Other Animal Sciences Commons^™

Vector-Borne Viral Diseases In Horses, Sunutcha Suntrarachun

The Thai Journal of Veterinary Medicine

Vector-borne viral diseases are major threats to equine health worldwide. These infections are transmitted by arthropod vectors such as mosquitoes, biting midges, and horseflies, resulting in clinical manifestations ranging from mild febrile illness to severe neurological, respiratory, circulatory, or hematologic disorders with high mortality rates. Major equine vector-borne viral diseases include African horse sickness (AHS), equine infectious anemia (EIA), equine encephalomyelitis (Eastern: EEE, Western: WEE, and Venezuelan: VEE), West Nile virus (WNV), and Japanese encephalitis (JE). Each disease is caused by a distinct viral pathogen and transmitted by specific vectors that influence their epidemiology and geographic distribution. Transmission occurs through …

Understanding Perceptions About And The Practice Of Integrated Pest Management And Biological Control Of The Filth-Breeding Flies By Individuals Involved In The Equine Industry In The United States, Virgillia Adele Beyer-Junfin, Theresa Pesl Murphrey, David Lawver, Barry Boyd, Amy Boren-Alpizar, Rilee Hall, Audra W. Richburg

Journal of Extension

Filth-breeding flies pose significant health risks and costs in the equine industry. Although an arsenal of management strategies exists, integrated pest management (IPM) utilizing biological control (BC) offers cost and labor efficient pest control for equine facilities. Yet, little data exists on IPM adoption across the equine industry in the United States. This quantitative study examines the knowledge, perceptions, and adoption of IPM of those involved in the equine industry. Findings reveal knowledge barriers and time constraints as major preventatives. Preferred communication channels for IPM information are also identified. Recommendations are made for further research and practice in IPM and …

Equine Hair Cortisol Concentration And The Effects Of Season, Storage Method, And Personality Traits, Savannah M. Rivers, Grace A. Robertson, Thomas Powell, Lydia O'Sullivan, Shea Porr

Murray State Theses and Dissertations

Stress exists everywhere, for survival, adaptation is necessary. These adaptations directly reflected the stresses the animal experienced and demonstrated the ability to cope. An animal that could not cope could not survive. Stressful experiences resulted in behavior patterns for each animal. Consistent behavior can be defined as personality [1]; therefore, stress could directly influence personality by changing behavior.

Stress research helped analyze and identify animal personality traits, especially horses. Human-horse pairings partially relied on personality traits and, when considered, often led to improvements in welfare [2]. There are various tools to assess personality, one being Equine Personality Assessment [3]. The …

Use Of Fecal Inoculum From Easy And Hard Keeper Horses To Determine In-Vitro Digestibility Of Feedstuffs Used In Equine Diets, Leah Bills

Graduate Theses/Dissertations

Digestibility studies provide vital information for formulating ideal diets based on an animal’s ability to digest and absorb the available nutrients from the feed provided. The purpose of this study was to determine if there is a difference in the nutrient digestion of horses between those that have a difficult time maintaining a healthy body weight (body condition score at or below 5, hard keeper) and those that easily maintain a healthy body weight (body condition score of >5, easy keeper). Six mature geldings averaging 534.1 ± 47.1 kg were used in this study. During the experimental period horses were …

Managing Equine Metabolic Syndrome, Abigail Meldrum, Karl Hoopes

All Current Publications

Equine metabolic syndrome (EMS) is a relatively new disease that we are still learning about. There are many things to investigate when dealing with a new disease: causes, predispositions, symptoms, secondary issues, treatments, and prevention. Because changing the animal's feed regimen is currently the most effective and well-known way to manage EMS, this fact sheet focuses primarily on how diet can impact affected horses. As a newer syndrome, it is vital to learn as much as possible about it to understand, treat, and prevent this disease.

Hay Inventory And Purchasing Calculator For Horse Owners, Robyn L. Stewart, Brooklyne M. Wassel

Journal of Extension

The Hay Inventory and Purchasing Calculator for Horse Owners is an Excel-based tool for estimating hay needs and expenses for horse owners. Challenges with hay quality and availability can result in higher than expected costs for horse owners as they attempt to purchase enough horse-quality hay to meet their needs. Estimating intake requirements and creating a budget for hay purchasing is key for the effective management and profitability of equine operations. This tool can be used regardless of geographic location and will benefit a diverse audience including Extension educators, equine business owners, and horse owners.

