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Post-Weaning Weight Gain In Pigs Is Not Affected By Moderate Duration Transport At 20 Days Of Age, Isabel B. Walpole, Alyssa A. Smith, Kaylyn G. Rudy, Dayeon Jeon, Sarah M. Innis, Brian T. Richert, J. Scott Radcliffe, J. Alex Pasternak

Animal and Food Sciences Faculty Publications

Transportation at weaning is an integral component of the American swine industry. However, the long-term effects on growth performance have not been well characterized. Previous research suggests transportation causes weight loss immediately following weaning, but few studies have followed this effect further than 7 d post-weaning, with transport causing decreased body weight in those that have. In experiment 1, average weight pigs at 20 ± 1.3 d of age were weaned and either 1) transported for 9 hour without feed and water (TR), 2) had their feed and water restricted for 9 hour (FR), or 3) were weaned and provided …

Impact Of Feeding Different Fat Sources And Levels Of Vitamin E Isoforms To Heavy Slaughter Weight (150 Kg) Pigs: I. Carcass Characteristics And Fresh Pork Quality, Marlee Kelley, Ding Wang, Gregg Rentfrow, Merlin D. Lindemann, Ana Paula A.A. Salim, Surendranath P. Suman

Animal and Food Sciences Faculty Publications

The objective of this study was to evaluate the effect of supplementing α-tocopheryl-acetate (ATA) and γ-tocopherol (GT) vitamin E isoforms with corn oil (CO) and tallow (TW) on carcass characteristics and meat quality characteristics of pigs grown to heavy weights (150 kg). Individually fed pigs (n = 72; 36 barrows, 36 gilts) were randomly assigned to 12 dietary treatments in a 2 × 6 factorial arrangement. Fat treatments were 5% TW and 5% CO. The vitamin E treatments included 4 levels of ATA (11, 40, 100, and 200 ppm) and 2 levels of mixed tocopherols (primarily GT; 40 and 100 …

Wet Aging For 21 Days Improves Tenderness Of Beef Biceps Femoris Muscle Without Affecting Color Stability, Ana Paula A.A. Salim, Mahesh N. Nair, Yifei Wang, Anna C.V.C.S. Canto, Gregg Rentfrow, Surendranath P. Suman

Animal and Food Sciences Faculty Publications

Beef whole-muscle cuts containing biceps femoris (BF) exhibit inferior tenderness compared to cuts from the ribs and loins. The BF is a sizeable muscle in beef round, and enhancing tenderness of BF may increase the value of beef carcasses. While wet aging for 21 d improves beef tenderness, it can compromise color. Therefore, we evaluated the effects of wet aging on color and tenderness of beef BF to identify an optimal aging duration for these quality traits. The BF muscles were collected 24 h postmortem from 8 beef carcasses (n = 8), divided into equal sections, vacuum packaged, and aged …

Effects Of Ethanol And Neuropeptide-Y Signaling On Neurogenic Markers In The Hippocampus, Cassidy Taylor Leibold

Theses and Dissertations--Psychology

According to the National Survey of Drug Use and Health in 2023, 28.9 million people over the age of 12 in the United States meet criteria for an Alcohol Use Disorder (AUD). AUDs result in a range of both social and behavioral consequences, caused by damage to the central nervous system. The hippocampus is a brain structure that undergoes cellular changes in the presence of ethanol, thus causing structural and functional damage. Impairments in neurogenesis, or the production of new neurons, due to ethanol exposure result in decreased plasticity and consequently memory impairments. The mechanisms of these ethanol-induced decreases in …

Effects Of Heat Stress On The Accuracy Of An Ear-Tag Accelerometer For Monitoring Rumination And Eating Behavior In Dairy-Beef Cross Cattle Using An Automated Gold Standard, Jennifer R. Weinert-Nelson, Jessica Werner, Alayna A. Jacobs, Les Anderson, Carey A. Williams, Brittany E. Davis

