Digital Commons Network^™

Herbivore Preference For Afternoon- And Morning-Cut Forages And Adoption Of Cutting Management Strategies, H. F. Mayland, J. C. Burns, D. S. Fisher, Glenn E. Shewmaker, R. Carlstrom, D. S. Cash

IGC Proceedings (1977-2023)

Photosynthesizing forage plants accumulate total nonstructural carbohydrates (TNC) during daylight, but then TNC concentrations are reduced during the night. Afternoon-cut forage (PM) has greater TNC value and thus economic value, than morning-cut (AM). Livestock prefer PM-cut hay and this can be readily demonstrated by offering animals a choice of hays cut in PM and AM. Alfalfa growers in the western United States are readily adopting PM-cutting technology to increase profits.

Synthesis, Evaluation, And Characterization Of An Ergotamine Imprinted Styrene-Based Polymer For Potential Use As An Ergot Alkaloid Selective Adsorbent, Manoj B. Kudupoje, Eric S. Vanzant, Kyle R. Mcleod, Alexandros Yiannikouris

Animal and Food Sciences Faculty Publications

Alkaloid toxicities negatively impact livestock health and production. To assess alkaloid occurrences, adsorbent technologies may offer effective means to their extraction and isolation from a complex feed matrix. In this study, molecularly imprinted polymers (MIPs) were synthesized and evaluated for their specificity of binding to various ergot alkaloids. Co-polymers of styrene and hydroxyethyl methacrylate were synthesized in the absence or presence of an ergotamine (ETA) template, yielding non-imprinted polymer (NIP) and molecularly imprinted polymer (MIP), respectively. The influence of parameters such as pH, temperature, and initial concentration on the adsorption of ergot alkaloids was evaluated along with their application as …

A Year Of Progress: Publishers And Libraries Collaborating In Crisis Times And Planting The Seeds For Sustainable Ecosystems, Brittany Haynes, Antje Mays

Library Presentations

Increasing volumes of published research, proliferating research infrastructures, the rise of the Open Access movement, flat or declining library budgets, and inflexible purchasing and licensing models have led to growing fissures in the marketplace, especially exacerbated during the COVID-19 pandemic. Crucial for sustaining research, education, inquiry, and professional development, the information ecosystem faces a sustainability crisis from these pressures. Yet, some publishers have taken an innovative stance in partnering with libraries through flexible purchasing and licensing options, various access options and benefits as ways for meeting actual content needs without forcing bundle purchases, openness to custom packages, growing and diversifying …

Examining Food Security, Choices And Barriers Among Community Supported Agriculture Participants During Covid- 19 In Kentucky, Martha J. Biddle, Junghee Kang, Julie Derringer, Anna Rose, Dawn Brewer, Misook L. Chung, Terry A. Lennie, Gia Mudd-Martin, Timothy A. Woods

UK CARES Faculty Publications

The coronavirus disease (COVID-19) pandemic is challenging food security. Our study’s purpose was to examine relationships among food security status, eating patterns and perceived barriers to food choices among shareholders (N = 209) in a Community Supported Agriculture (CSA) program during stay- at-home restrictions due to the pandemic. The food insecure group (n = 33) reported lower consumption of fruits/vegetables, whole grains and greater consumption of fast foods and more barriers to food choices compared to the food secure group (p < .05). A low food insecure proportion (16%) among the CSA participants suggests a potential role of a CSA program to prevent food insecurity.

Assessment Of Deteriorated Structural Concrete To Provide Durable Repairs, Theodore Hopwood, Christopher Goff, Sudhir Palle

Kentucky Transportation Center Research Report

Most of the structural elements on Kentucky bridges are made of reinforced concrete. Many of these elements deteriorate as a result of corrosion of the reinforcing steel caused by carbonation and — primarily — applications of chlorides by the Kentucky Transportation Cabinet (KYTC). Corrosion of reinforcing steel is reviewed along with assessment procedures that leverage nondestructive evaluation (NDE) methods and related laboratory and field tests. Several maintenance procedures are discussed, including the application of sealers and coatings, patch and major concrete repairs, and electrochemical methods. Incorporating NDE and test results into maintenance procedure selection is discussed. Recommendations are provided on …