Comparing The Effectiveness Of Different Forms Of Vitamin E Supplementation (Liquid Vs. Powder) On Serum Alpha-Tocopherol Concentrations In Developing Horses, Emilia Fong-Gallagher

Honors Scholar Theses

Vitamin E is an essential antioxidant in equines that has a significant role in the nutritional requirements of horses to keep bodily systems functioning at optimal levels. Vitamin E deficiency is often associated with serious incurable neuromuscular diseases such as equine motor neuron disease and equine protozoal myeloencephalitis. Many horses stabled in urban areas are often deficient due to the lack of adequate grazing time as their natural source of vitamin E is from grass, and therefore should receive supplementation. This study evaluated the effectiveness of different forms of Elevate vitamin E supplement on the serum alpha-tocopherol concentrations in fourteen …

The Continuation Of Thoroughbred Racing: A Dual Mission, Isabella V. Williams

Honors Theses and Capstones

Thoroughbred racing is the highest-profile segment of the equine industry in the United States and around the world, accounting for 50% of industry jobs and 25% of industry revenue. Public interest in the sport is rising thanks to social media and celebrity involvement at marquee events like the Kentucky Derby, leading to increased scrutiny of the sport, posing a high risk to human and equine participants alike. Public outcry at equine injuries in particular threatens the sport’s social license to operate (SLO), making it critical to protect the “whole-life welfare” of the animals involved in the sport to ensure its …

Determining Population Structure In Kentucky Parascaris Univalens Specimens, Constance Finnerty

Theses and Dissertations--Veterinary Science

Parascaris univalens is a highly pathogenic nematode that affects the gastrointestinal system of young horses. When unaddressed, this parasite causes severe intestinal impactions and even death. Parascaris univalens is also found to have an emergence of anthelmintic resistances, causing a concern for horse owners. Despite its clinical significance, very little work has been done on Parascaris univalens to identify its population structure. This study aimed to determine the population structure of Parascaris univalens through Illumina next generation sequencing (NGS) on three hierarchical categorizations: within a horse, within an isolated herd, and within horses in the state of Kentucky. A total …

Pharmacokinetics Of Cbd Supplementation In Horses: Single Dose Vs. Long-Term Feeding, Madilyn Adamchik

Honors College Theses

Research about supplemental feeding of cannabidiol (CBD) to horses is still in its early stages, but many horse owners are feeding CBD supplements for supposed benefits, including behavior and pain management. Cannabinoids work through the endocannabinoid system to modulate nervous and hormonal actions in the body, working to maintain a healthy homeostatic balance. Safety and efficacy have been tested for dosages of up to 500 mg of CBD per day for horses, but further research about the pharmacokinetics based on dosage amount and form of CBD are still needed. The objectives of this study were to evaluate the pharmacokinetics of …

Seroprevalence And Titer Concentration Testing For Leptospirosis In Equine, Ashley Himmelsbaugh

Honors College Theses

The most common best management practice used to combat diseases in horses is vaccination, which can decrease the incidence or severity of illness. However, the duration of immunity will vary for each vaccination and must be considered for revaccination purposes. Titer concentration, which evaluates antibodies in the blood, may be a helpful way of determining how long an animal has immunity to a disease. Leptospirosis, a zoonotic, bacterial disease, can result in uveitis, potentially leading to blindness, and abortion in mares. One serovar, Leptospirosis pomona (L. pomona), is associated with most cases of clinical disease in horses in North America. …

Utah Brand Inspections For Horses, Karl Hoopes, Jacob Hadfield, Jessie Hadfield

All Current Publications

Brand inspection laws and proof of ownership laws are often misunderstood by horse owners in Utah. Outlined in this paper are the current laws regarding requirements for proof of ownership while traveling and brand inspection requirements during the transfer of ownership.

