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2013

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The Role Of A7 Nicotine Acetylcholine Receptors In Lung Injury And Repair., Glenn Vicary May 2013

The Role Of A7 Nicotine Acetylcholine Receptors In Lung Injury And Repair., Glenn Vicary

Electronic Theses and Dissertations

Tobacco-related chronic lung diseases are characterized by alterations in lung architecture, leading to decreased lung function and airflow limitation. Knowledge of the exact mechanisms involved in tobacco-induced tissue remodeling and inflammation remains incomplete. We hypothesized that nicotine, a component of tobacco, stimulates the expression of extracellular matrices leading to relative changes in lung matrix composition, which may affect immune cells entering the lung during inflammation. We found that nicotine stimulated collagen type I mRNA and protein expression in a dose- and time-dependent manner in primary lung fibroblasts. The stimulatory effect of nicotine was inhibited in lung fibroblasts harvested from mice …

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Personal Factors That Influence Meaning And Prioritizatin In Work-Nonwork Roles, Lindsay Ware Benitez May 2013

Personal Factors That Influence Meaning And Prioritizatin In Work-Nonwork Roles, Lindsay Ware Benitez

Masters Theses and Doctoral Dissertations

The importance an individual places on one role over another is captured by a person’s identity salience, which can affect how work and nonwork roles are viewed and how one allocates time and resources to these roles. Within the literature there is a need to further understand what personal factors may influence the development of a person’s identity salience and ultimately contribute to the choices people make surrounding work and nonwork domains. The present study was designed to assess the impact of four higher order values that contribute to a person’s identity salience. Also examined was the potential impact of …

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Distribution, Prevalence, And Genetic Analysis Of Panulirus Argus Virus 1 (Pav1) From The Caribbean Sea, Jessica Moss, Donald C. Behringer Jr., Jeffrey D. Shields, Antonio Baeza, Alfonso Aguilar-Perera, Phillippe G. Bush, Clement Dromer, Alejandro Herrera-Moreno, Lester Gittens, Thomas R. Matthews, Michael R. Mccord, Michelle T. Schärer, Lionel Reynal, Nathanial Truelove, Mark J. Butler Iv May 2013

Distribution, Prevalence, And Genetic Analysis Of Panulirus Argus Virus 1 (Pav1) From The Caribbean Sea, Jessica Moss, Donald C. Behringer Jr., Jeffrey D. Shields, Antonio Baeza, Alfonso Aguilar-Perera, Phillippe G. Bush, Clement Dromer, Alejandro Herrera-Moreno, Lester Gittens, Thomas R. Matthews, Michael R. Mccord, Michelle T. Schärer, Lionel Reynal, Nathanial Truelove, Mark J. Butler Iv

Biological Sciences Faculty Publications

The pathogenic virus Panulirus argus virus 1 (PaV1) was first discovered in Caribbean spiny lobsters Panulirus argus from the Florida Keys (USA) in 1999 and has since been reported in Belize, Mexico, and Cuba; its distribution in the wider Caribbean is unknown. We collected tissue samples from adult spiny lobsters from 30 locations in 14 countries bordering the Caribbean Sea and used molecular diagnostics to assay for the presence of PaV1. PaV1 occurred primarily in the northern areas of the Caribbean, where its prevalence was highest. The virus was not found in lobsters from the southeastern Caribbean, and its prevalence …

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How Care Demands, Caregiving Appraisal And Coping Affect Self-Care Management Of Informal Caregivers Of Persons With Dementia., Xiaorong Wang May 2013

How Care Demands, Caregiving Appraisal And Coping Affect Self-Care Management Of Informal Caregivers Of Persons With Dementia., Xiaorong Wang

Electronic Theses and Dissertations

BACKGROUND: Caring for a person with Alzheimer’s disease and related dementia (ADRD) is very stressful. Chronic stress which increases the risk for the development of disease and chronic illness is prevalent in caregivers of persons with ADRD. However, how caregiving affects self-care management of caregivers of persons with ADRD has not been well defined. PURPOSE: The purpose of this study is to examine relationships among care demands, caregiving appraisal, coping and caregiver self-care management and to investigate whether care demands, caregiving appraisal and coping are predictors of caregiver self-care management. METHODS: A cross-sectional study design was conducted among 45 primary …

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Generalized Estimating Equation Based Zero-Inflated Models With Application To Examining The Relationship Between Dental Caries And Fluoride Exposures., Sheng Xu May 2013