Animal and Food Sciences Faculty Publications

Accelerometer-based technologies can be used for precision monitoring of feeding behaviors, but limited information is available regarding the effect of varying environmental conditions on sensor performance. The objective of this study was to determine if a commercially available ear-tag sensor (CM; CowManager SensOor, Agis Automatisering BV) could accurately quantify eating and rumination time under heat stress conditions. Data obtained from CM sensors was compared with data collected using an automated gold standard (RW; Rumiwatch System; Itin+Hoch). Automated measurements were obtained from 2 experiments in which cattle were exposed to heat stress conditions. In the principal study (experiment 1), 3,428 h …

A Comparison Of Fecal Output Determined By Total Fecal Collection Or Titanium Dioxide In Horses, Ashley L. Fowler, Morgan B. Pyles, Susan H. Hayes, Andrea D. Crum, Laurie M. Lawrence

Animal and Food Sciences Faculty Publications

Total fecal collection studies to determine digestibility of nutrients are costly and laborious. The use of externally dosed indigestible markers, such as titanium dioxide (TiO₂), to estimate digestibility using spot samples could be advantageous, but studies validating their use in horses are inadequate. Two experiments were conducted to determine if TiO₂ in fecal spot samples effectively estimated fecal output in horses. In Exp. 1, four mature horses were fed a forage-based diet (85:15 forage: concentrate) split into two equal meals with 1.75±0.03g TiO₂/kg DM (10g TiO₂) per day top-dressed on their daily ration. …

Determining The Effects Of Light, Oxygen Diffusion, And 4-Hydroxy-2-Nonenal On Redox Stability Of Beef And Pork Oxymyoglobins, Rishav Kumar, Surendranath P. Suman, Runnan Li, Morgan M. Pfeiffer, Gretchen G. Mafi, Ranjith Ramanathan

Animal and Food Sciences Faculty Publications

Retail light conditions influence consumers’ perception of meat color. Previous studies have shown that lipid and myoglobin oxidation are interrelated. 4-Hydroxy-2-nonenal (HNE)-induced beef and pork oxymyoglobin (OxyMb) oxidation is influenced by pH, temperature, and atmospheric oxygen partial pressure. However, limited knowledge is available on the effects of HNE on myoglobin redox stability under light/dark and aerobic/anaerobic (either allow or not allow atmospheric oxygen in contact with myoglobin solution) systems. Therefore, the objective was to examine the effects of light and dark storage conditions (experiment 1) as well as to compare aerobic and anaerobic systems (experiment 2) on HNEinduced beef and …

Artificial Raising On Milk Replacer And Finishing Diet Did Not Affect Color And Oxidative Stability Of Longissimus Lumborum Muscles From Polypay Ram Lambs, Koushik Mondal, Surendranath P. Suman, Katherine G. Purvis, Gregg Rentfrow, Donald G. Ely, Brittany E. Davis, Jennifer Weinert-Nelson, Yifei Wang, Ana Paula A.A. Salim

Animal and Food Sciences Faculty Publications

Lamb production traits are affected by pre-weaning management (such as artificial raising on milk replacer) and finishing (forage vs. concentrate) strategies. The objective of the current study was to examine the effects of pre-weaning management and finishing systems on the color and oxidative stability of longissimus lumborum (LL) muscles from ram lambs. Polypay ram lambs were raised conventionally with ewes (CR; n = 10) or artificially on milk replacer (AR; n = 10). After weaning at 60 d, ram lambs in AR and CR were equally divided and randomly allocated to finishing on a high-forage (50:50 forage:concentrate; HF) or a …

Effects Of Feeding Varying Levels Of Mycotoxin-Containing Corn Fines On Diet Choice And Growth Performance Of Nursery Pigs, Duncan B. Paczosa, Tyler B. Chevalier, Sunday A. Adedokun, Lan Zheng, Merlin D. Lindemann

Animal and Food Sciences Faculty Publications

Mycotoxins in feed are known to negatively affect growth and other physiological processes in pigs. Two experiments were conducted to investigate the effects of feeding diets with varying levels of mycotoxins and boron (a nutrient reported to mitigate some aspects of mycotoxicosis). Screenings from the 2020 crop year corn contained mycotoxin levels of 23,038 ppb total fumonisins (FUM), 1,446 ppb zearalenone (ZEA), and 5,032 ppb total deoxynivalenol (DON). The corn fines were added to a corn-soybean meal diet formulated to meet or exceed NRC (National Research Council. 2012. Nutrient requirements of swine. 11th Revised Edition. Washington, DC: The National Academies …

