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Current Trends And Experiences From A Contract Research Organization Perspective, Dan Moore

Proceedings of the Arkansas Nutrition Conference

The primary goal of this presentation is to provide an update on the trends of research observed at a contract research organization (CRO) in recent years as it relates to species, study design type and products tested, as well as, challenge models used and products that have shown benefits in various study designs. The information in the presentation is based off of studies conducted from 2014-2024 at one CRO, Colorado Quality Research (CQR), and represents the experiences at CQR. Many of the parameters discussed will be from 2014-2019 and 2020-2024 to observe trends from over 5 years ago and more …

Importance Of A Rooster Feed In Broiler Breeder Production, Alex Corzo, Marcelo Silva

Proceedings of the Arkansas Nutrition Conference

Of all feed phases in poultry production, rooster feeding is arguably the least studied. During the rear phase, there is general agreement that male and female broiler breeders can be provided a common feed program, only differing on feed amounts provided, that results in growth targets reached for each sex. It is during the production phase that there is some disagreement on the best way to support the nutritional needs of the adult rooster. A considerable segment of the world does employ a rooster feed as a way to better support the nutritional needs of working males. Other poultry operations …

Vitamin Update And Sustainability, Edgar Orlando Oviedo-Rondón

Proceedings of the Arkansas Nutrition Conference

This presentation addressed the status of research on vitamin nutrition in poultry species and current recommended levels. The economic, environmental, and socio-political aspects of sustainability are addressed. Most of the information presented is described in detail in the book Optimum Vitamin Nutrition for More Sustainable Poultry Farming (Oviedo-Rondon et al., 2023). However, this presentation also used more recent publications and news of the latest events related to scientific recommendations and the worldwide vitamin market. The objective is to provide a brief overview of scientific findings to aid nutritionists in the decision-making process when selecting optimum levels for poultry nutrition. …

Every Day Feeding Of Broiler Breeder Pullets, David Brandt

Proceedings of the Arkansas Nutrition Conference

Broiler breeders are characterized by their fast growth and sensitivity to light stimuli. Unlike commercial layers, they have a lower egg production rate and are kept on the floor during rearing and laying periods. Fertile eggs are the primary objective, necessitating careful management of their egg-laying properties, while controlling their body weights. Unrestricted feeding leads to early laying with poor peak and persistency in egg production. Therefore, nutrient intake must be restricted to achieve target body weights at light stimulation (22 weeks). This involves both quantitative and qualitative feed restrictions. Quantitative feed restriction can lead to issues such as poor …

Integration Of Commercial Broiler Data Into A Broiler Growth Model, David Brandt

Proceedings of the Arkansas Nutrition Conference

This study explores the alignment of theoretical broiler growth models with practical farm conditions, emphasizing the value of integrating commercial data into simulation models. The EFG Broiler Growth Model, developed by Emmens, Fisher and Gous, is highlighted for its mechanistic approach, predicting growth based on feed intake. While empirical models are useful, they are limited by changes in genetics. Both mechanistic and empirical models struggle to predict how broilers will respond to feed under the challenging conditions typically experienced in commercial operations. The study also discusses the development of empirical models to determine broiler responses to balanced protein and energy, …

Fifteen Years Of Findings: Advancements In Spring Dead Spot Research From 2009 To 2024, W. J. Hutchens, J. K. Anders, E. L. Butler, J. P. Kerns, D. S. Mccall, G. L. Miller, N. R. Walker

Horticulture Faculty Publications and Presentations

Spring dead spot (Ophiosphaerella spp.; SDS) is one of the most detrimental diseases to warm-season turfgrasses, particularly bermudagrass (Cynodon spp.), growing in climates where cold temperatures induce dormancy. The pathogen can infect the crowns, stolons, rhizomes, and roots of bermudagrass most of the year, but infection in the fall predisposes the turf to winter injury and plant death. Symptoms typically appear the following spring, making management of SDS challenging. Moreover, the biology, epidemiology, and management of SDS are not fully understood. Ample research has been conducted on SDS which was thoroughly summarized before 2009 by Tredway et al. …

Predicting Spatiotemporal Patterns Of Productivity And Grazing From Multispectral Data Using Neural Network Analysis Based On System Complexity, Amanda J. Ashworth, A. Avila, H. Smith, T. E. Winzeler, P. Owens, C. Flynn, P. O'Brien, D. Philipp, J. Su