Fragile Foal Syndrome: Its Past, Present, And Future, Alena Martin, Alena M. Martin

Honors College Theses

Though Fragile Foal Syndrome (FFS) has been around for some time, the public interest in FFS is recent. The hype spread rapidly from a public media announcement that a stallion at a prominent North American stud farm was a carrier (Brooks, 2021). As with most genetic mutations, FFS likely arose due to the increased inbreeding that results from human selection (Orlando & Librado, 2019). Fragile Foal Syndrome affects the enzyme responsible for developing the connective tissues. Two recent case studies highlighted the devastating effect of FFS on every part of the equine body (Metzger, et al., 2020; Grillos, 2021). So …

Impact Of Storage Temperature On Viability Of Microbial Inoculum For Estimating In Vitro Equine Digestibility, Delaney Brenne O'Donnell

Graduate Theses/Dissertations

This study evaluated the effect of storage temperature of equine fecal material on the viability of microbial inoculum used for in vitro equine digestibility trials. Fecal material was stored at four storage temperatures of 39°C for 15 minutes (control), 22°C for 6h, 3°C for 6h, and -18°C for 24h. Stored fecal material was used to form microbial inoculum for use in an Ankom Daisy II Incubator. Six different forage samples were digested in the Ankom Daisy II Incubator to evaluate interactions between storage condition of microbial inoculum and chemical composition of digested forage samples. After determination of dry matter digestibility …

The Effect Of Slow-Feeding Hay Nets On Post-Prandial Equine Salivary Cortisol Levels, Grace Simpson

Undergraduate Honors Thesis Projects

Throughout its evolution, the Equus caballus, or horse, developed a physiological response to environmental alterations involving the synthesis and release of cortisol from the hypothalamic-pituitary-adrenal axis, to regulate blood glucose levels, vascular tone and hormone release throughout the body (Ambrojo et al., 2018). With a hypothesis that changing a horse’s feeding method can alter salivary cortisol levels, the aim of this research project was to determine if feeding forage to horses in slow-feeding haynets would significantly reduce acute cortisol salivary level fluctuations, which would be valuable to minimize horses’ stress and increase overall welfare. Two feeding methods …

A Review Of Equine Laminitis: Risk Factors And Predispositions, Molly C. Henion

Honors Theses and Capstones

Equine laminitis is a disease of the hoof characterized by inflammation or disruption of the sensitive and insensitive laminae located within the hoof. These structures are responsible for maintaining a secure connection between the third phalanx (P3) and the hoof wall. Damage to these laminae can weaken the attachment between the hoof wall and P3, causing separation and eventual rotation of P3. Equine laminitis can result from multiple triggers, but the most commonly seen cases of the disease are those which are related to endocrinopathy and metabolic related issues. This review will focus on determining the metabolic risk factors associated …

A Comparative Study Of Equine Gut Microbiomes Using 16s And 18s Rrna Sequencing, Jillian Jorgenson

Undergraduate Honors Thesis Projects

The gut microbiome of domestic horses (Equus ferus caballus) can be broken down into two primary divisions of interest: (1) prokaryotic composition, consisting of bacteria and archaea and (2) fungal composition. Within the gut, there are also eukaryotic parasite communities that may interact with the microbiome. While each has been the subject of various scientific explorations, in this study we analyze the potential interconnectedness of these categories. To determine the extent to which each component of the gut microbiome/parasitic communities influences the other, DNA was extracted and amplified from the fecal samples of eight horses. A combination of …

An Examination Of Preimplantation Embryos And Endometrium Developed During Induced Aluteal Cycles In The Mare, Chelsey Audra Leisinger

LSU Doctoral Dissertations

Changes to the embryonic environment that occur within the first few days of development can have significant effects on subsequent fetal development. The following studies investigate the effects of progesterone-deprivation during the early preimplantation period in the mare. The first study described embryo morphology (diameter, stage, and quality grade) collected from mares with induced aluteal cycles. The second study evaluated the effect of induced aluteal cycles on the future fertility of embryo collections as a potential method for cycle manipulation of embryo donor mares. The third study characterized embryonic and endometrial transcript expression of progesterone-mediated transcripts as well as those …

Effects Of Equine Assisted Activities And Therapies On Equine Stress And Welfare, Sarah Jean Reega

Honors Theses and Capstones

Equine assisted activities and therapies (EAATs) are becoming an increasingly popular approach for therapy, therapeutic recreation, and learning for a broad range of human clients and participants. In the EAAT field, most research has been human-centric, focusing primarily on benefits of EAATs for participants and clients. Relatively little research has been conducted on the effects of EAATs on equine stress and welfare for equines engaged in EAAT sessions.