Evaluation Of Increasing Levels Of Mycotoxin-Containing Corn Fines And Mitigants On Nursery Pig Growth Performance, Duncan B. Paczosa, Tyler B. Chevalier, Sunday A. Adedokun, Lan Zheng, Merlin D. Lindemann

Animal and Food Sciences Faculty Publications

The effects of feeding corn fines (screenings) containing mycotoxin levels greater than the FDA guidance (fumonisins) and advisory (deoxynivalenol) levels were evaluated using 150 crossbred pigs (initial BW: 6.42 ± 0.06 kg; 90 barrows and 60 gilts) in an 8-wk study by adding contaminated corn fines to create six diets. The corn fines used contained prestudy analyzed mycotoxin levels of 20,334 ppb total fumonisin, 1,499 ppb zearalenone, and 5,075 ppb total deoxynivalenol. The corn fines were added into a corn-soybean meal basal diet at 0%, 20%, 40%, and 60% corn fines (Diets 1 to 4, respectively). Diet 5 was created …

Factors Of Willingness To Pay For Equine Veterinary Services, Olivia Gibson, Shuoli Zhao, C. Jill Stowe

Animal and Food Sciences Faculty Publications

This study estimates correlates of willingness-to-pay (WTP) for routine, elective, and urgent equine veterinary services in the United States. Through a nationwide online survey of US horse owners aged 18 and older, a payment card approach was utilized to elicit WTP for annual vaccinations, a lameness exam, and emergency colic surgery. Based on the results from an interval regression model, we found that financial capacity, income level, and the number of horses owned were significant predictors of WTP across all three service types. These findings have implications for equine veterinary practice management and client communication regarding treatment costs.

Resilience After Prenatal Substance Exposure: Exploring The Role Of Cumulative And Specific Protective Factors In Predicting Toddlerhood Temperament Profiles, Anjeli Elkins

Theses and Dissertations--Psychology

Objective

Prenatal exposure to common substances, including nicotine, marijuana, cocaine, methamphetamine, opiates, and alcohol, has been linked to a wide range of psychiatric disorders and neurodevelopmental impairments. Identifying protective factors that may improve temperament profiles in toddlers who have experienced prenatal substance exposure may protect against these adverse outcomes and is crucial for developing targeted early interventions.

Methods

Participants (n=92; Mage = 28.7 years; 47.0% White) were biological mothers of toddlers (Mage = 22.6 months) with prenatal substance exposure. Mothers responded to an online survey that gathered information on substance use during pregnancy, proposed perinatal protective factors, and child temperament. …

Responses To Tobacco Use Screening And Tobacco Cessation Assistance Offers Among Rural And Ubran Cancer Survivors At An Nci-Designated Comprehensive Cancer, Abigayle Feather

Theses and Dissertations--Psychology

Smoking after cancer diagnosis is associated with poor outcomes while smoking cessation can improve quality of life and promote survival. Although there are calls for equitable tobacco treatment delivery in cancer and other healthcare settings, disparities in tobacco-related disease burden persist. In the context of an outpatient cancer center’s population-based tobacco treatment program, this study examines the association between cancer survivors’ rural and Appalachian residence and 1) current tobacco use status, 2) decision to decline cessation assistance, and 3) reason for declining assistance. A cross-sectional, retrospective analysis was conducted using electronic health record data from 16,839 adults (64.04% female, 88.49% …

Multidimensional Health Outcomes In Lgbtq+ Older Adults In The United States: Individual And Community-Level Protective Factors, Emily P. Lapidus

Theses and Dissertations--Psychology

Despite a lifetime of systematic barriers, LGBTQ+ individuals age into late adulthood, likely due to various protective factors. Guided by the Iridescent Life Course Framework (ILCF; Fredriksen-Goldsen & Muraco, 2019), I analyzed unique protective factors at two levels: (1) individual psychological factors (i.e., resilience, identity management) and (2) community-level factors (i.e., LGBTQ+ community connectedness, social support). Health was operationalized as mental health, physical health, and health-promoting behaviors. The present study accounted for covariates (i.e., financial barriers to healthcare, felt subjective age discrepancy, lifetime discrimination). I hypothesized that both stronger individual and community factors would be associated with better physical and …