Environmental Dynamics Faculty Publications and Presentations

Remote sensing tools, along with Global Navigation Satellite System cattle collars and digital soil maps, may help elucidate spatiotemporal relationships among soils, terrain, forages, and animals. However, standard computational procedures preclude systems-level evaluations across this continuum due to data inoperability and processing limitations. Deep learning, a subset of neural network, may elucidate efficiency of livestock production and linkages within the livestock-grazing environment. Consequently, we applied deep learning to environmental remote sensing data to (1) develop predictive models for yield and forage nutrition based on vegetation indices and (2) at a pixel-level (per 55 m²), identify how grazing is …

Assessment Of Novel Protein Ingredient Arthrospira Platensis And Soybean Genotype Amino Acid And Oil Selection Improvements On Broiler Performance For A 28-42 D Feeding Period, Savannah C. Wells-Crofton, Kenneth B. Nelson, Garrett J. Mullenix, Craig W. Maynard, Michael T. Kidd

Poultry Science Faculty Publications and Presentations

Two experiments were conducted to assess the efficiency of including the novel protein ingredient Arthrospira platensis or improved soybean meal in a broiler diet. The first experiment aimed to determine the feeding value of soybean meal produced from varieties of soybeans bred for increased amino acid content (SBAA) and improved oil content (SBO) compared to a conventional soybean variety in an ANOVA design fed to Cobb 500 female broilers for 28–42 d. The SBAA and SBO soybeans contained overall higher amino acid content and lower oligosaccharide content compared to the conventional soybean variety in addition to improved oil quality. The …

Drying Techniques For Precooked Hybrid Rice To Ensure Quality Of Instantized Rice, Anne Adhiambo Okeyo, Kaushik Luthra, Justin Siebenmorgen, Alan R. Vazquez, Griffiths Atungulu

Food Science Faculty Publications and Presentations

Background and Objectives

Due to the emergence of new hybrid rice cultivars, rice processors must refine their processing protocols to maintain the production of high-quality products. This is crucial for the instant rice processing industry. Therefore, this study aims to refine current convective heated air-drying processing methods to suit the new hybrid rice cultivars intended for instant rice production. New strategies to dry cooked rice were investigated. These included drying in a stepwise manner with high (230–200°C) and medium (190–160°C) air temperatures and drying at constant high (200°C) and medium (160°C) air temperatures. Changes in quality attributes of two new …

Could Measuring Factors Other Than A Lack Of Financial Resources Help In Achieving The Zero Hunger Goal, Jillian Hyink, Brandon R. Mcfadden, Brandy E. Phipps, Craig Gundersen

Agricultural Economics and Agribusiness Faculty Publications and Presentations

The second Sustainable Development Goal of Zero Hunger, defined by the United Nations, broadly focuses on several dimensions of food access and availability, including measures of hunger and undernourishment, food insecurity, and malnutrition. Progress toward the Zero Hunger goal is monitored using indicators like the Prevalence of Undernourishment and the prevalence of moderate or severe food insecurity. These indicators are widely regarded as accurately portraying the underlying phenomena of concern. There are, however, other considerations one may want to include when considering the broader food system, including the role of food access and sovereignty in the rural areas of low-income …

Hexarelin Modulates Stress Effects On Ghrelin System Activity In Growing Lambs, Krystina Pierzchała-Koziec, C. G. Scanes, Alina Gajewska

Political Science Faculty Publications and Presentations

Hexarelin modulates stress effects on ghrelin system activity in growing lambs. Folia Biologica (Kraków) 72 : 87-96. Hexarelin is a synthetic ligand for the growth hormone secretagogue receptor 1a (GHSR-1a), also known as the ghrelin receptor. Ghrelin and hexarelin have been observed to influence the HPA axis by increasing the circulating concentrations of both adrenocorticotropin and adrenal glucocorticoid in rats and humans. The aim of this study was to assess the effects of hexarelin on the ghrelin system and the growth hormone (GH)–insulin-like growth factor 1 (IGF-1) axis in lambs stressed by an emotional factor – isolation. The isolation stress …

Early Season Wheat Response To Electrochemically Precipitated Struvite In Various Soils In The Greenhouse, Tatum Simms, Kristofor R. Brye, Trenton L. Roberts, Lauren F. Greenlee

Crop, Soil and Environmental Sciences Faculty Publications and Presentations

Fertilizer-phosphorus (P) materials can be recovered from wastewater and used to supplement mined phosphate rock, where one such material is struvite [MgNH4PO4·6(H2O)]. This study aimed to compare electrochemically precipitated struvite (ECST) reclaimed from synthetic wastewater to other commercial fertilizer-P sources in cultivated soils from Arkansas [silty clay loam (AR-SiCL) and silt loam (AR-SiL)], Missouri [(silt loam; MO-SiL 1 and 2)], and Nebraska [silt loam (NE-SiL) and sandy loam (NE-SL)]. A greenhouse pot study was conducted for 60 days with unvernalized wheat (Triticum aestivum) using five fertilizer-P sources [ECST, chemically precipitated struvite (CPST), monoammonium phosphate (MAP), triple superphosphate (TSP), …