Effect Of Water-Soluble Browning Products In Heated Herbages On Rumen Microorganisms, E. Touno, A. Takenaka, T. Kondo, O. Tanaka, M. Murai

IGC Proceedings (1977-2023)

When feed is heated, browning can occur. This browning is detrimental to both the value of feed and physiological functioning of the animal. Browning occurs when polymeric substances are produced during the Maillard reaction. Indigestible soluble Maillard reaction products could affect nitrogen utilization by ruminants. A method has been established for isolation of water-soluble browning products using a reversed phase column. In the present work, the effect of water-soluble browning products isolated from heated herbage on rumen microorganisms was investigated. A solution of browning products was added to the medium 10 to obtain final concentration of 0, 0.5 and 2.0 …

Effects Of Agroforestry Practices On Soil Properties In The Drylands Of Eastern Kenya, Nicholas Syano Mutuku, Moses M. Nyangito, Geoffrey Kironchi, Oliver Vivian Wasonga

IGC Proceedings (1977-2023)

Drylands, which are home to about 2 billion people face a myriad of problems among them low land productivity. Agroforestry is one of the land use practices that is perceived to be sustainable with beneficial effects on soil properties. However, the effects of agroforestry practices on soils especially in the drylands have rarely been quantified and studied in details. The study determined the effects of selected agroforestry practices on soil properties in Makueni County of Kenya where agroforestry has been promoted by various organizations. Four soil samples were collected at 0-15cm, 15-30cm, 30-45cm and 45-60cm depths in a zigzag pattern …

Futurological Fodder: On Communicating The Relationship Between Artificial Intelligence, Robotics, And Employment, Michael E. Samers Dr

Geography Faculty Publications

This article examines the debate concerning the employment implications of the so-called ‘Fourth Industrial Revolution’ (FIR) or the increasing presence of artificial intelligence and robotics in workplaces. I analyze three ‘genres’ associated with this debate (academic studies including neo-classical and heterodox/post-human approaches, the ‘gray literature’, and popular media) and I argue that together they represent ‘futurological fodder’ or discourses and knowledges that ‘perform’ the FIR and its purported consequences. I contend further that these genres involve a complex mix of ethics and politics, and I conclude with a reflection on the political implications of the FIR debate.

Process Evaluation Of The Early Implementation Stages Of The National Diabetes Prevention Program Through Kentucky Cooperative Extension: Perceptions Of Adopters And Potential Adopters, Nicole Breazeale, Heather Norman-Burgdolf, Katherine Counts, Lovoria B. Williams

Dietetics and Human Nutrition Faculty Publications

With the growing demand for lifestyle change programs that prevent or delay Type 2 diabetes onset, community organizations with broad reach should be explored for national dissemination of the National Diabetes Prevention Program (NDPP). This study evaluates the early implementation of the NDPP through Cooperative Extension in four Kentucky counties and explores the feasibility of scaling up the program to additional counties. Using a qualitative approach, semi-structured telephone interviews were conducted with 12 Family and Consumer Sciences (FCS) Agents – four who were participating in the pilot (adopters) and eight who had no experience with the NDPP (potential adopters). Five …

Selecting The Proper Gps Guidance System For Your Operation, John M. Long

Kentucky Grazing Conference

Computers and other electronics have become commonplace on most newer agricultural equipment. Producers can now collect more information about their operation easier than ever before. Most of this information is commonly tied to the location where it was collected. GPS coordinates are the most common way producers determine this location, so selecting the proper GPS system for the job is critical. Whether a producer has not used a GPS systems and wants to find an affordable entry level guidance system or wants to upgrade to the latest model with all the bells and whistles, there are many different things that …

Review Of: Digging Our Own Graves: Coal Miners And The Struggle Over Black Lung, Michael Mccawley

Journal of Appalachian Health

The Journal of Appalachian Health is committed to reviewing published media that relates to contemporary concepts affecting the health of Appalachia. Coal mining and black lung disease have long been a central topic of both political and health communities in Appalachia. The book, Digging Our Own Graves (Coal Miners and the Struggle over Black Lung Disease) by Barbara Ellen Smith, is a well-known title, now updated; its newest edition is reviewed.