"We Talk About It At The Dinner Table": Parent Discussions Of Identity And Politics In Diverse Adoptive Families In The United States, Abigail L. Moore

Theses and Dissertations--Psychology

Parents discussing identity and politics with their diverse adolescents can be protective against experiences of political stress and negative outcomes (Anderson, 2023). Identity discrepancies between parents and adolescents may complicate these conversations (McCrimmon et al., 2024). However, this research often only focuses on only one identity (e.g., race or gender; Mendez, 2022). Because negative political climates affect multiple identities simultaneously (Kassing et al., 2021), the current study explores political conversations in diverse, adoptive family contexts with varying (un)shared identities. Through reflexive thematic analysis (Braun & Clarke, 2021), 7 major themes were developed. Results suggest that identity discrepancies may underlie a …

Associations Between Queer Parent Family Socialization And Adolescent Outcomes Among Diverse Lgbtq+ Parent Families In The U.S., Nita U. Kulkarni

Theses and Dissertations--Psychology

Queer parent family socialization refers to the way LGBTQ+ parents talk with their children about what it means to be queer in society, how to handle discrimination, and ways to have pride in their family’s identity. This construct has been linked with positive well-being outcomes in children, and this study used a strengths-based, mixed- methods framework informed by Minority Stress Theory and intersectionality to examine how queer parent family socialization related to several adolescent well-being outcomes, namely internalizing behaviors, social competence, and adaptive coping. Participants recruited across two projects were 191 queer parents with an adolescent and 114 adolescents with …

Living With Flying Colors: Associations Among Lgbtq+ Identity, Religiosity, Spirituality, Community, And Overall Well-Being Among Lgbtq+ Older Adults, Madison T. Diomede

Theses and Dissertations--Psychology

Experiences of discrimination and prejudice place LGBTQ+ individuals in older adulthood (i.e., 55 years old and older) at risk for poor overall well-being. This risk can be especially salient in the Southern and Midwestern U.S., where LGBTQ+ individuals enjoy fewer legal protections than in the Northeast and Western regions of the U.S. In defiance of these odds, LGBTQ+ individuals in older adulthood cultivate overall well-being through psychological-level constructs, like LGBTQ+ identity affirmation, and community-level constructs, LGBTQ+ community connection. Yet, little research has examined these avenues of strength among LGBTQ+ individuals in older adulthood. Guided by Iridescent Life Course Theory and …

Weighted Family History Density Of Substance Use: Influence On Participant Substance Use Onset, Escalation, And Duration, Carleigh A. Litteral

Theses and Dissertations--Psychology

Substance use disorders impose a staggering toll on the United States (U.S.), straining healthcare systems, destabilizing communities, and profoundly impacting both individuals and families. Approximately one in six Americans aged 12 and older had a past-year substance use disorder in 2022 (Key Substance Use, 2022), and nearly one-third of adults experience a substance use disorder in their lifetime (Wu, 2010), contributing to an economic burden exceeding $400 billion annually (National Drug Threat Assessment, 2011). Family history of substance use disorders is a key predictor of vulnerability, with individuals who have affected relatives being 2–8 times more …

Exploring The Effects Of Transcranial Direct Current Stimulation Of The Right Inferior Frontal Gyrus On Inhibitory Control In Posttraumatic Stress Disorder, Colton Rippey

Theses and Dissertations--Psychology

Background: The right inferior frontal gyrus (rIFG) is implicated in stop signal reaction time (SSRT) performance – a common measure of inhibitory control – and emotional expression and control. Individuals with posttraumatic stress disorder (PTSD) exhibit poorer stop SSRT performance, which is associated with rIFG hypoactivity. Neuromodulation of the rIFG with transcranial direct current stimulation (tDCS) can significantly improve inhibitory control and reduce fearful responding to threatening stimuli. Research has yet to test the effects of multifocal tDCS targeting the rIFG on inhibitory control or emotional reactivity in individuals with PTSD.

