Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

University of Arkansas, Fayetteville

Discipline
Keyword
Publication Year
Publication
Publication Type

Articles 361 - 390 of 3020

Full-Text Articles in Entire DC Network

Evaluating Margin Protection (Mp) Crop Insurance As A Risk Management Tool For Rice Producers In Arkansas, Kaleem Azmat Chattha Aug 2024

Evaluating Margin Protection (Mp) Crop Insurance As A Risk Management Tool For Rice Producers In Arkansas, Kaleem Azmat Chattha

Graduate Theses and Dissertations

Agricultural producers bear many risks, including production risks stemming from uncertainty in weather and pest pressure and price risks arising from market volatility. Federal Crop Insurance has become one of the most popular tools to manage these risks. While yield and revenue crop insurance tend to be the most popular production and price risk management tools provided by the government, participation in Margin Protection insurance lags far behind despite providing production, crop price, and input price risk protection. This study aims to uncover whether Margin Protection crop insurance is an effective risk management tool by estimating the optimal coverage level …


The Effects Of Cover Crop Adoption On Yield Distributions Under Extreme Drought, Emory Johnson Aug 2024

The Effects Of Cover Crop Adoption On Yield Distributions Under Extreme Drought, Emory Johnson

Graduate Theses and Dissertations

Increased frequency and severity of extreme weather events due to climate change negatively impact agriculture output. Of particular concern is the adverse impact of droughts on corn and soybean yields, as these crops represent a significant portion of cash crop receipts in the United States. Cover crops are one practice that has gained attention due to their agronomic benefits and their potential to reduce downside production risk for producers. This study focuses on the impact of cover crop adoption on corn and soybean yields during drought conditions. We use cover crop adoption data from the Operational Tillage Information System, RMA …


Mental Health Calls For Service During The Covid-19 Pandemic: Examining The Geographic Distribution And Correlates Of Service Requests In Little Rock, Arkansas, Mckayla Bishop Aug 2024

Mental Health Calls For Service During The Covid-19 Pandemic: Examining The Geographic Distribution And Correlates Of Service Requests In Little Rock, Arkansas, Mckayla Bishop

Graduate Theses and Dissertations

In response to the Covid-19 global crisis, the United States implemented social interaction restrictions to curb the infection rate amongst citizens, affecting residents' mental health by adding strain from daily routine change. This study examines how mental health has changed during the pandemic by focusing on geospatial differences of volume and concentration within 311 calls in Little Rock, Arkansas in 2018 and 2020. Our data comes from the City of Little Rock’s open database to construct geospatial maps (n= 155 block groups), along with Census survey data logistic regression models to show differences in community characteristics. Overall, mental health worsened …


L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile, Danielle M. Maynard Aug 2024

L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile, Danielle M. Maynard

Graduate Theses and Dissertations

The SpoIIE protein plays a crucial role in the sporulation process of Clostridioides difficile, a pathogen responsible for severe gastrointestinal diseases. Understanding the structural and functional aspects of SpoIIE is pivotal for deciphering its role in sporulation and exploring its potential as a therapeutic target. This study investigates the impact of varying concentrations of L-arabinose on the overexpression of SpoIIE in C. difficile, aiming to optimize protein yield and purity for subsequent crystallization and structural determination via X-ray crystallography. Using a recombinant expression system in Escherichia coli, different concentrations of L-arabinose were employed to induce SpoIIE overexpression. Protein purification was …


Alternative Methods For Finishing Beef Cattle: Effects On Performance, Carcass Quality, And Meat Characteristics, Michelle Johnson Aug 2024

Alternative Methods For Finishing Beef Cattle: Effects On Performance, Carcass Quality, And Meat Characteristics, Michelle Johnson

Graduate Theses and Dissertations

The objective of these studies was to evaluate the effects of alternative finishing methods on the live performance, carcass quality, and meat characteristics of beef steers. In study 1, treatments consisted of a conventional feedlot finishing diet with roughage included in the ration (FDLT); a high starch diet fed at 2-2.25% of BW with ad libitum access to bermudagrass pastures (STCH); or a high by-product diet fed at 2-2.25% of BW with ad libitum access to bermudagrass pastures (BYPD). Steers were fed their respective diets once daily and weighed every 28 days until deemed finished. Cattle were then transported and …


