The Horse

MAR 2019

The Horse:Your Guide To Equine Health Care provides monthly equine health care information to horse owners, breeders, veterinarians, barn/farm managers, trainer/riding instructors, and others involved in the hands-on care of the horse.

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WHAT'SONLINE CURRENTLY ON 6 March 2019 The Horse | TheHorse.com Use our calculator to predict when your mare will foal. Sponsored by Bimeda. TheHorse.com/tools/mare-gestation- calculator Round broodmares grazing on lush pastures might make an idyllic picture, but danger could lurk in the grass. Download this special report to learn more about fescue toxicosis, its cause, prevention, and available treatment. Sponsored by Dechra. TheHorse.com/164882 Send your performance-related equine health questions to THEditorialStaff@TheHorse.com. Sponsored by Performance Horse Nutrition. ■ Does My Horse Have Pyramidal Hoof Disease? TheHorse.com/165511 ■ Can I Maintain My Semi-Retired Horse on an NSAID? TheHorse.com/164878 ■ How Can I Get my Picky-Eater Sport Horse to Eat Enough Calories? TheHorse.com/165944 Special Report Commentary: Do Horses Get Motion Sick? Is your horse lame? Advanced diagnostic and management strategies for navicular syndrome have improved long-term out- comes for affected horses. Sponsored by Dechra. TheHorse.com/Navicular Could motion sickness make a horse reluctant to load and cause him to scramble in the trailer? Find out at TheHorse.com/165668. Performance Horse Q&A Mare Gestation Calculator Read: 13 Facts About Fescue Toxicosis ERICA LARSON/THE HORSE ISTOCK.COM COURTESY ROOD & RIDDLE EQUINE HOSPITAL Nutrition Q&A Each week equine nutritionist Dr. Clair Thunes answers user questions about feeding their horses. Submit yours to THEditorialStaff@ TheHorse.com. Sponsored by LMF Feeds. ■ Tips for Feeding Horses That Are Messy Eaters. TheHorse.com/165799 ■ Feeding an Easy Keeper on Stall Rest. TheHorse.com/164957 ■ HORSE HEALTH This award-winning e-newsletter offers news on diseases, veterinary research, and health events, along with in-depth articles on common equine health conditions. Supported by Zoetis . ■ HORSE WELFARE AND INDUSTRY Get the latest news on equine welfare, industry happenings, and horse-related business. E-NEWSLETTERS Get Horse Health News Delivered To You! ■ SPECIALTY WEEKLY E-NEWSLETTERS ■ Nutrition ■ Soundness & Lameness ■ Reader Favorites MONTHLY E-NEWSLETTERS ■ Behavior ■ Breeding ■ Farm & Barn ■ Older Horse Care ■ Sports Medicine Thursday, March 14 ❙ 8 p.m. EDT Neck and Back Pain in Horses Learn what causes horses to experi- ence neck and back pain, how they're diagnosed, and ways to make your horse more comfortable. ASK THE HORSE LIVE! Visit TheHorse.com/ AskTheHorseLive 1 Creating and properly maintain- ing arena and racetrack footing is important not only for equine injury prevention but also for rider safety. In recent years it's been a growing research focus for scientists around the world. One of those researchers, Mick Peterson, PhD, is the director of the University of Kentucky (UK) Ag Equine Programs, a faculty member within UK's Biosystems and Agricul- tural Engineering Department, and ex- ecutive director of the Racing Surfaces Testing Laboratory (RSTL). The RSTL, founded by Peterson and Wayne McIlwraith, BVSc, PhD, DSc, FRCVS, Dipl. ACVS, a professor at Colorado State University's College of Veterinary Medicine and Biomedical Sciences, has a more than 10-year his- tory of examining surfaces at race- tracks and equestrian sports venues worldwide, developing protocols and standards, and offering recommenda- tions. Peterson is considered one of the world's premiere experts in testing of high-level competition surfaces. Regardless of whether the RSTL team is working on a track (dirt, turf, or synthetic) or arena, its objective of surface testing remains the same. Here, we'll focus on racetrack surface testing; a later article will address arenas. "The goal (of surface testing) is to create a consistent surface and to meet the needs of the event," Peterson said. Ensuring racetrack surfaces meet the established criteria is fairly straightforward, he said. One param- eter the surface testing team can use to determine if the surface is doing its job well is race times for a particular day. However, it is critical on those occasions when a horse is injured and/ or safety questions arise that complete data is available to ensure the safest possible surface is provided for racing. Testing track surfaces