Methods: The current study aims to examine the impact …

Relationship Between Anticipated Stress And Individuals’ Health-Related Behaviors, Julie Parsons

Theses and Dissertations--Psychology

Prior work in assessing the relationship between stress and health behaviors has identified the complex and multi-directional nature of these relationships. However, minimal work has assessed the possible relationships between stress anticipation and health behaviors such as diet, physical activity, and sleep outcomes in individuals. This work seeks to address this gap by conducting a daily diary study assessing within-person associations between stress anticipation and health behaviors over the course of a week. We hypothesized that daily stress anticipation would be negatively associated with dietary scores, physical activity engagement reports, sleep quality, and sleep duration while being positively correlated with …

Interparental Conflict And Sibling Relationship Quality In Emerging Adulthood: An Emotional Security Perspective, Courtlyn A. Fields

Theses and Dissertations--Psychology

Sibling relationships are among the earliest lifelong relationships and have been found to be protective against family dysfunction and positive adjustment outcomes. Yet research on sibling relationships remains limited. The current study aims to expand understanding of sibling relationship quality in emerging adulthood through the application of Emotional Security Theory (EST). EST provides a framework for understanding how adult sibling relationships may be impacted by childhood experiences of destructive interparental conflict. A sample of 1222 undergraduates with siblings completed an online survey. Participants retrospectively reported on interparental conflict and emotional security in childhood, and reported on their current emotion regulation, …

Global Sleep Quality, Emotion Regulation Difficulties, And Ptsd Symptom Severity In Trauma-Exposed College Women, Grace M. Seymour

Theses and Dissertations--Psychology

Sleep problems are common among college women and may contribute to PTSD symptoms. Those with emotion regulation difficulties may have increased difficulty managing distress worsened by poor sleep, though it is unclear which specific facets of emotion regulation are most relevant. This study examined interactions between sleep quality and facets of emotion regulation difficulties on PTSD symptoms among college women (N = 1,037) using self-report measures: the Pittsburgh Sleep Quality Index (PSQI), PTSD Checklist for DSM-5 (PCL-5), and Difficulties in Emotion Regulation Scale (DERS-18). Two significant interactions emerged. Sleep disturbance interacted with difficulties engaging in goal-directed behavior (b …

Putative Mechanisms Of Personality Change In Treatment, Hannah Croom

Theses and Dissertations--Psychology

BPD Compass was designed to engage the BPD-relevant traits from the Alternative Model of Personality Disorders in the DSM-5 by targeting putative mechanisms associated with these personality domains: aversive reactivity to engage negative affectivity, attachment insecurity to engage antagonism, and self-efficacy to engage disinhibition. The goal of the present study was to test the associations between putative mechanisms and respective personality traits. We used multilevel structural equation modeling to test if personality domains and putative mechanisms changed in treatment, if changes in putative mechanism were associated with changes in respective personality domain, and if within-person changes in putative mechanisms predicted …

Why Are Women Tired? Examining Sex-Dependent Effects Of Behavioral Rhythms On Perceived Sleepiness, Maricel Schuler

Theses and Dissertations--Psychology

Sleep complaints in women emerge at menarche and coincide with reproductive hormonal fluctuations throughout the monthly menstrual cycle. To our knowledge, we are the first study (N = 44) to utilize a validated algorithm that uses actigraphy-derived light and activity data in a novel approach to estimate circadian phase, referred here as the photobehavioral phase. We hypothesize that women will have earlier photobehavioral phases, larger phase angles, poorer perceived sleep quality, and greater sleepiness compared to men. In addition, we hypothesize that the perimenstrual phase will be associated with poorer sleep within a subsample of women (N = 15). Contrary …

The Effects Of Plx 3397 On Fentanyl Escalation In Male And Female Sprague-Dawley Rats, Jakob Shaykin

Theses and Dissertations--Psychology

Purpose: A hallmark characteristic of opioid use disorder (OUD) is a persons’ ‘loss of control’, which leads to the compulsion to seek and obtain opioids, resulting in increased consumption. This phenomenon is known as ‘escalation of drug intake’. Chronic opioid use causes microglial reactivity and subsequent release of proinflammatory cytokines leading to neuroinflammation, weakening one’s executive control over drug taking and ultimately leading to greater use. Previous research in our laboratory has explored heterogeneity of fentanyl intake in extended access (6-hr) sessions and identified distinct endophenotypes of fentanyl intake. Moreover, we have observed a positive correlation between Treml1 expression …