Covid-19 Experiences, Behaviors, Beliefs, And Well-Being Among Students And Employees At A University In Rural Appalachia: A Cross-Sectional Study, Lauren Wisnieski, Kimberly A. Carney, Jenny L. Thornley

Journal of Appalachian Health

Introduction: In response to the coronavirus disease (COVID-19) pandemic, most universities experienced drastic operational changes with shifts to online learning, work-from-home policies, and social distancing measures. These changes have caused concern for social isolation and mental health.

Purpose: This cross-sectional study explores differences in COVID-19 experiences, behaviors, beliefs, and well-being among students and employees (faculty and staff) at a rural Appalachian university.

Methods: Data were collected with an online anonymous survey in September-October 2020 using convenience sampling. The survey measured multiple domains including COVID-19-related 1) beliefs, 2) symptoms and diagnoses, 3) exposure and preventive behavior, and 4) social, mental, and …

Access To And Use Of Technology For Health: Comparisons Between Appalachian Kentuckians And The General U.S. Population, Robin C. Vanderpool, Lindsay R. Stradtman, Anna Gaysynsky, Quan Chen, Meghan Johnson, Bin Huang

Journal of Appalachian Health

Introduction: Technology may increase the availability of health information and enable health promoting behaviors. However, lack of access to and use of technology may also exacerbate disparities, particularly in rural communities with limited Internet access.

Purpose: The purpose of this study was to compare Internet access, device ownership, and use of technology for health between Appalachian Kentuckians and the general U.S. population.
Methods: Findings from the 2017 Assessing the Health Status of Kentucky (ASK) survey were compared to national estimates from the Health Information National Trends Survey (HINTS) 5, Cycle 1 (2017), with a particular focus on degree of rurality. …

Evaluating Large Spontaneous Deletions In A Bovine Cell Line Selected For Bovine Viral Diarrhea Virus Resistance, Aspen M. Workman, Michael P. Heaton, Dennis A. Webster, Gregory P. Harhay, Theodore S. Kalbfleisch, Timothy P. L. Smith, Shollie M. Falkenberg, Daniel F. Carlson, Tad S. Sonstegard

Maxwell H. Gluck Equine Research Center Faculty Publications

Bovine viral diarrhea virus’s (BVDV) entry into bovine cells involves attachment of virions to cellular receptors, internalization, and pH-dependent fusion with endosomal membranes. The primary host receptor for BVDV is CD46; however, the complete set of host factors required for virus entry is unknown. The Madin-Darby bovine kidney (MDBK) cell line is susceptible to BVDV infection, while a derivative cell line (CRIB) is resistant at the level of virus entry. We performed complete genome sequencing of each to identify genomic variation underlying the resistant phenotype with the aim of identifying host factors essential for BVDV entry. Three large compound deletions …

Understanding Parents' Views Toward The Newly Enacted Hpv Vaccine School Entry Policy In Puerto Rico: A Qualitative Study, Vivian Colón-López, Diana T. Medina-Laabes, Roxana Soto Abreu, Olga L. Díaz Miranda, Ana P. Ortiz, María E. Fernández, Pamela C. Hull

Behavioral Science Faculty Publications

BACKGROUND: The Human papillomavirus vaccine (HPV) is an essential tool for the prevention of HPV-related cancers. In Puerto Rico, the Secretary of Health established a school entry requirement of at least one dose of HPV vaccination in girls and boys aged 11 and 12 years, taking effect in August 2018. Our study aimed to examine parents' and guardians' views of unvaccinated children about the process of implementation of the new HPV vaccination school entry policy in Puerto Rico and identify potential barriers and facilitators related to the implementation of this requirement.