Atypical Responses To Sensory Stimuli Or Eating Environments In Children With Autism Spectrum Disorder, Lydia Rockers Aug 2024

Atypical Responses To Sensory Stimuli Or Eating Environments In Children With Autism Spectrum Disorder, Lydia Rockers

Graduate Theses and Dissertations

Children with autism spectrum disorder (ASD) often encounter challenges in processing sensory inputs. Children with ASD may experience feeding difficulties and over- or under- stimulation during food-related activities such as eating or shopping. These have impacts on the health and well-being of individuals with ASD in childhood and throughout their lives. Further research is needed to address the impact of ambient sound levels in a retail or restaurant setting. The main objective of this thesis was to address these gaps by identifying responses to various environmental and food related stimuli. The findings of this research addressed differences in responses between …


Exploring The Effects Of An Alfalfa Leaf-Derived Adsorbent On Microbial Community, Ileal Morphology, Barrier Function, And Immunity In Turkey Poults During Chronic Aflatoxin B1 Exposure, Maria De Jesus Nava-Ramirez, Jing Liu, Juan Omar Hernandez-Ramirez, Xochitl Hernandez-Velasco, Juan D. Latorre, Alma Vazquez-Duran, Guolong Zhang, Roberto Señas-Cuesta, Sergio Gomez-Rosales, Andressa Stein, Billy M. Hargis, Guillermo Tellez-Isaias, Abraham Mendez-Albores, Jesus A. Maguey-Gonzalez Jul 2024

Exploring The Effects Of An Alfalfa Leaf-Derived Adsorbent On Microbial Community, Ileal Morphology, Barrier Function, And Immunity In Turkey Poults During Chronic Aflatoxin B1 Exposure, Maria De Jesus Nava-Ramirez, Jing Liu, Juan Omar Hernandez-Ramirez, Xochitl Hernandez-Velasco, Juan D. Latorre, Alma Vazquez-Duran, Guolong Zhang, Roberto Señas-Cuesta, Sergio Gomez-Rosales, Andressa Stein, Billy M. Hargis, Guillermo Tellez-Isaias, Abraham Mendez-Albores, Jesus A. Maguey-Gonzalez

Poultry Science Faculty Publications and Presentations

This article follows-up on our recently published work, which evaluated the impact of the addition of an alfalfa leaf-derived adsorbent in the aflatoxin B1 (AFB1)-contaminated diet in regard to the production parameters, blood cell count, serum biochemistry, liver enzymes, and liver histology of turkey poults. This paper presents complementary results on microbial community, ileal morphology, barrier function, and immunity. For this purpose, 350 1-day-old female turkey poults were randomly distributed into five groups: (1) Control, AFB1-free diet; (2) AF, AFB1-contaminated diet at 250 ng/g; (3) alfalfa, AFB1-free diet + 0.5% ( …


Arkansas Corn And Grain Sorghum Research Studies 2023, Jason Kelley, Travis Faske Jul 2024

Arkansas Corn And Grain Sorghum Research Studies 2023, Jason Kelley, Travis Faske

Arkansas Agricultural Experiment Station Research Series

The 2023 edition of the Arkansas Corn and Grain Sorghum Research Studies Series includes research results on topics pertaining to corn and grain sorghum production, including weed, disease, and insect management; economics; irrigation; agronomics; soil fertility; mycotoxins; cover crop management; and research verification program results. Our objective is to capture and broadly distribute the results of research projects funded by the Arkansas Corn and Grain Sorghum Board. The intended audience includes producers and their advisors, current investigators, and future researchers. The Series serves as a citable archive of research results.