Dementia-Focused Programs In Older Adult Centers And Health Care Use Among Individuals With Dementia, Ayse Akincigil, Divya Bhagianadh, Clara J. Scher, Ceara Somerville, Caytln Coyle, Natalie E. Pope, Emily Greenfield

Health, Human Performance and Recreation Faculty Publications and Presentations

There is growing attention to community-based services for preventing adverse health care outcomes among people aging with dementia. We explored whether the availability of dementia-centered programming within older adult centers (ie, senior centers)—specifically, adult day services (ADS), social adult day centers (SADCs), memory cafes, and caregiver support—is associated with reduced hospitalization, emergency room use, and total Medicare costs for community-dwelling individuals ages 75 and older with Alzheimer's disease and related dementias (ADRD), and whether associations differ by the relative size of the local jurisdiction. We used a novel dataset that links Medicare claims data with data from an organizational census …

Management Strategies For Preventing And Recovering From Bermudagrass Winterkill, W. J. Hutchens, T. Q. Carr, A. J. Patton, C. A. Bigelow, Eric J. Deboer, J. M. Goatley, D. L. Martin, D. S. Mccall, G. L. Miller, J. S. Powlen, M. D. Richardson, M. Xiang

Horticulture Faculty Publications and Presentations

Abstract

Bermudagrass (Cynodon spp. Rich) is a warm-season grass that is widely planted throughout tropical, sub-tropical, and even temperate climates, and it generally requires fewer inputs than most cool-season turfgrasses. In recent years, the area of adaptation for bermudagrass has progressively expanded to cooler climates due to the development of more cold-tolerant cultivars. The expanded area of adaptation as well as the reduced inputs required to maintain healthy turfgrass have made bermudagrass a popular choice in areas of marginal adaptation. In these areas, the greatest threat to bermudagrass health and survivability is winterkill. This management guide seeks to describe …

The Effects Of Online Chemistry-Themed Design-Based Stem Education On Preservice Science Teachers’ Stem Awareness, Emine Sahin Topalcengiz, Burcin Acar-Sesen

Curriculum and Instruction Faculty Publications and Presentations

The study investigated the impact of Chemistry-Focused Online Science, Technology, Engineering, and Mathematics (STEM) teacher education on the awareness of STEM among preservice science teachers. A one-group pretest–posttest quasi-experimental weak design was used to determine changes in preservice teachers’ STEM awareness. During the study, a 14-week Chemistry-Focused Online STEM course was provided to preservice science teachers. As part of this course, the theoretical knowledge about STEM was explained to students, and afterward, they completed two modules. Furthermore, preservice teachers also developed their chemistry-themed STEM lesson plans at the beginning of the course, after explaining theoretical knowledge about STEM at the …

Pineapple Express: The Legality Of Introducing Cannabis Tourism To Arkansas, Chloe Tyner

Human Nutrition and Hospitality Management Undergraduate Honors Theses

This research delves into the legal aspects of introducing cannabis tourism to Arkansas. The objective of this study was to create a framework for hospitality professionals in Arkansas to understand what areas of recreational cannabis law would impact their industry should Arkansas legalize recreational cannabis. Through a document analysis comparing Arkansas and Colorado’s liquor and cannabis laws, this study investigated how both states regulate alcohol and cannabis and the legal challenges Colorado has seen since its inception of recreational cannabis sales.

Challenges to this study included a limited existing body of knowledge for cannabis tourism and the contradicting federal and …

Diseases Of Cannabis Sativa And The Epidemiology And Molecular Diversity Of Neofusicoccum Parvum, Hannah V. Zima

Graduate Theses and Dissertations

Cannabis sativa has been an underutilized agricultural resource in the United States, largely due to federal regulations distinguishing marijuana from hemp. In 2018, Congress passed a Farm Bill, which defined hemp as C. sativa containing a tetrahydrocannabinol (THC) level of no more than 0.3%. As a result, commercial hemp production began in most states in 2019, including Arkansas, and was accompanied by numerous challenges like diseases and pests. The research on the epidemiology of diseases affecting C. sativa is limited, and understanding the pathogens is in its early stages in the U.S. For this study, an initial disease survey was …

Interactive Effects Between Bluetongue Virus Infection And Insecticide Exposures In Culicoides Sonorensis, Parker Mullins