METHODS: During April through November 2019, we conducted three …

Valuing The Expertise Of Mobile Herders In Arid South Africa--A Photographic Essay, C. F. Cupido, W. Ellis, M. I. Samuels

IGC Proceedings (1977-2023)

Pastoralism has been practiced for millennia in numerous ecosystems across the world. Throughout history, pastoral systems and in particular herding have been replaced by the commercialization of livestock production, which essentially made herders redundant in many sub-Sahara countries resulting in job losses. Herding is however still practiced in many countries, but the essential role of the herder is in many instances snubbed upon and disregarded as trivial work, hence their low social standing within the community. Literature however indicates that herding does offer many benefits over commercial paddock systems e.g. improving rural livelihoods, reviving customary practice, reducing stock theft, reducing …

Action Plan For The International Year Of Rangelands And Pastoralists (Iyrp): The Case For The United States, Canada, And Mexico, Barry Irving, Larry Howery, Jürgen Hoth, Jess Peterson

IGC Proceedings (1977-2023)

The GAP analysis (A Case of Benign Neglect: Knowledge gaps about sustainability in rangelands and pastoralism) points to several gaps that are relevant to the US, Canada and Mexico. North American rangelands span the ecological continuum of polar to hot deserts and arid to humid climates that exhibit highly variable ecological and forage production potential across time and space. Although there is a great deal of rangeland research, extension, and inventory capacity in all three countries, a weak link is the dissemination of information to North American pastoralists (conventionally referred to as ranchers or producers). Although the extension system in …

Priority Themes And Issues For The International Year Of Rangelands And Pastoralists, Maryam Niamir-Fuller, James T. O’Rourke, Barbara Hutchinson

IGC Proceedings (1977-2023)

The objective of the International Year of Rangelands and Pastoralism (IYRP) is to increase world-wide awareness and recognition of the value and contributions of rangelands and pastoralists. The aim is to influence country policies, legislation, and programs; and to encourage development, research, extension and educational initiatives that will lead to sustainability of rangelands and pastoral/livestock systems. Although each country should decide on how they would celebrate the IYRP, the adoption of a global framework of 12 monthly themes will help to a) provide suggestions and ideas, b) highlight urgent and topical issues, and c) show how pastoralism and rangelands across …

Priority Areas For Action And Research On Pastoralism And Rangelands In Eastern Africa, M. O. Odhiambo

IGC Proceedings (1977-2023)

There is an element of irony around pastoralism and research in Eastern Africa. While it is one of the most researched production and livelihood systems, pastoralism is also the least understood by policymakers and development actors, with discussions about its importance characterized by significant gaps in knowledge. What is more, policy actors have difficulties accessing empirical data specific to pastoralism and rangelands in a form that allows well-founded decision-making on policy and action. Most available data tend to be out of date and not disaggregated with reference to pastoralism and rangelands. As a result, much of the discourse around pastoralism …

International Year Of Rangelands And Pastoralists (Iyrp) History, Process, Priority Themes And Way Forward, James T. O’Rourke, Maryam Niamir-Fuller, Barbara Hutchinson

IGC Proceedings (1977-2023)

The road towards the declaration of an IYRP by the United Nations has been long and rocky, perhaps mirroring the relative lack of understanding by some governments of the importance of rangelands and pastoralists for a sustainable world, compared to the focus on other sectors such as forest or cropland sustainability. The idea was first discussed at the International Rangeland (IRC) and Grassland (IGC) Congress held in Hohhot, China in 2008. The creation of an International Support Group (ISG) in 2015 helped to provide a stronger rational and the integration of social dimensions. This has led to a growing partnership …

Women’S Empowerment For Demographic Issues And Conflicts In African Pastoralist Societies, M. R. Cevallos, P. Manzano

IGC Proceedings (1977-2023)

Widespread conflict is a recurring issue in African pastoralist societies. While its roots are debated, there is a missing link with prevailing poverty among communities and particularly among women. We here apply a gender perspective to establish a hypothesis on the role of women in pastoralist conflicts.