Increased Co2 Levels During The First Half Of Incubation At High Altitude Modifies Embryonic Development Of Fertile Leghorn Breeder Eggs, Marco A. Juarez-Estrada, Erik I. Lopez-Ruiz, Sonia Lopez-Cordova, G. Tellez-Isaias, Omar F. Prado-Rebolledo Jul 2024

Increased Co2 Levels During The First Half Of Incubation At High Altitude Modifies Embryonic Development Of Fertile Leghorn Breeder Eggs, Marco A. Juarez-Estrada, Erik I. Lopez-Ruiz, Sonia Lopez-Cordova, G. Tellez-Isaias, Omar F. Prado-Rebolledo

Political Science Faculty Publications and Presentations

The exchange of oxygen (O2) and carbon dioxide (CO2) within an incubator has a significant impact on embryonic development (ED) and hatching processes. This study examines the influence of non-ventilation (NV) conditions during the first ten days of incubation at high altitudes on Leghorn hens hatching eggs. Five hundred four hatching eggs were equally divided into three treatment groups and placed in twelve incubators (R = 4). The first group was subjected to standard ventilated conditions (V) during the setting phase. The ventilation inlet holes of the remaining incubators in the NV treatments were closed with …


Impact Of Non-Thermal Plasma Generated Using Air And Nitrogen On Functional Properties Of Milk Protein Dispersions, Nikitha Modupalli, Md Mahfuzur Rahman Jul 2024

Impact Of Non-Thermal Plasma Generated Using Air And Nitrogen On Functional Properties Of Milk Protein Dispersions, Nikitha Modupalli, Md Mahfuzur Rahman

Food Science Faculty Publications and Presentations

This study focuses on improving the functionalities of milk protein concentrate (MPC) using a nonthermal plasma jet and plasma-activated water (PAW) with atmospheric air and nitrogen as source gases. The 5% and 10% MPC dispersions were directly treated with a plasma jet, and PAW was used to make the MPC dispersions. The dispersions were analyzed for changes in protein structure and functional properties. The treatment altered the secondary structure of MPC protein structure by increasing β-components and changing the order of random coils. The solubility of the PAW-treated 5% protein dispersions doubled due to plasma-induced modification of hydrophilic and covalent …


Mitigating Toxic Metal Exposure Through Leafy Greens: A Comprehensive Review Contrasting Cadmium And Lead In Spinach, Angelia L. Seyfferth, Matthew A. Limmer, Benjamin R. Runkle, Rufus L. Chaney Jun 2024

Mitigating Toxic Metal Exposure Through Leafy Greens: A Comprehensive Review Contrasting Cadmium And Lead In Spinach, Angelia L. Seyfferth, Matthew A. Limmer, Benjamin R. Runkle, Rufus L. Chaney

Biological Sciences Faculty Publications and Presentations

Metals and metalloids (hereafter, metal(loid)s) in plant-based foods are a source of exposure to humans, but not all metal(loid)-food interactions are the same. Differences exist between metal(loid)s in terms of their behavior in soils and in how they are taken up by plants and stored in the edible plant tissue/food. Thus, there cannot be one consistent solution to reducing toxic metal(loid)s exposure to humans from foods. In addition, how metal(loid)s are absorbed, distributed, metabolized, and excreted by the human body differs based on both the metal(loid), other elements and nutrients in the food, and the nutritional status of the human. …


Slime Molds (Myxomycetes) Causing A “Disease” In Crop Plants And Cultivated Mushrooms, Zhaojuan Zhang, Chao Zhi, Yu Li, Steven L. Stephenson, Pu Liu Jun 2024

Slime Molds (Myxomycetes) Causing A “Disease” In Crop Plants And Cultivated Mushrooms, Zhaojuan Zhang, Chao Zhi, Yu Li, Steven L. Stephenson, Pu Liu

Biological Sciences Faculty Publications and Presentations

Myxomycetes (plasmodial slime molds) are eukaryotic protist predators that are associated with wood, leaf litter, and soil in forests, where they feed on bacteria, protozoans, and (to a more limited extent) fungi. The health of crop plants is essential because they represent a primary food source for humans. However, when myxomycetes produce numerous fruiting bodies on the stems and leaves of crop plants, which is herein referred to as a myxomycete colonization, this has the potential of interfering with plant photosynthesis, transpiration and respiration by blocking out light and covering stomata. Myxomycetes are not pathogens, but their occurrence on plants …