Graduate Theses and Dissertations

Culicoides biting midges are common pests around the world of humans, livestock, and wildlife. In addition to nuisance blood feeding, they are also able to transmit pathogens to their hosts like bluetongue virus (BTV) and African horse sickness virus, which can be damaging in terms of both production economics and animal welfare. In order to protect humans and livestock from biting pests like Culicoides, a wide array of interventions is recommended, but chemical insecticides and repellent use are ubiquitous. For a multitude of reasons ranging from natural weathering of applied insecticides to the increase in resistance-associated mutations and behaviors in …

Fungal Pathogen Control And Microbial Ecology: Insights From Soybean Seed Production, Samantha Rigo Segalin

Graduate Theses and Dissertations

This study evaluated the effects of planting date (PD), seed vigor, and chemical seed treatments on the plant stand and yield of two soybean cultivars with different maturity groups (MGs) across four locations in Arkansas from 2018 to 2021. Early planting in early May (early PD) led to higher plant stands and yields compared to late planting in early June (late PD). The interaction between planting date and cultivar was significant, with both cultivars showing higher plant stands on early planting dates. Seed vigor and seed treatment also significantly impacted plant populations; high-vigor seeds planted early resulted in better stands …

Use Of Herbicides Coated Onto Fertilizer And Applied Over-The-Top Of Cotton, Summer Linn

Graduate Theses and Dissertations

Cotton (Gossypium hirsutum L.) production faces numerous challenges, many related to weed management. A herbicide application method that focuses on combing resources that producers already have access to, such as herbicide-coated fertilizers, could be a practical approach for addressing late-season control of Palmer amaranth (Amaranthus palmeri S. Wats) and other problematic weed species. Two main factors would potentially impact the efficiency of utilizing this method: cotton tolerance to the application and weed control provided by the herbicide-coated fertilizers. Some considerations could affect the efficacy of these applications, such as when the treatments are applied and when they are activated by …

Instrument Not Ornament: Exploring Women’S Experiences Of Body Objectification And Belonging To An All-Women’S Mountain Biking Group In The Ozarks, Katherine Ketchum

Graduate Theses and Dissertations

Description: Despite the attention given to body positivity, body neutrality, and body appreciation, women are consistently and overwhelmingly experiencing body objectification and its harmful effects being normalized by society and internalized individually (Shorter et al., 2008). At the same time, the popularity of mountain biking for women and all-women's mountain biking groups in the Ozarks has grown exponentially in recent years, yet gender stereotypes and disparities for women remain (Irvin et al., 2021). The purpose of this study was to make meaning of (1) women’s experiences of body objectification and (2) women’s experiences belonging to an all-women's mountain biking group …

Play Therapists Attitudes, Knowledge, And Skills In Identifying Disordered Eating In Children And Adolescents., Hailey Thomas

Graduate Theses and Dissertations

The prevalence of disordered eating among children and adolescents has been steadily increasing, posing an increase in the need for treatment. Recognizing and addressing disordered eating in childhood and adolescence is critical to fostering a healthy relationship with food and body image and ensuring the overall well-being of youth. Play has long been considered an important factor in understanding children's lives and experiences and is the recommended counseling approach for children and adolescents (Landreth, 2012). Play therapy is grounded in the fundamental understanding that play is children's and adolescents' natural mode of expression, where toys are their words, and play …

Smartphone Gaming And International Students: Exploring The Experiences Of Hypercasual Gameplay For Practicing English Vocabulary And Learning About The United States Culture In Mediated Action, Se He Hwang

Graduate Theses and Dissertations

The use of smartphones in everyday settings is widespread, and people around the world use smartphones not only for making phone calls and sending text messages but also as a tool for searching for information and playing smartphone games during their free time. Since people around the world have easy access to smartphones regardless of their physical locations, smartphones can function as a tool for learning purposes, and playing games for learning purposes also supports the students to learn information in less stressful settings since playing games is predominantly for entertainment. The purpose of this qualitative phenomenological study in mediated …

Assessment Of The Drivers Of Adoption Of Climate Smart Agriculture Practices Among Field Crop Farmers In Zambia, Faindani Nyirenda

Graduate Theses and Dissertations

Climate smart agriculture (CSA) practiced has been promoted in Zambia since the 1980s to address the declining crop productivity due to increased occurrence of drought or dry spells caused by climate change. Despite considerable research indicating that CSA practices have many potential benefits such as increased yield and income, the adoption rate in southern Africa is still low especially where farmers have stable off farm income. This might be because most of the research and promotion has been directed to the main staple crop maize and other context specific impacts related to agroecological and socioeconomic heterogeneity. In this study we …