Generalized Estimating Equation Based Zero-Inflated Models With Application To Examining The Relationship Between Dental Caries And Fluoride Exposures., Sheng Xu

Electronic Theses and Dissertations

In the study of dental caries, the number of caries is frequently characterized by over-dispersion and excessive zeros. In addition, the numbers of caries from the same subject are correlated. Zero-Inflated (ZI) regression models, such as ZI-Poisson (ZIP), ZI-Negative Binomial (ZINB), have been developed to account for the excessive zeros in count data. However, the existing zero-inflated models assume that the counts are uncorrelated. On the other hand, Generalized Estimating Equations (GEE) have been developed in the literature to estimate the parameters while accounting for the correlations of observations from the same subject. However, the GEE models incorporating excessive zero …

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Pacap : A Novel Neuropeptide For Pituitary Gonadotroph Maturation, Function And Regulation., Rongqiang Yang May 2013

Pacap : A Novel Neuropeptide For Pituitary Gonadotroph Maturation, Function And Regulation., Rongqiang Yang

Electronic Theses and Dissertations

Pituitary adenylate cyclase-activating polypeptide (PACAP) is a 38-amino acid C-terminally a-amidated peptide that was first isolated from ovine hypothalamic extracts on the basis of its ability to stimulate cAMP production in anterior pituitary cells. As a member of the vasoactive intestinal polypeptide (VIP)/secretin/growth hormone-releasing hormone/glucagon superfamily, PACAP has been well conserved during evolution from sea squirt to humans, which suggests important biological functions. Two types of PACAP receptors have been characterized. PAC1-R is the only one PACAP-specific receptor with high affinity. Although PACAP was first found in hypothalamus, it is also expressed in the pituitary. In the research to be …

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Biomodeling Of Pancreatic Tumor Mass., Justin Lee Howell May 2013

Biomodeling Of Pancreatic Tumor Mass., Justin Lee Howell

Electronic Theses and Dissertations

Pancreatic adenocarcinoma is the fourth leading cause of cancer death in the United States. It is identified by its rapid, invasive progression with a profound resistance to treatments such as chemotherapy. Unfortunately, there is a lack of information on how to effectively inhibit and control the rapid growth of pancreatic tumors, as well as limited information for diagnostics. With current methods, pancreatic cancer will continue to prevail as a leading cause of cancer death. We propose to study the complexity of pancreatic tumors with a systematic and analytical approach. Cancer is an abnormal growth of tissue caused by uncontrolled cell …

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Tennessee Farm Bureau News - May 2013, Tennessee Farm Bureau Federation May 2013

Tennessee Farm Bureau News - May 2013, Tennessee Farm Bureau Federation

Tennessee Farm Bureau News

No abstract provided.

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Phosphorus Retention And Transformation In Floodplain Forests Of The Southeastern United States, John A. Navaratnam May 2013

Phosphorus Retention And Transformation In Floodplain Forests Of The Southeastern United States, John A. Navaratnam

Graduate Theses, Dissertations, and Problem Reports (ETD)

Phosphorus (P) commonly limits productivity in freshwater ecosystems; thus, increased P loading, either in dissolved (DP) or particulate (PP) form, can lead to eutrophication. The central goal of my dissertation research is to understand these biogeochemical mechanisms of P retention and transformation in rivers and streams and their associated FFs in the Atlantic Coastal Plain of the southeastern US (VA, NC, SC, GA).;To assess the nature of P removal during flooding events, I conducted a detailed study of DP and PP forms (inorganic, Pi and organic, Po) in waters from alluvial (AL) and blackwater (BW) FFs. At each FF site, …

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Mechanisms Of Cadmium Tolerance In Populus, Brahma Reddy Induri May 2013

Mechanisms Of Cadmium Tolerance In Populus, Brahma Reddy Induri

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cadmium (Cd), a known carcinogen and one of the leading heavy metal pollutants on a global scale, is released to the atmosphere through various industrial processes such as smelting and mining and other applications including manufacture of batteries and phosphate fertilizers. It causes many deleterious effects in plants, and is harmful to humans through its entry into the food chain. Traditional methods of remediating Cd-contaminated soils, such as excavation and land-filling, are expensive and disturb the natural topography. The emerging method of phytoremediation in which plants are employed to remediate contaminated soils has become increasingly popular because of its cost …

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Adult Characteristics Associated With Gender-Typed Toy Ratings, Rachel R. Stoiko May 2013