Identifying Dietary Timing Of Organic Trace Minerals To Reduce The Incidence Of Osteomyelitis Lameness In Broiler Chickens Using The Aerosol Transmission Model, Khawla Alharbi, Andi Asnayanti, Anh Dang Trieu Do, Ruvindu Perera, Layla Al-Mitib, Abdulkarim Shwani, Marco A. Rebollo, Michael T. Kidd, Adnan Ali Khalaf Alrubaye Jun 2024

Identifying Dietary Timing Of Organic Trace Minerals To Reduce The Incidence Of Osteomyelitis Lameness In Broiler Chickens Using The Aerosol Transmission Model, Khawla Alharbi, Andi Asnayanti, Anh Dang Trieu Do, Ruvindu Perera, Layla Al-Mitib, Abdulkarim Shwani, Marco A. Rebollo, Michael T. Kidd, Adnan Ali Khalaf Alrubaye

Poultry Science Faculty Publications and Presentations

Our prior research demonstrated a 20% to 25% reduction in bacterial chondronecrosis with osteomyelitis (BCO) lameness in broilers with organic Zn, Mn, and Cu (Availa® ZMC) supplementation. Expanding on this, we investigated the optimal timing for Availa® ZMC feeding to mitigate BCO lameness and reduce feed additive costs in the poultry industry. In this study, we compared the application of 0.15% Availa® ZMC for 56 days, the first 28 days, and the last 28 days. The experimental design was a randomized block design involving 1560 one-day-old chicks distributed across two wire-floor pens as BCO source infection and …


Titration Of Dietary Histidine During A 22-To 42-Day Feeding Phase Following A 0-To 21-Day Feeding Phase With Variable Dietary Histidine Concentrations In Female Cobb 500 Broilers, Kenneth B. Nelson, Matheus F. Costa, Savannah C. Wells-Crofton, Shivaram K. Rao, Garrett J. Mullenix, Craig W. Maynard, Michael T. Kidd Jun 2024

Titration Of Dietary Histidine During A 22-To 42-Day Feeding Phase Following A 0-To 21-Day Feeding Phase With Variable Dietary Histidine Concentrations In Female Cobb 500 Broilers, Kenneth B. Nelson, Matheus F. Costa, Savannah C. Wells-Crofton, Shivaram K. Rao, Garrett J. Mullenix, Craig W. Maynard, Michael T. Kidd

Poultry Science Faculty Publications and Presentations

Further reductions of crude protein in broiler diets may cause essential amino acids traditionally considered to be supplied at adequate levels to become limiting. Requirement data for histidine are currently scarce and this amino acid is uniquely able to be stored within the body. Thus, the objectives of this study were to evaluate female Cobb 500 broiler growth performance and carcass characteristic responsiveness to increasing digestible histidine to digestible lysine ratios (dHis:dLys) during a 22- to 42-day feeding period and determine if dHis:dLys in preceding feeds influence the former responses. Starter diets were formulated to contain dHis:dLys of 33% or …


Association Of Knowledge And Health Habits With Physiological Hydration Status, Brendon P. Mcdermott, Xiujing Zhao, Jennifer C. Veilleux Jun 2024

Association Of Knowledge And Health Habits With Physiological Hydration Status, Brendon P. Mcdermott, Xiujing Zhao, Jennifer C. Veilleux

Poultry Science Faculty Publications and Presentations

The association of hydration knowledge and health habits with hydration status and fluid intake is rarely examined. We sought to determine whether knowledge or physical health behaviors predict physiological hydration status and fluid intake. Ninety-six participants (59 female; 27 ± 10 year) completed the previously validated hydration survey. Participants then recorded total fluids consumed (TFC), collected urine, and tracked void frequency for 24 h. Hydration status was assessed via 24 h urine specific gravity (USG) and osmolality (Uosm). Health behaviors included self-reported physical activity, BMI, smoking, alcoholic drinking, and sleep status. TFC was significantly correlated with 24 h …


