional differences between WUR genotypes in early host response to PRRSV infection, an RNA-seq experiment was performed on globin depleted whole blood RNA collected on 0, 4, 7, 10 and 14 days post-infection (dpi) from eight littermate pairs with one ...


Developmental Progress And Current Status Of The Animal Qtldb, Zhi-Liang Hu, Carissa A. Park, James M. Reecy 2019 Iowa State University

Developmental Progress And Current Status Of The Animal Qtldb, Zhi-Liang Hu, Carissa A. Park, James M. Reecy

James M Reecy

The Animal QTL Database (QTLdb; http://www.animalgenome.org/QTLdb) has undergone dramatic growth in recent years in terms of new data curated, data downloads and new functions and tools. We have focused our development efforts to cope with challenges arising from rapid growth of newly published data and end users’ data demands, and to optimize data retrieval and analysis to facilitate users’ research. Evidenced by the 27 releases in the past 11 years, the growth of the QTLdb has been phenomenal. Here we report our recent progress which is highlighted by addition of one new species, four new data ...


Profile Of An E-Commerce Seller, Paul Hill, Laurel Farrer 2019 Utah State University

Profile Of An E-Commerce Seller, Paul Hill, Laurel Farrer

All Current Publications

This fact sheet provides a profile of an E-commerce seller for a remote location, including job description, average salary skills and tools needed, and career path.


Investigating The Effects Of Cognitive Diversity On The Small Gasoline Engines Problem Solving Ability Of Undergraduate Students Enrolled In A Team-Based Learning Formatted Agricultural Mechanics Course, Whitney L. Figland 2019 Louisiana State University and Agricultural and Mechanical College

Investigating The Effects Of Cognitive Diversity On The Small Gasoline Engines Problem Solving Ability Of Undergraduate Students Enrolled In A Team-Based Learning Formatted Agricultural Mechanics Course, Whitney L. Figland

LSU Master's Theses

Perhaps the most challenging factor in teaching is being able to foster a learning environment that meets the needs of all learners, which is often achieved by utilizing a plethora of instructional methods that develop critical thinking and problem solving skills. These 21st century skills have been recurrently identified as a critical component of today’s workplace and employers are hiring individuals who can solve complex problems, especially within agriculture. However, students in todays educational classrooms are often not receiving the hands-on instruction that is needed in order to foster the development of critical thinking and problem solving skills. Further ...


Manipulating Wild And Tamed Phytobiomes: Challenges And Opportunities, Terrence H. Bell, Gwyn A. Beattie, Kurt P. Kowalski, Amy T. Welty 2019 The Pennsylvania State University

Manipulating Wild And Tamed Phytobiomes: Challenges And Opportunities, Terrence H. Bell, Gwyn A. Beattie, Kurt P. Kowalski, Amy T. Welty

Gwyn Beattie

This white paper presents a series of perspectives on current and future phytobiome management, discussed at the Wild and Tamed Phytobiomes Symposium in University Park, PA, USA, in June 2018. To enhance plant productivity and health, and to translate lab- and greenhouse-based phytobiome research to field applications, the academic community and end-users need to address a variety of scientific, practical, and social challenges. Prior discussion of phytobiomes has focused heavily on plant-associated bacterial and fungal assemblages, but the phytobiomes concept covers all factors that influence plant function. Here we discuss various management considerations, including abiotic conditions (e.g. soil, nutrient ...


Considerations For Sage-Grouse Management Objectives, David K. Dahlgren, Terry A. Messmer, Eric T. Thacker 2019 Utah State University

Considerations For Sage-Grouse Management Objectives, David K. Dahlgren, Terry A. Messmer, Eric T. Thacker

Terry A. Messmer

This fact sheet describes ways to conserve and manage sage-grouse and includes information on population dynamics; movements, habitat, and climatic interactions; and management objectives.


Development Of Gluten-Free Egg Pasta Based On Amaranth, Maize And Sorghum, Laura Paux, Kurt A. Rosentrater 2019 Iowa State University

Development Of Gluten-Free Egg Pasta Based On Amaranth, Maize And Sorghum, Laura Paux, Kurt A. Rosentrater

Kurt A. Rosentrater

Due to increase of the population affected by Coeliac disease and awareness of consumers about the relationship between food and health, the production of cereal products from raw materials other than wheat is of interest. The aim of the work was to produce good quality gluten-free spaghettis, based on sorghum, amaranth and maize flour. Response surface methodology was applied to determine optimal formulation for the production of pasta. The resulting products of the experimental design were characterized regarding humidity, color, density, water activity, texture (firmness and elasticity), optimal cooking time, cooking weight, and cooking loss. The main trials were compared ...