Adult Characteristics Associated With Gender-Typed Toy Ratings, Rachel R. Stoiko

Graduate Theses, Dissertations, and Problem Reports (ETD)

The toys with which children play shape their development in several domains (Trawick-Smith, Russell, & Swaminathan, 2011). Exclusive or primary play with gender-typed toys may limit children's development, because toys considered appropriate for boys, girls, or both have different characteristics (Blakemore & Centers, 2005; Serbin & Connor, 1979). Especially in infancy and early childhood, children's toy play is affected by adults (parent and nonparent), who may differentially provide access to and/or reinforce play with different toys (Kane, 2006). The variability in adults' attitudes regarding the gender-appropriateness of toys is not well-understood.;The purpose of this study was to examine the relations …

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Abelson Kinase Based Regulation Of Tumor Cell Invasion In Hnscc, Karen E. Hayes May 2013

Abelson Kinase Based Regulation Of Tumor Cell Invasion In Hnscc, Karen E. Hayes

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nearly 40,000 new cases of head and neck squamous cell carcinoma (HNSCC) are annually diagnosed in the United States. The current standard of care for HNSCC patients consists of chemoradiation often combined with targeted therapeutic agents. However, the five-year survival rate for patients that relapse is < 50%. Patients with recurrent or metastatic disease have a very poor prognosis and typical survive < 12 months due to therapeutic resistance and loco-regional invasive spread. HNSCC invasion is mediated in part by lamellipodia and invadopodia, two actin-based structures responsible for facilitating invasive movement. Key signaling pathways that govern lamellipodia and invadopodia production are hyperactivated or overexpressed in HNSCC, including EGFR, Src, Erk 1/2, and cortactin. The overall goal of this dissertation is to determine how these signaling components regulate lamellipodia and invadopodia production and function in HNSCC. Three studies were completed that address these issues. Study One reveals an anti-invasive function for Abl in invadopodia regulation in HNSCC, results that are contrary to the pro-invasive influence Abl has in breast and other cancer types. Study Two establishes a fundamental role for Src has in HNSCC invasion and metastasis through the use of the dual Src/Abl inhibitor saracatinib. In Study Three we determine the expression and activation levels of Erk 1/2 in HNSCC patient samples and the role of Erk 1/2 cortactin phosphorylation in HNSCC adhesion, migration and lamellipodia persistence. Collectively these studies shed new light into the fundamental mechanisms utilized during various steps in HNSCC invasion, providing the potential for refinement and development of new avenues for therapeutic intervention.

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Characterization Of Coconut Oil And Cla Induced Lipolysis, Siri Manasa Ippagunta May 2013

Characterization Of Coconut Oil And Cla Induced Lipolysis, Siri Manasa Ippagunta

Graduate Theses, Dissertations, and Problem Reports (ETD)

Obesity is a main health concern and leads to many other health complications. Conjugated linoleic acid (CLA) has been shown to cause a reduction in obesity in several species. CLAinduced body fat loss is enhanced when mice are fed coconut oil (CO). The objectives were to determine if the CLA-induced lipolysis in different oil source-fed mice was time-dependent and to determine the effect of cell signaling inhibitors on CO+CLA-induced lipolysis. Study 1: Male mice (ICR; n=80; 3wk) were fed 7% soybean oil (SO) or CO diets for 6wk and then supplemented with 0 or 0.5% CLA for 3, 7, 10 …

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Characterization Of Atmospheric Particulate Matter In Mountaintop Mining And Non-Mining Areas In West Virginia With Known Health Differences, Laura M. Kurth May 2013

Characterization Of Atmospheric Particulate Matter In Mountaintop Mining And Non-Mining Areas In West Virginia With Known Health Differences, Laura M. Kurth

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction: Mortality and morbidity rates in the Appalachian region are higher than in the national population. People who live in Appalachian areas where coal mining is prominent have increased health problems compared to people in non-mining areas of Appalachia. Health disparities remain higher in mining areas even after adjusting for lifestyle and demographic effects illustrating that additional factors, such as environmental influences, are associated with adverse health outcomes. Coal mines and coal mining activities result in the production of atmospheric particulate matter (PM), which is associated with environmental and human health effects. Environmental studies of air and water quality in …

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Modeling Water Temperatures And Brook Trout (Salvelinus Fontinalis) Growth Potential Within A Complex Appalachian Riverscape, Michael Tincher May 2013

Modeling Water Temperatures And Brook Trout (Salvelinus Fontinalis) Growth Potential Within A Complex Appalachian Riverscape, Michael Tincher