Occurrence Of Lotmaria Passim In Africanized And European Honey Bee, Apis Mellifera, Lineages From The United States, Mary-Kate Williams, Dylan Cleary, Allen Szalanski Jun 2024

Occurrence Of Lotmaria Passim In Africanized And European Honey Bee, Apis Mellifera, Lineages From The United States, Mary-Kate Williams, Dylan Cleary, Allen Szalanski

Entomology and Plant Pathology Faculty Publications and Presentations

Honey bee populations in the United States have been under stress for the past several decades. Several internal parasites may contribute to this, including the trypanosome Lotmaria passim. It is unknown how widespread the honey bee parasite, L. passim, is in Africanized honey bee (AHB) populations in the United States. A total of 321 feral honey bee colony samples which had been previously recorded to be of Africanized origin using molecular diagnostics from California (n=3), New Mexico (n=46), Oklahoma (n=57), Texas (n=106), and Utah (n=109) were used in this study. Of these samples, a total of 15 (4.7%) …


Brown Midrib (Bmr) And Plant Age Impact Fall Armyworm (Spodoptera Frugiperda) Growth And Development In Sorghum-Sudangrass (Sorghum X Drummondii), Alejandro Vasquez, Devi Balakrishnan, Jessica Ayala, Kelly Loftin, Joe Louie, Rupesh Kariyat Jun 2024

Brown Midrib (Bmr) And Plant Age Impact Fall Armyworm (Spodoptera Frugiperda) Growth And Development In Sorghum-Sudangrass (Sorghum X Drummondii), Alejandro Vasquez, Devi Balakrishnan, Jessica Ayala, Kelly Loftin, Joe Louie, Rupesh Kariyat

Entomology and Plant Pathology Faculty Publications and Presentations

Economic losses from insect herbivory in agroecosystems has driven the development of integrated pest management strategies that reduce pest incidence and damage; however, traditional chemicals-based control is either being complemented or substituted with sustainable and integrated methods. Major sustainable pest management strategies revolve around improving host plant resistance, and one of these traits of interest is Brown midrib (BMR). Originally developed to increase nutritional value and ease of digestion for animal agriculture, BMR is a recessive plant gene usually found in annual grasses, including sorghum and sorghum-sudangrass hybrids. In sorghum-sudangrass, BMR expressed plants have lower amounts of lignin, which produces …


Assessing The Impact Of Spirulina Platensis And Organic Trace Minerals On The Incidence Of Bacterial Chondronecrosis With Osteomyelitis Lameness In Broilers Using An Aerosol Transmission Model, Andi Asnayanti, Amer Hasan, Khawla Alharbi, Intisar Abdullah Hassan, Walter Bottje, Samuel J. Rochell, Marco A. Rebollo, Michael T. Kidd, Adnan A.K. Alrubaye Jun 2024

Assessing The Impact Of Spirulina Platensis And Organic Trace Minerals On The Incidence Of Bacterial Chondronecrosis With Osteomyelitis Lameness In Broilers Using An Aerosol Transmission Model, Andi Asnayanti, Amer Hasan, Khawla Alharbi, Intisar Abdullah Hassan, Walter Bottje, Samuel J. Rochell, Marco A. Rebollo, Michael T. Kidd, Adnan A.K. Alrubaye

Poultry Science Faculty Publications and Presentations

Spirulina platensis is an emerging poultry diet source due to its essential nutrition and bioactive ingredients. Spirulina microalgae confers beneficial effects on broiler's growth performance, immune response, and antioxidant activity. We investigated the effect of Spirulina platensis on BCO lameness, one of the most driving factors for economic and animal well-being concerns in the poultry industry. Additionally, supplementation of Availa ZMC containing organic trace minerals – zinc, manganese, and copper – was shown to alleviate lameness by 20 to 25%. We hypothesized that pairing microalgae and organic trace minerals might confer a synergistic effect in reducing BCO. A 2 × …


Agronomic And Economic Productivity Of Summer Annual Forage Systems Under Different Poultry Litter Application Methods, Ivanelle Meyer, Michael P. Popp, Christine C. Nieman, Amanda J. Ashworth, Phillip R. Owens Jun 2024