The effects of equine assisted activities and therapies on equine stress and welfare were studied by way of exploring current EAAT professionals’ experiences and views related to equine stress and welfare in …

Effects Of Dietary Amino Acid Supplementation On Measures Of Whole-Body And Muscle Protein Metabolism In Aged Horses, Christine M. Latham

Theses and Dissertations--Animal and Food Sciences

Sarcopenia is a condition that is most common in aged animals, and is characterized by the loss of skeletal muscle mass and integrity, and can lead to physical disability and poor quality of life. Since skeletal muscle protein synthesis can be limited by the availability of amino acids, supplementation of limiting amino acids to ameliorate the progression of sarcopenia has become a topic of interest in companion animal research. Although there is some data to support the idea that amino acid supplementation improves maintenance of muscle mass in aged horses, the cellular mechanisms behind that improvement have yet to be …

"Luck Of The Draw:" Enhancing Safety In Equine University Sport, Angela Barbour

Honors Projects

Equestrian sports have the highest rates of injury across all sports with traumatic brain injury rates twice as high as those in football. The goal of this project is to make our university Intercollegiate Horse Show Association (IHSA) athletes safer by creating an easy-to-use tool that athletes can apply to evaluate new horses they ride at competitions. The tool guides team members through evaluation techniques by providing important safety dimensions and scoring guidelines. An undergraduate majoring in biology with an interest in Veterinarian specialization developed the diagnostic tool. The tool allows evaluation of movement/quality of gaits, jumping ability, equine personality, …

Using The Indicator Amino Acid Oxidation Technique To Study Threonine Requirements In Horses Fed Different Feed Compositions, Chanhee Mok

Theses and Dissertations--Animal and Food Sciences

Threonine has been reported to be the second limiting amino acid in typical equine diets, but its actual requirement has not been determined in horses. The indicator amino acid oxidation (IAAO) method has been successfully used for evaluating amino acid metabolism and requirements in animals and humans. The objective of this research was to use the IAAO method to estimate threonine requirements in mature horses fed two different feed compositions. In the first study, 6 Thoroughbred mares (4 – 16 years old) received each of 6 levels of threonine intake in a high concentrate diet, in a randomly determined order. …

Evaluating Dietary Amino Acid Adequacy In Horses Using Isotopic Techniques, Sara L. Tanner

Theses and Dissertations--Animal and Food Sciences

Little is known about amino acid (AA) requirements in horses despite muscle mass accretion being of importance to an athletic species. Isotope methods for determining AA requirements and whole-body protein synthesis (WBPS) had not been previously used in growing horses. The first study herein was the first to apply isotope methods to determine WBPS in growing horses. In the study, weanling colts received two different levels of crude protein. Whole-body protein kinetics indicated that WBPS was greater when the weanlings were fed the diet with a greater crude protein content (P<0.05). The second study sought to determine a lysine requirement for yearling horses using the indicator AA oxidation (IAAO) method. Despite using six dietary levels of lysine; three above and three below the current recommendation, no breakpoint could be determined. Phenylalanine kinetics were not affected by lysine level (P>0.05), but plasma lysine increased linearly with lysine intake …

Effects Of Post-Castration Interval Length On Recovery Of Epididymal Sperm Of Canine And Equine Sperm, Jordan Escobar

Animal Science

No abstract provided.

In Vivo And In Vitro Digestibility Of A Complete Pelleted Feed In Horses, Cassandra Renee Sweeney

Master's Theses

ABSTRACT

COMPLETION OF AN IN VIVO DIGESTIBILITY TRIAL IN HORSES AND IN VITRO DIGESTIBILITY ASSAY DEVELOPMENT

Cassandra Renee Sweeney

In vivo analysis of equine feed digestibility has been the gold standard since the late 1800's, although it can be time consuming, costly, and labor intensive. In vitro digestibility analysis may be more economical and beneficial to both feed manufacturers and consumers. The availability of accurate in vivo data is crucial for critical evaluation and validation of any potential in vitro method (Coles et al., 2005). Ten adult American quarter horse geldings were used in the in vivo digestibility evaluation of …

Helmets, Heads, And Health For Horse Enthusiasts, Patricia Evans, Colette Floyd

All Current Publications

This publication describes why helmet use is highly recommended for all equestrian activities, while assisting with proper helmet sizing and fit.

Utah Alert: West Nile Virus, Clell V. Bagley Dvm

All Archived Publications

West Nile Virus (WNV) has killed thousands of crows and caused human and equine deaths in North America since it first appeared in New York City in 1999. It has been detected in 144 species of birds, 22 species of mosquitoes, as well as in horses, bats, cats, rabbits and other animals. Birds carry the virus and mosquitoes spread it to other birds, animals or humans. Animals, other than horses and birds, rarely show any illness from the infection.