Transporting More Dollars To The Bank, Matt Ritter, Mike Ellis, Anna Johnson 2019 Elanco Animal Health

Transporting More Dollars To The Bank, Matt Ritter, Mike Ellis, Anna Johnson

Anna K. Butters-Johnson

Introduction

Transport losses in market weight pigs (dead and nonambulatory pigs) represent animal welfare, legal, and economic concerns to the US swine industry. 1 First of all, improving the well-being of pigs during transport and reducing the incidence of dead and non-ambulatory pigs are animal welfare priorities for the US swine industry. 2 Secondly, non-ambulatory livestock are the subject of increased rules and regulations. For example, United States Department of Agriculture (USDA) inspectors and plant welfare auditors evaluate how non-ambulatory pigs are handled at the packing plant. Improper handling of non-ambulatory pigs at the plant can result in a USDA ...


Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano 2019 Iowa State University

Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano

John E. Sawyer

The possibility that N fertilizer increases soil organic matter (SOM) mineralization and, as a result, reduces SOM stocks has led to a great debate about the long-term sustainability of maize-based agroecosystems as well as the best method to estimate fertilizer N use efficiency (FNUE). Much of this debate is because synthetic N fertilizer can positively or negatively affect SOM mineralization via several direct and indirect pathways. Here, we test a series of hypotheses to determine the direction, magnitude, and mechanism of N fertilizer effect on SOM mineralization and discuss the implications for methods to estimate FNUE.Wemeasured the effect of ...


Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano 2019 Iowa State University

Nitrogen Fertilizer Suppresses Mineralization Of Soil Organic Matter In Maize Agroecosystems, Navreet K. Mahal, William R. Osterholz, Fernando E. Miguez, Hanna J. Poffenbarger, John E. Sawyer, Daniel C. Olk, Sotirios V. Archontoulis, Michael J. Castellano

Michael Castellano

The possibility that N fertilizer increases soil organic matter (SOM) mineralization and, as a result, reduces SOM stocks has led to a great debate about the long-term sustainability of maize-based agroecosystems as well as the best method to estimate fertilizer N use efficiency (FNUE). Much of this debate is because synthetic N fertilizer can positively or negatively affect SOM mineralization via several direct and indirect pathways. Here, we test a series of hypotheses to determine the direction, magnitude, and mechanism of N fertilizer effect on SOM mineralization and discuss the implications for methods to estimate FNUE.Wemeasured the effect of ...


Setting The Farm Animal Welfare Scene In North America, Anna K. Johnson 2019 Iowa State University

Setting The Farm Animal Welfare Scene In North America, Anna K. Johnson

Anna K. Butters-Johnson

The objectives of this paper are to (1) set the scene on what animal welfare is, the schools that one can subscribe and how this could influence the direction that farm animal welfare could go (2) provide an overview on some of the critical farm animal welfare events that have occurred over the past 10 years in North America and (3) to review the legislative events; past and future that will affect farm animal welfare. Animal welfare is not a term that arose in science to express a scientific concept; rather it arose in western civilization through society to express ...


Genetic Dissection Of Haploid Male Fertility In Maize (Zea Mays L.), Jiwei Yang, Yanzhi Qu, Qiong Chen, Jihua Tang, Thomas Lubberstedt, Haochuan LI, Zonghua LIu 2019 Henan Agriculture University

Genetic Dissection Of Haploid Male Fertility In Maize (Zea Mays L.), Jiwei Yang, Yanzhi Qu, Qiong Chen, Jihua Tang, Thomas Lubberstedt, Haochuan Li, Zonghua Liu

Thomas Lubberstedt

Haploid genome doubling is a key limiting step of haploid breeding in maize. Spontaneous restoration of haploid male fertility (HMF) provides a more promising method than the artificial doubling process. To reveal the genetic basis of HMF, haploids were obtained from the offspring of 285 F2:3 families, derived from the cross Zheng58 × K22. The F2:3 families were used as the female donor and Yu high inducer No. 1 (YHI‐1) as the male inducer line. The rates of HMF from each family line were evaluated at two field sites over two planting seasons. HMF displayed incomplete dominance. Transgressive ...


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