Agronomic And Economic Productivity Of Summer Annual Forage Systems Under Different Poultry Litter Application Methods, Ivanelle Meyer, Michael P. Popp, Christine C. Nieman, Amanda J. Ashworth, Phillip R. Owens

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Poultry litter (litter) is a nutrient dense fertilizer that increases nutritive value and yield in pastures in the mid-southern US. Nutrient losses due to runoff and nitrogen volatilization are common when broadcasting litter. As such, incorporating litter below the soil surface (subsurface) was evaluated in comparison to broadcasting in 2021 and 2022 by quantifying yield and nutritive value of annual forages. The study was a randomized complete block design with three forage treatments—sorghum-sudangrass only (Sorghum bicolor L.), cowpea only (Vigna unguiculata L.), and their mixture, and three litter application methods (broadcast, subsurface, and a no litter control). Litter …


Soil Profile Distribution Of Nutrients In Contrasting Soils Amended With Struvite And Other Conventional Phosphorus Fertilizers, Tatum Simms, Kristofor R. Brye, Trenton L. Roberts, Lauren F. Greenlee Jun 2024

Soil Profile Distribution Of Nutrients In Contrasting Soils Amended With Struvite And Other Conventional Phosphorus Fertilizers, Tatum Simms, Kristofor R. Brye, Trenton L. Roberts, Lauren F. Greenlee

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Phosphorus (P) can be recovered from wastewater and used as an alternative fertilizer, namely, struvite [MgNH4PO4·6(H2O)]. However, the soil mobility of wastewater-derived P and other nutrients needs to be evaluated. The objective of this study was to compare the vertical distribution of water-soluble (WS) soil P and other nutrients from a synthetic-wastewater-derived electrochemically precipitated struvite (ECST) to that from a chemically precipitated struvite (CPST), triple superphosphate (TSP), monoammonium phosphate (MAP), and a control in six soils from Arkansas (AR; loam [L] and silt loam [SiL]), Missouri (MO; SiL 1 and SiL 2), and Nebraska …


Microbial Symbiont-Based Detoxification Of Different Phytotoxins And Synthetic Toxic Chemicals In Insect Pests And Pollinators, Olivia Kline, Neelendra K. Joshi Jun 2024

Microbial Symbiont-Based Detoxification Of Different Phytotoxins And Synthetic Toxic Chemicals In Insect Pests And Pollinators, Olivia Kline, Neelendra K. Joshi

Entomology and Plant Pathology Faculty Publications and Presentations

Insects are the most diverse form of life, and as such, they interact closely with humans, impacting our health, economy, and agriculture. Beneficial insect species contribute to pollination, biological control of pests, decomposition, and nutrient cycling. Pest species can cause damage to agricultural crops and vector diseases to humans and livestock. Insects are often exposed to toxic xenobiotics in the environment, both naturally occurring toxins like plant secondary metabolites and synthetic chemicals like herbicides, fungicides, and insecticides. Because of this, insects have evolved several mechanisms of resistance to toxic xenobiotics, including sequestration, behavioral avoidance, and enzymatic degradation, and in many …


A Review Of The Interaction Between Potassium Nutrition And Plant Disease Control, C. C. Ortel, T. L. Roberts, J. C. Rupe Jun 2024

A Review Of The Interaction Between Potassium Nutrition And Plant Disease Control, C. C. Ortel, T. L. Roberts, J. C. Rupe

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Potassium (K) is an essential macronutrient involved in many physiological and biochemical functions that affect a plant's susceptibility to disease. These processes include stomatal regulation, enzyme activation, and solute transport, each of which is often discussed through the lens of either plant nutrition or plant disease control. However, the interaction between these stresses and the resulting physiological and agronomic impact is an important consideration when managing a cropping system as a whole and is scarcely addressed in the literature. Therefore, a review of the literature was focused on the interaction of K nutrition and the resulting impact on plant disease …


The Effects Of Occupational Disruption During Covid-19 Lockdowns On Health: A Cross-Sectional Study, Bernard Austin Kigunda Muriithi, R. Curtis Bay Jun 2024