The existing polygynic system establishes a violent frame for pastoralist women, who would be sold at increasingly early ages to provide in turn enough resources for furnishing the dowry needed by their brothers. The control on them would thereby be transferred from their own families to their husband and his family, where they …

The Effect Of Calcium Ions On Mechanosensation And Neuronal Activity In Proprioceptive Neurons, Devan E. Atkins, Kimberly L. Bosh, Grace W. Breakfield, Sydney E. Daniels, Makayla J. Devore, Hailey E. Fite, Landys Z. Guo, Danielle K. J. Henry, Alana K. Kaffenberger, Katherine S. Manning, Tatum E. Mowery, Cecilia L. Pankau, Nyla Parker, Malina E. Serrano, Yamaan Shakhashiro, Hannah N. Tanner, Ruth. A. Ward, Aubrey H. Wehry, Robin L. Cooper

Biology Faculty Publications

Proprioception of all animals is important in being able to have coordinated locomotion. Stretch activated ion channels (SACs) transduce the mechanical force into electrical signals in the proprioceptive sensory endings. The types of SACs vary among sensory neurons in animals as defined by pharmacological, physiological and molecular identification. The chordotonal organs within insects and crustaceans offer a unique ability to investigate proprioceptive function. The effects of the extracellular environment on neuronal activity, as well as the function of associated SACs are easily accessible and viable in minimal saline for ease in experimentation. The effect of extracellular [Ca²⁺] on …

The Effect Of Optogenetically Activating Glia On Neuronal Function, Cecilia Pankau, Shelby Mccubbin, Robin L. Cooper

Biology Faculty Publications

Glia, or glial cells, are considered a vital component of the nervous system, serving as an electrical insulator and a protective barrier from the interstitial (extracellular) media. Certain glial cells (i.e., astrocytes, microglia, and oligodendrocytes) within the CNS have been shown to directly affect neural functions, but these properties are challenging to study due to the difficulty involved with selectively-activating specific glia. To overcome this hurdle, we selectively expressed light-sensitive ion channels (i.e., channel rhodopsin, ChR2-XXL) in glia of larvae and adult Drosophila melanogaster. Upon activation of ChR2, both adults and larvae showed a rapid contracture of body wall …

Stakeholder Attitudes Towards Wildlife-Based Land Use In Namibia’S Kunene Region, R. Luetkemeier, R. Kraus, M. Mbidzo, M. Hauptfleisch, L. Liehr

IGC Proceedings (1977-2023)

African rangeland systems are characterized by competing resource use for livestock farming and wildlife conservation. In Namibia’s rangeland savannahs, cattle farming for commercial and subsistence purposes is common, shaping the land use system of the country’s north. Local cattle stocking rates increased over the past decades and triggered ecosystem degradation that became visible in the last drought-stricken years. Cattle was lost, meat prices dropped and livelihoods were threatened. It is assumed that current land use activities are pushing the rangeland ecosystem towards ecological tipping points. Alternative approaches to use the scarce resources of rangelands in a more sustainable way may …

Why We Need A Ruminant Revolution: Combating Malnutrition And Metabolic Illnesses To Enable Sustainable Development, Peter J. Ballerstedt, David B. Hannaway, T. D. Noakes

IGC Proceedings (1977-2023)

Animal source foods (ASF) are essential for proper human development and function. Livestock in general, and ruminants in particular, are essential components of our sustainable global food systems. Of significant worldwide impact, diets with higher-than-recommended levels of ASF can correct the symptoms of metabolic illnesses, offering hope in arresting the current worldwide epidemic of diabetes and other metabolic diseases. Most dietary policy and recommendations are based on the ill-founded belief that plant-based, high-carbohydrate diets are “healthy.” High-quality scientific evidence does not support the belief that vegetarian diets are healthier than omnivorous or animal-based diets. A Therapeutic Carbohydrate Reduction (TCR) lifestyle …

Virtual Power Plant Control For Large Residential Communities Using Hvac Systems For Energy Storage, Huangjie Gong, Evan S. Jones, Rosemary E. Alden, Andrew G. Frye, Donald G. Colliver, Dan M. Ionel