Graduate Theses, Dissertations, and Problem Reports (ETD)

Climate change is expected to cause air temperatures to increase 2-5°C in the Appalachians throughout the 21st century. These air temperature increases will cause water temperatures to increase, and may negatively effect cold and cool water fish species. Brook trout are an important game fish and highly vulnerable species in West Virginia. The primary objectives of this study were to (1) construct and validate models relating stream water temperature to long6term climate data for 18 sites and (2) determine brook trout growth potential within sites of the upper Shavers Fork watershed that differ in water temperature regimes. Multiple linear regression …

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Parent Civic Behavior And Observed Civic Messages: Associations With Adolescent Civic Behavior And Prioritization, Benjamin J. Oosterhoff May 2013

Parent Civic Behavior And Observed Civic Messages: Associations With Adolescent Civic Behavior And Prioritization, Benjamin J. Oosterhoff

Graduate Theses, Dissertations, and Problem Reports (ETD)

The current study employed observational and multi-informant survey methodology to explore associations among parents' civic behaviors, observed parent and adolescent messages about civic obligation, and adolescents' civic behavior and prioritization (should) judgments. A sample of 160 adolescents (Mage = 14.42, range = 12-18) and their parents (144 mothers and 52 fathers), participated in video-recorded, structured, dyadic interaction tasks in which they discussed citizenship and civic duty. Parents and adolescents also completed questionnaires assessing civic behavior and civic prioritization judgments. Within distinct civic activities, parents' report of civic behavior was positively associated with adolescents' report of civic behavior and prioritization judgments. …

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A Multidimensional Investigation Of Sexuality In Older Adults Within A Successful Aging Model, Allyson S. Graf May 2013

A Multidimensional Investigation Of Sexuality In Older Adults Within A Successful Aging Model, Allyson S. Graf

Graduate Theses, Dissertations, and Problem Reports (ETD)

Sexual well-being in later life has traditionally been evaluated in relation to age-related physical limitations and sexual dysfunction. This study developed a multidimensional model of sexual well-being by investigating sexual interest, sexual attitudes (general and age-specific), and age-specific sexual knowledge in relation to more commonly-used indicators of sexual well-being (e.g., frequency and sexual satisfaction). Using a racially-diverse, U.S. sample of adults (N = 367, Mage = 54.40), structural equation modeling was used to test these associations (AGFI = .967; TLI = .994; and RMSEA = .031). Sexual interest (beta = .53), attitudes (beta = -.11 and .17), and knowledge (beta …

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A Systematic Study Of Enzyme-Nanomaterial Interactions For Application In Active Surface Decontamination, Alan Steven Campbell May 2013

A Systematic Study Of Enzyme-Nanomaterial Interactions For Application In Active Surface Decontamination, Alan Steven Campbell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Enzymes are a catalytic class of proteins that possess high specificity, selectivity and biocompatibility, which makes them ideal for multiple applications in industrial production and biotechnology. However, the use of enzymes in such applications is limited due to their low operational stability and increased cost attributed to difficulty of purification and reuse. Immobilization of enzymes onto nano-sized solid supports has emerged as a potential solution to these shortcomings with a trade-off of a percentage of activity loss upon immobilization. Herein, a comprehensive study of enzyme immobilization techniques with emphasis on active-surface decontamination applications is presented.;In Chapter 1, an overview of …

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Evolutions In Class Visibility, Morality, And Representation In Chilean Teleseries: From Military Regime To Current Moment, Sadie Smeck May 2013

Evolutions In Class Visibility, Morality, And Representation In Chilean Teleseries: From Military Regime To Current Moment, Sadie Smeck

Undergraduate Theses—Unrestricted

This work begins by exploring the concepts of class and class-consciousness as they are represented in the Chilean teleserie, Pobre Rico (2012-13), examining elements of class-marked aesthetics, linguistics and spaces in Santiago as these are manifested in the television program. The work will question how these representations relate to national, urban realities, and problematize the manner in which they at times reflect, exaggerate and/or misrepresent particular attitudes, dynamics and realities of class stratification in present-day, urban Chilean society. The work then examines how representations of class in Chilean television and media have evolved in the past three decades, since the …

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Secrets Of Their Success: A Multiple Case Study Of Mathematically Proficient Homeschool Graduates, Betty Cardinale May 2013

Secrets Of Their Success: A Multiple Case Study Of Mathematically Proficient Homeschool Graduates, Betty Cardinale