The Effects Of Occupational Disruption During Covid-19 Lockdowns On Health: A Cross-Sectional Study, Bernard Austin Kigunda Muriithi, R. Curtis Bay

Communication Disorders and Occupational Therapy Faculty Publications and Presentations

The disruption in daily activity performance during COVID-19 lockdowns is widely understood to have impacted health, but a better understanding of how restricted performance of specific activities are associated with health is needed. This cross-sectional study answers the following question: How were changes in the performance of 16 daily activities associated with health during COVID-19 lockdowns? A total of 116 participants completed an online survey rating their health before and during COVID-19 lockdowns and comparing their recollection of the performance of 16 activities before COVID-19 with their performance during lockdowns. Multiple stepwise linear regression analysis was used to estimate the …


The Effect Of Total Factor Productivity On The Food Security And Livelihood Vulnerability Of Farm Households In Bangladesh, Paresh Kumar Sarma, Mohammad Jahanghir Alam, Ismat Ara Begum, Adam M. Mckenzie May 2024

The Effect Of Total Factor Productivity On The Food Security And Livelihood Vulnerability Of Farm Households In Bangladesh, Paresh Kumar Sarma, Mohammad Jahanghir Alam, Ismat Ara Begum, Adam M. Mckenzie

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Food security and livelihood vulnerability are important issues for the economic sustainability of developing countries like Bangladesh. This study examines the influence of total factor productivity (TFP) on the livelihood vulnerability and food security of rice farming households in Bangladesh. Data from 1,841 rice farming households were extracted from the Bangladesh Integrated Household Survey (2015 and 2018) conducted by the International Food Policy Research Institute. Various statistical methods, such as the stochastic frontier model, principal component analysis, path analysis using structural equation modeling, and multivariate regression, were employed to analyze the data. The study utilizes a multivariate modeling approach that …


Revealing Microbial Community Composition And Disinfection Efficacy Evaluation In Wholesale Pork Markets Through 16s Rdna Sequencing, Miao He, Lingyan Ma, Wentao Lv, Yingping Xiao, Hua Yang, Xiofan Wang, Jiangchao Zhao, Hangzhen Lan, Wen Wang, Xingning Xiao May 2024

Revealing Microbial Community Composition And Disinfection Efficacy Evaluation In Wholesale Pork Markets Through 16s Rdna Sequencing, Miao He, Lingyan Ma, Wentao Lv, Yingping Xiao, Hua Yang, Xiofan Wang, Jiangchao Zhao, Hangzhen Lan, Wen Wang, Xingning Xiao

Animal Science Faculty Publications and Presentations

This study has employed 16S rDNA analysis to elucidate the characteristics of the microbial community in the surroundings, facilities, and meat samples collected from a pork wholesale market with the aim of revealing bacterial contamination. In addition, the efficacy of sodium hypochlorite disinfectant was assessed by comparing the bacterial communities in the viable samples before and after disinfection. The bacterial abundances in meat, chopping boards, and knives were positively correlated (r > 0.95, p <  .05), suggesting potential cross-contamination risks during market transactions. The species richness indices for the external transport vehicles, pork hooks, and floors were significantly different from those of the samples taken after decontamination (p <  .05). Linear discriminant analysis Effect Size (LEfSe) analyses showed that Firmicutes, Proteobacteria, and Chloroflexi were significantly more abundant in the transaction period, whereas Bacteroidetes levels decreased compared to the clean-up period. NaClO disinfection …


Effects Of Fast And Slow-Wilting Soybean Genotypes On Fall Armyworm (Spodoptera Frugiperda) Growth And Development, Jessica Ayala, Alejandro Vasquez, Devi Balakrishnan, Evelyn Madrigal, Justin George, Rupesh Kariyat May 2024

Effects Of Fast And Slow-Wilting Soybean Genotypes On Fall Armyworm (Spodoptera Frugiperda) Growth And Development, Jessica Ayala, Alejandro Vasquez, Devi Balakrishnan, Evelyn Madrigal, Justin George, Rupesh Kariyat