involves examining its composition, as well as how the footing performs during use. Once investigators perform these tests, they can make recommendations for improvement, whether it be the foot- ing's contents or how it's maintained. Surface testing isn't a one-time event; rather, its a regular part of track maintenance. Part of their goal is to ensure proper long-term surface maintenance. The Maintenance Qual- ity System (MQS), which Peterson and the RSTL developed, involves a methodical approach of assessing and maintaining the surface prior to every event; it also assists track maintenance workers in enhancing the maintenance protocols already in place. This is the fi rst in a series of articles looking at the testing and maintenance of equine competition surfaces worldwide. N o matter the discipline—be it a horse race, show jumping competition, dressage test, reining pattern, or any other equine events that take place every year—all have one singular requirement they need to take place: appropriate and safe footing. In is Issue Feeding Healthy Senior Horses 02 Cold Spells Stress Livestock 05 Dr. Uneeda Bryant Recognized 07 Mineral of the Month: Zinc 10 Engineers inspect tracks prior to a race meet or before a change in season, depending on how long the venue operates each year, to ensure it is fully prepared for a safe competition. ANNE M. EBERHARDT/THE HORSE CA.UKY.EDU/EQUINE ❙ THEHORSE.COM ❙ JANUARY 2018 B R O U G H T T O Y O U B Y PART ONE: AN INTRODUCTION TO SURFACE TESTING Surface Testing: Keeping Horse and Rider Safety in Mind ■ Bluegrass Equine Digest is published monthly in partnership with UK Ag Equine and the Gluck Equine Research Center and is supported by Zoetis . This download may be reprinted and distributed in this exact form for educational purposes only in print or electronically. It may not be used for commercial purposes in print or electronically or republished on a website, forum, or blog. For more horse health information on this and other topics visit www.TheHorse.com . Published by The Horse: Your Guide To Equine Health Care, © Copyright 2018 The Horse Media Group. Contact editorial@TheHorse.com . 1 3 F a c t s A b o u t F e s c u e To x i c o s i s M i c r o s c o p i c a l k a l o i d - p r o d u c i n g e n d o p h y t e s i n p a s t u r e s c o n t a i n i n g t a l l f e s c u e c o u l d t h r e a t e n t h e h e a l t h o f y o u r m a r e a n d h e r f u t u r e f o a l . Round broodmares grazing on lush pastures might make an idyllic picture, but danger could lurk in the grass. Fescue toxicosis can cause gestational complications and potentially kill both mares and their unborn foals; however, tall fescue itself isn't behind the disease. Rather, a specific chemical produced by a fungus that can live within the tall fescue plant is the culprit. e fungus benefits the plant but is devastating for pregnant mares that graze on pastures or eat hay or bedding containing infected tall fescue. In this special report, you'll learn more about this disease, its cause, prevention, and available treatment. Special Report ISTOCK.COM PAG E 1 O F 2 1 Tall fescue is one of the most widely grown perennial grasses in the world and covers approximately 37 million acres in the United States alone, according to the University of Kentucky. eHorse.com/164765 2 An endophyte (a fungus that lives within a plant) infects certain tall fescue varieties and produces the alkaloid ergovaline, which can be toxic to grazing animals. TheHorse.com/129393 3 e endophyte has a symbiotic relation - ship with tall fescue: e plant provides the endophyte a place to thrive while alkaloids make tall fescue insect-resistant, as well as drought and grazing tolerant. eHorse.com/138059 4 Endophytes live between the plant's cells. TheHorse.com/156234 S P O N S O R E D B Y 6 In a natural setting, endophyte infection is passed from a parent plant to one it produces; an endophyte-free plant cannot become infected through endophyte exposure. TheHorse.com/156234 7 Pregnant mares consuming endophyte- infected tall fescue are at risk of developing fescue toxicosis. eHorse.com/161327 5 Researchers have found that ergovaline, causes vasoconstriction in all classes of horses; however only broodmares appear to be negatively affected by this. eHorse.com/156234 8 Nonpregnant mares consuming endophyte-infected tall fescue can experience extended luteal function and decreased breeding efficiency. TheHorse.com/156234

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