Doctoral Dissertations and Projects

The purpose of this multiple case study was to explain how mathematically proficient homeschool graduates acquired their proficiency. Bronfenbrenner's (1979, 1999) ecological and Process-Person-Context-Time (PPCT) models were used as theoretical frameworks to analyze the development of the graduates in the homeschool environment. The National Research Council's (NRC) Five Strands of Mathematical Proficiency (Kilpatrick, Swafford, & Findell, 2001) was used as a conceptual framework. I collected four types of data: (a) surveys; (b) National Assessment of Educational Progress; (c) Mathematical Self-Efficacy Scale scores; and (d) interviews. These data items were analyzed with explanation building, a special case of pattern-matching logic. Many …

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Rehabilitation Of The Uplb Sewage Treatment Plant: An Evaluation Study., Alexander Generoso P. Castro May 2013

Rehabilitation Of The Uplb Sewage Treatment Plant: An Evaluation Study., Alexander Generoso P. Castro

Undergraduate Theses

The UPLB Sewage Treatment Plant has not been operated since 2002, resulting to the discharge of untreated wastewater from UPLB to the Molawin Creek. To remedy this, a committee has been formed with the goal of rehabilitating the STP. The study aims to evaluate the rehabilitation of the STP. The evaluation is performed by determining the wastewater parameters and the projected wastewater flowrates for 5, 10, 20 and 30 years and then checking the capacity and treatment adequacy of the existing STP for the given time frame. Analysis of wastewater samples (collected5using grab sampling) shows that the wastewater constituted of …

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Evaluating Integrated Weed Management: Russian Knapweed Control With Goat Grazing And Aminopyralid, Clarke G. Alder May 2013

Evaluating Integrated Weed Management: Russian Knapweed Control With Goat Grazing And Aminopyralid, Clarke G. Alder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Invasion of natural communities by introduced plants is considered one of the biggest threats to biodiversity. Weeds in rangelands cause an estimated loss of $2 billion per year in the United States. These costs include losses in forage quality and yield, grazing interference, animal poisoning, lowering land values, depleting soil water and resources available to native plants, increasing costs of managing livestock, and impacts on wildlife habitat and forage. Integrated weed management (IWM) is a way for land managers such as farmers, ranchers, and government agencies to control invasive weeds. IWM uses several different control methods working in conjunction to …

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Ovarian Modifications In Mice Exposed To Whole-Body Irradiation., Jacob Marion Poole May 2013

Ovarian Modifications In Mice Exposed To Whole-Body Irradiation., Jacob Marion Poole

Undergraduate Honors Theses

This experiment was designed to determine the involvement of varying levels of whole-body irradiation on ovarian follicular and corpora luteal development in mice. Previous research has indicated reduced counts of ovarian follicles and corpora lutea in mice flown in space. These differences may be the result of microgravity, increased exposure to radiation, or some combination of both. Fifty-six mice were divided into three groups (apocynin-treated, nox2 knockout, and wild-type control) before exposure to 0 Gy, 0.5 Gy, or 2.0 Gy radiation. The tissues were harvested, preserved, run through the appropriate paraffin embedding procedures, serially sectioned, mounted on microscope slides, and …

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This Is Not Bootcamp: Radicalizing The Teacher Preparation Seminar, Casie J. Fedukovich May 2013

This Is Not Bootcamp: Radicalizing The Teacher Preparation Seminar, Casie J. Fedukovich

Language Arts Journal of Michigan

No abstract provided.

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Response Of Breeding Birds To Forest Disturbance In The Arkansas Ozarks: Impacts Of Uneven-Aged Management, Ice Damage, And Woodland Restoration, Maureen Mcclung May 2013

Response Of Breeding Birds To Forest Disturbance In The Arkansas Ozarks: Impacts Of Uneven-Aged Management, Ice Damage, And Woodland Restoration, Maureen Mcclung

Graduate Theses and Dissertations

Forests of the Ozarks are important breeding grounds for many bird species, each with specific habitat requirements. Natural and anthropogenic disturbance events can alter vegetational structure of forests, thereby influencing communities of breeding birds. The objectives of my study were to examine the response of breeding birds and their habitat to three types of forest disturbance: (1) uneven-aged management, (2) ice damage, and (3) woodland restoration. Avian and vegetation surveys were conducted during the 2008, 2009, and 2010 breeding seasons (May-June) in the Ozark National Forest, Arkansas. Each site was surveyed for birds four times a season using fixed-radius point …