Examining Values In The Treatment Of Borderline Personality Disorder: A Single-Case Experimental Design, Nicole Stumpp

Theses and Dissertations--Psychology

Borderline personality disorder impacts roughly 1.6% of the general population yet only a quarter of people with BPD are able to access treatment. Understanding the mechanisms that promote behavior change in treatment is crucial for improving care for this population. Experiential avoidance has been linked to risky behaviors, a prevalent and debilitating symptom observed in BPD. Values identification may be a fruitful avenue for engaging experiential avoidance in treatment. The goal of the present study is to understand the unique and combined effects of values identification and behavior change skills (i.e., opposite actions, exposure) on experiential avoidance (target), maladaptive behavior …

Randomized Controlled Trial Of A Single-Session Mechanism-Focused Intervention For Suicidal Thoughts And Behaviors, Martina Fruhbauerova

Theses and Dissertations--Psychology

Suicide remains a critical public health concern, with increasing rates and millions experiencing suicidal ideation annually. Although evidence-based treatments exist, many are time-intensive, underutilized, and often inaccessible to high-risk individuals, especially those recently discharged from inpatient psychiatric care. Brief, scalable interventions targeting core psychological mechanisms implicated in suicidal thoughts and behaviors (STBs) are needed. This study evaluated a novel Single Session Mechanism-Focused Intervention (SSMFI) designed to reduce hopelessness and negative perceptions of social relatedness among adults hospitalized for STBs. In a randomized controlled trial (N = 38) conducted on two inpatient psychiatric units, participants were assigned to either the SSMFI …

Interplay Between Computational Techniques And Quantum Theory: Advancing Quantum Chaos And Quantum Error Correction, Refaat Ismail

Theses and Dissertations--Physics and Astronomy

This dissertation investigates computational techniques addressing critical problems arising within quantum chaos and quantum error correction (QEC). First, we investigate quantum dynamics via the Lanczos algorithm, establishing how its computational features — branching patterns, convergence, and complexity saturation — relate to physical properties like spectral statistics and operator matrix elements. We derive a formula connecting Lanczos coefficients to spectral densities for two-branched Lanczos sequences, revealing how branching patterns encode level repulsion—a hallmark of quantum chaos. Furthermore, we develop an analytic framework predicting Krylov complexity saturation from static system properties alone. Specifically, we decompose the saturation value into a spectral density-dependent …

Laser–Assisted Free–Free (Laff) Electron Scattering: An Elastic Angular Distribution In Argon And The Use Of A Novel Pulsed-Laser Multipass System In Laff Experiments, Charles M. Weaver

Theses and Dissertations--Physics and Astronomy

Laser–assisted free–free experiments investigate the emission or absorption of photons when an electron scatters from an atom in the presence of a laser field.

We measured the relative differential cross sections for 350 eV electrons scattered by an argon target in the presence of 1.17 eV photons from a Nd:YAG laser. The angular distribution for elastically scattered 350 eV electrons was measured over scattering angles from 4◦ to 80◦. This distribution exhibits a pronounced maximum near 47◦ and is symmetric about this angle, as predicted by a Kroll–Watson approximation (KWA) calculation for the experimental kinematics. These measurements directly test a …

Quantum Hall Phases In Monolayer Graphene, Jincheng An

Theses and Dissertations--Physics and Astronomy

In the presence of a perpendicular magnetic field, monolayer graphene at and near charge neutrality forms a quantum Hall ferromagnet—a correlated electronic state where the interplay of interactions, spin, and valley degrees of freedom leads to spontaneous symmetry breaking. While the dominant Coulomb interaction has $SU(4)$ symmetry, the ground state is ultimately determined by subdominant terms: residual lattice-scale anisotropic interactions, Zeeman, and sublattice couplings. Relaxing the ultra-short-range limit of anisotropic interactions unveils diverse symmetry-breaking phases in both integer and fractional quantum Hall regimes. Haldane pseudopotentials, which quantify interactions between particle pairs with fixed relative angular momentum, provide a readily parameterizable …