Entomology and Plant Pathology Faculty Publications and Presentations

Soybean (Glycine max) is the most important plant protein source, and Fall Armyworm (FAW, Spodoptera frugiperda) is considered a major pest. This study aimed to examine the impact of FAW feeding on soybean accessions that vary in their water use efficiency (WUE) traits, by examining FAW growth and life history parameters along with plant growth response to pest damage. Soybean accessions were grown in a greenhouse and exposed to FAW larval feeding for 48 h at three different soybean growth stages: V3, R3, and R6. The growth and development of the FAW and soybeans were monitored. Results showed that faster …


Duck Gut Metagenome Reveals The Microbiome Signatures Linked To Intestinal Regional, Temporal Development, And Rearing Condition, Lingyan Ma, Wentao Liu, Tao Zeng, Wen Wang, Qu Chen, Jiangchao Zhao, Guolong Zhang, Lizhi Lu, Hua Yang, Yingping Xiao May 2024

Duck Gut Metagenome Reveals The Microbiome Signatures Linked To Intestinal Regional, Temporal Development, And Rearing Condition, Lingyan Ma, Wentao Liu, Tao Zeng, Wen Wang, Qu Chen, Jiangchao Zhao, Guolong Zhang, Lizhi Lu, Hua Yang, Yingping Xiao

Animal Science Faculty Publications and Presentations

The duck gastrointestinal tract (GIT) harbors an abundance of microorganisms that play an important role in duck health and production. Here, we constructed the first relatively comprehensive duck gut microbial gene catalog (24 million genes) and 4437 metagenome-assembled genomes using 375 GIT metagenomic samples from four different duck breeds across five intestinal segments under two distinct rearing conditions. We further characterized the intestinal region-specific microbial taxonomy and their assigned functions, as well as the temporal development and maturation of the duck gut microbiome. Our metagenomic analysis revealed the similarity within the microbiota of the foregut and hindgut compartments, but distinctive …


Rationally Designed Peptoid Inhibitors Of Amyloid-Β Oligomerization, Mihyun Lim Waugh, Lauren M. Wolf, Kelly A. Moore, Shannon L. Servoss May 2024

Rationally Designed Peptoid Inhibitors Of Amyloid-Β Oligomerization, Mihyun Lim Waugh, Lauren M. Wolf, Kelly A. Moore, Shannon L. Servoss

Chemical Engineering Faculty Publications and Presentations

While plaques comprised of fibrillar Aβ aggregates are hallmarks of Alzheimer's disease, soluble Aβ oligomers present higher neurotoxicity. Thus, one therapeutic approach is to prevent the formation of Aβ oligomers and reduce their associated harmful effects. We have proposed a peptoid mimic of the Aβ hydrophobic KLVFF core as an ideal candidate aggregation inhibitor due to its ability to evade proteolytic degradation via repositioning of the side chain from the α-carbon to the amide nitrogen. This peptoid, JPT1, utilizes chiral sidechains to achieve a helical structure, while C-terminal addition of two phenylalanine residues places aromatic groups on two sides of …


International Rice Outlook: International Rice Baseline Projections 2023-2033, A. Durand-Morat, W. Mulimbi May 2024

International Rice Outlook: International Rice Baseline Projections 2023-2033, A. Durand-Morat, W. Mulimbi

AAES Research Reports and Research Bulletins

No abstract provided.


Evaluating The Effect Of Garden-Based Education On Young Learners’ Preferences For And Willingness To Try Healthy Food, Sierra Gregory May 2024

Evaluating The Effect Of Garden-Based Education On Young Learners’ Preferences For And Willingness To Try Healthy Food, Sierra Gregory

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Childhood obesity in American children has tripled in the last 20 years, and 85% of current healthcare spending is linked to diet-related diseases. The consumption of highly processed foods is linked to these trends and makes up more than half of an average American youths’ diet. Reducing the consumption of highly processed foods in children’s diets can be addressed, in part, by addressing childhood neophobia (willingness to try new foods) associated with whole foods like fruits and vegetables. Influence over behavioral areas such as nutrition and in early childhood is essential to long-term sustained health, and garden-based interventions shows promise …