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Physio-Chemical And Sensory Properties Of A Nutrient-Fortified Extruded Product, Tajudini Lassissi Akande May 2013

Physio-Chemical And Sensory Properties Of A Nutrient-Fortified Extruded Product, Tajudini Lassissi Akande

Graduate Theses and Dissertations

Protein malnutrition is responsible for half the deaths of children under the age of five each year in developing countries. More than 4%, 26%, and 70% of children with protein malnutrition live in Latin America/the Caribbean, Africa, and Asia, respectively. The objective of this research was to develop a novel snack made with millet, black eye bean (from Niger Republic), and rice flour fortified with soybean meal protein using extrusion technology. Proximate analysis of the four flours was carried out to determine their chemical composition. Central composite design (CCD) was used to obtain best extrusion conditions to develop a protein-enriched …

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Production Of Bioethanol By Fermentation Of Sugars Released By Dilute-Acid And Enzymatic Hydrolysis Of Soybean Meal, Deivis E. Lujan-Rhenals May 2013

Production Of Bioethanol By Fermentation Of Sugars Released By Dilute-Acid And Enzymatic Hydrolysis Of Soybean Meal, Deivis E. Lujan-Rhenals

Graduate Theses and Dissertations

Soybean meal (SBM) is a co-product of soybean oil extraction mostly used as animal feed due to its protein content ranging from 40 to 49%. Additionally, SBM contains 35-42% of carbohydrates, half of which are structural, and the remaining consists of approximately 17% of mono- and disaccharides--especially sucrose--up to 8% oligosaccharides, and 1-2% starch. When used as animal feed, only sucrose and starch are digested and absorbed by monogastric animals. Although SBM contributes carbohydrates to their diet, its main function is to provide proteins. Therefore, the selective removal of carbohydrates would create a protein-enriched meal with a greater value, which …

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Landscape Epidemiology And Machine Learning: A Geospatial Approach To Modeling West Nile Virus Risk In The United States, Sean Gregory Young May 2013

Landscape Epidemiology And Machine Learning: A Geospatial Approach To Modeling West Nile Virus Risk In The United States, Sean Gregory Young

Graduate Theses and Dissertations

The complex interactions between human health and the physical landscape and environment have been recognized, if not fully understood, since the ancient Greeks. Landscape epidemiology, sometimes called spatial epidemiology, is a sub-discipline of medical geography that uses environmental conditions as explanatory variables in the study of disease or other health phenomena. This theory suggests that pathogenic organisms (whether germs or larger vector and host species) are subject to environmental conditions that can be observed on the landscape, and by identifying where such organisms are likely to exist, areas at greatest risk of the disease can be derived. Machine learning is …

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Genetic Structure Of The Copperhead (Viperidae: Agkistrodon Contortrix Mokasen) At Its Most Northern Distribution, Brenna Aaren Levine May 2013

Genetic Structure Of The Copperhead (Viperidae: Agkistrodon Contortrix Mokasen) At Its Most Northern Distribution, Brenna Aaren Levine

Graduate Theses and Dissertations

The focus of molecular studies in North American pitvipers has been on species that warrant conservation concern, such as Timber (Crotalus horridus) and Massasauga rattlesnakes (Sistrurus catenatus). Scant effort has been directed towards the molecular ecology of the Copperhead (Agkistrodon contortrix), other than to evaluate male reproduction in a laboratory setting and phylogenetic history. Thus, employing DNA-based molecular techniques to study the natural history of A. contortrix will broaden our knowledge of molecular ecology in North American pitvipers, and particularly in a non-threatened species that can serve as a surrogate for threatened and endangered …

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Evaluating The Formation Of Bacterial Chondronecrosis With Osteomyelitis In Broilers Raised On Portable Wire Floor Models, Alex David Gilley May 2013

Evaluating The Formation Of Bacterial Chondronecrosis With Osteomyelitis In Broilers Raised On Portable Wire Floor Models, Alex David Gilley

Graduate Theses and Dissertations

Rearing birds on wire flooring has proven to be an effective method for consistently triggering significant levels of lameness in broilers, and while the wire flooring model has been proven effective, more mobile wire floor models have been developed to compliment the facility management conditions within commercial genetic selection programs. The mobile wire floor models have been titled "speed bumps", and through previous evaluation have resulted in significantly higher levels of lameness in broilers compared to litter floor shavings. The current experiment contains two studies (studies 1 and 2). Both studies involved comparing leg weakness between broiler strains; while in …

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