B.R. Wells Arkansas Rice Research Studies 2023, J. Hardke, X. Sha, N. Bateman

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading rice producer in the United States. The state represents 49.0% of total U.S. rice production and 49.6% of the total acres planted to rice in 2023. Rice cultural practices vary across the state and across the U.S. However, these practices are also dynamic and continue to evolve in response to changing political, environmental, and economic times. This survey was initiated in 2002 to monitor and record changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county extension agents in each of the counties in Arkansas that produce rice. Questions …

Using Short-Form Videos To Get Clinical Trial Newcomers To Sign Up: Message-Testing Experiment, Sisi Hu, Ciera E. Kirkpatrick, Namyeon Lee, Yoorim Hong, Sungkyoung Lee, Amanda Hinnant

Journalism Faculty Publications and Presentations

Background: Recruiting participants for clinical trials poses challenges. Major barriers to participation include psychological factors (eg, fear and mistrust) and logistical constraints (eg, transportation, cost, and scheduling). The strategic design of clinical trial messaging can help overcome these barriers. While strategic communication can be done through various channels (eg, recruitment advertisements), health care providers on the internet have been found to be key sources for communicating clinical trial information to US adults in the social media era.

Objective: This study aims to examine how communication source (ie, medical doctors and peers) and message framing of TikTok videos (ie, psychological and …

Consumer Perceptions Of Hemp-Fed Aquaculture, Jillian Hyink

Graduate Theses and Dissertations

Global demand for seafood has increased significantly over the past several decades and is projected to continue rising in the future. The volume of aquaculture production has also particularly increased to meet this demand in the United States and globally, offering a relatively sustainable supplement to wild fish supplies. However, conventional fish farming uses unsustainable quantities of fishmeal and fish oil as feed inputs, which raises the cost of production and introduces safety concerns associated with fish consumption. One currently underexplored potential alternative to fishmeal is hemp grain, which can provide an affordable and nutritious feed for carnivorous fish and …

The Impact Of Reactive Oxygen Species On Bactericidal Activity And Drug Resistance In Salmonella Typhimurium Upon Chlorine And Eugenol Exposure, Mohammed Aljuwayd

Graduate Theses and Dissertations

Salmonella Typhimurium (S.T) is a foodborne pathogenic bacterium which causes salmonellosis in human beings. Chicken is the most common source of S.T contamination. In chapter I, I discuss the growth of the poultry industry, the role chickens play as Salmonella reservoirs, the spread of drug-resistant strains caused by chicken husbandry and antibiotic use, and how eugenol can be used in poultry feed to decrease Salmonella infections and improve intestinal health. In chapter Ⅱ, I summarize the role of reactive oxygen species (ROS) in bactericidal activity. In chapter Ⅲ, I describe the killing mechanism of sodium hypochlorite (NaOCl) and identify the …

Bacterial Chondronecrosis With Osteomyelitis Lameness In Broiler Chickens And Its Implications For Welfare, Meat Safety, And Quality: A Review, Amanda Anthney, Anh Dang Trieu Do, Adnan A.K. Alrubaye

Poultry Science Faculty Publications and Presentations

The exponential increase in global population continues to present an ongoing challenge for livestock producers worldwide to consistently provide a safe, high-quality, and affordable source of protein for consumers. In the last 50 years, the poultry industry has spearheaded this effort thanks to focused genetic and genomic selection for feed-efficient, high-yielding broilers. However, such intense selection for productive traits, along with conventional industry farming practices, has also presented the industry with a myriad of serious issues that negatively impacted animal health, welfare, and productivity–such as woody breast and virulent diseases commonly associated with poultry farming. Bacterial chondronecrosis with osteomyelitis (BCO) …

Cobblestone Farms, Fayetteville: A Study Of A Non-Profit Teaching Farm’S Volunteer Management Programs, Ariel Scholten

Graduate Theses and Dissertations

Non-profit teaching farms (NPTFs) represent a unique intersection of mission-driven non-profits, agricultural education, and sustainable food production. Despite their growing presence, research on NPTFs, particularly regarding volunteer management, remains limited. This thesis examines volunteer management practices at Cobblestone Farms (CF), a prominent NPTF in Northwest Arkansas, focusing on its strategies to engage and retain volunteers. Through qualitative methods including semi-structured interviews with staff and volunteers, the study identifies, describes, and evaluates key components of CF's volunteer management program. Major findings reveal that CF leverages digital media, online platforms like Give Pulse, and strategic partnerships to recruit and maintain volunteers. The …