Power and Energy Institute of Kentucky Faculty Publications

Heating, ventilation, and air-conditioning (HVAC) systems use the most electricity of any household appliance in residential communities. HVAC system modeling facilitates the study of demand response (DR) at both the residential and power system levels. In this article, the equivalent thermal model of a reference house is proposed. Parameters for the reference house were determined based on the systematic study of experimental data obtained from fully instrumented field demonstrators. Energy storage capacity of HVAC systems is calculated and an equivalent state-of-charge is defined. The uniformity between HVAC systems and battery energy storage system is demonstrated by DR control. The aggregated …

Shelf Life Potential And Microbial Load Of Varying Mixtures Of Grass-Legume Pellets: A Dry Season Feed, O. A. Aderinola, S. T. Oyewole, D. O. Okunlola

IGC Proceedings (1977-2023)

The effects of storage duration (0, 6 and 12 weeks), storage medium (plastic container, polythene bag and jute sack) and varying mixture of grass-legume (60% Panicum maximum (6Pm); 30% Panicum maximum + 30% Lablab purpureus (3Pm3Lp); 40% Panicum maximum + 20% Lablab purpureus (4Pm2Lp); 40% Panicum maximum + 20% Stylosanthes hamata (4Pm2Sh) and 30% Panicum maximum + 30% Stylosanthes hamata (3Pm3Sh)) on shelf life and microbial load of grass-legume pellets were examined in the derived savanna zone of Nigeria (Latitude 8⁰N, Longitude 4⁰E) using a 3 x 3 x 5 factorial arrangement using completely randomized design …

Grass-Legume Mixtures For Diversified And Profitable Forage Production, M. A. Islam, D. Ashilenje

IGC Proceedings (1977-2023)

Grass-legume mixtures can improve forage yields, nutritive value, and net economic benefits. A replicated experiment was conducted from 2013-2017 at the University of Wyoming Sheridan Research and Extension Center to determine forage yield, nutritive value, and gross margin for meadow bromegrass (Bromus riparius Rehm.), alfalfa (Medicago sativa L.), sainfoin (Onobrychis viciifolia Scop.), and birdsfoot trefoil (Lotus corniculatus L.) mixtures and monocultures. Treatments included 50-50% and 70-30% mixtures of meadow bromegrass with each legume and 50-25-25% mixture of meadow bromegrass with two legumes and 50-16.7-16.7-16.7% mixture of meadow bromegrass, alfalfa, sainfoin, and birdsfoot trefoil. Grass monocultures received …

Linking Demand With Supply For Tropical Forage Genetic Resources To Reach Impact At Scale, M. Peters, S. Burkart, U. Ohmstedt, C. Castiblanco, E. Stern, A. Nicolayevsky, K. Enciso, M. Díaz, S. Mwendia, S. Douxchamps, A. O. Notenbaert, B. Lukuyu, K. Fuglie

IGC Proceedings (1977-2023)

Over the last decades a wealth of information on tropical forage genetic resources has been collated and is accessible to users ranging from farmers, development practitioners and researchers to decision makers and academia, e.g. through online tools such as Tropical Forages: An interactive selection tool (www.tropicalforages.info). However, while genetic diversity is being conserved by international gene banks, adoption of improved tropical forages is still far from reaching its full potential. Major bottlenecks in our view include lack of awareness of available forage genetic resources, confirmation of adaptation in a wide range of bio-physical, socio-economic, political and cultural contexts …

Forage Production And Utilisation: Forage Production For Improved On-Farm Wealth And Wellness, John Caradus

IGC Proceedings (1977-2023)

It is often overlooked that the world’s largest agricultural land use by far is grassland, where these are mostly grazed by livestock, either domesticated or wild animals. Native grasslands are referred to as savanna (in Africa), steppe (in sub- Artic Eurasia), prairie (in North America), or pampas (in South America). Grasslands contribute to the livelihoods of more than 800 million people (FAO 2000). Native grasslands are maintained by restricted rainfall that reduces the opportunity for succession by forest. Grasslands are not only food for livestock, but also provide a habitat for wildlife, prevent soil erosion, support pollinators, and capture carbon …