Den bedste måde at få en fuldstændig præcis måling af hestens vægt på er husdyrskala. Nogle dyrlæge klinikker har husdyr skalaer og nogle kan have bærbare vægte. Auktionsstalde har ofte skalaer.
Det kan være muligt for dig at få din hest vejet på en skala, hvis du tager ham til et af disse steder. Du kan også være i stand til at veje din hest på lastvognskala, men du skal lægge din hest på din trailer for at tage ham der og veje hele riggen med og uden hesten på. Hestens vægt vil være forskellen mellem de to vægte. Hvis du vejer din hest på en anden dag end du vejer din tomme trailer, vil ting som hvor meget gear du har stuvet og hvor meget brændstof der er i tanken påvirke totalvægten. Lastskalaer er ikke så fint kalibreret som husdyr skalaer, så vægten kan være så meget som 20 eller 40 lbs, afhængigt af hvordan skalaerne er opstillet. At få en vægt på denne måde er vanskelig og tidskrævende. Hvis du ikke kan få din hest på husdyr skala, kan du tilnærme sin vægt ved at måle kroppen. En omtrentlig vægt kan måles med en særlig vægt tape. Vægt tapes fås hos tackbutikker og foderbutikker. De er billige og nemme at bruge. De er ikke helt korrekte, fordi de kun måler rundt om hestens omkreds og ikke tager hensyn til andre ting som fedt / muskelforhold, højde, kropstype og overordnet tilstand. Lad din hest binde sikkert og stå stille. Målebåndet måles rundt om hesten, så båndet går rundt omkretsområdet, og op over hesten, lige bag skåle. Tag målingen, hvor båndets ende møder skalaen på båndet. Hvis du sporer din hestes vægt, skal du være forsigtig med at placere båndet på det samme sted hver gang og hold det med samme spænding. Hvis du har en pony eller et fælle, er det måske ikke en præcis tape, der er lavet til modne heste. Vægtbånd til bestemte kropstyper kan købes, men er fejlvisende på andre kropstyper en den beregnet. Du behøver dog ikke en særlig vægt tape for at få en omtrentlig vægt. Du kan bruge et almindelig målebånd eller et stykke garn, som du måler. Dette vægtdiagram på OMAFRA-stedet kan derefter bruges til at bestemme en omtrentlig vægt. En anden måde at finde en omtrentlig vægt på er at måle rundt om hesten som beskrevet og tage en ekstra måling fra hestens skulderpunkt til "kanten" af haunchen.Med denne måling kan du så lave en smule matematik: omkreds x omkreds x kropslængde ÷ 300 = Hestens vægt. Ja, du multiplicerer målingen omkring omkredsen to gange. Du kan også se dette omtalt som hjerteomkreds. Så hvis din hest er 76 tommer rundt og 38 tommer lang, vil du beregne 76 x 76 x 38 ÷ 300 = 782 lbs. Omkredsen x omkredsen x kropslængden ÷ 300 = Hestens vægtmetode er den traditionelle formel til estimering af vægt, men der findes andre formler. En bedre "vejning" for heste: Equine Weight Estimation ser på nøjagtigheden af almindelige formler og præsenterer en lidt anden måde at måle og beregne vægt på. Denne beregning vil ikke være lige så præcis for ponyer og føl. Her er en formel til beregning af føllens vægt. For at anslå en miniaturehest vægt kan denne beregningsvægt på minis formel anvendes. Det er vigtigt at huske, at alle disse metoder, bortset fra husdyrskalaen, vil være skøn. Disse estimater skal være tilstrækkelige til beregning af foder, medicin og kosttilskud. Hvis du har brug for en meget præcis vægt, skal du kontakte din dyrlæge for at få den bedste tilgang.
0 Kommentarer
Growing horses have unique healthcare needs. Our experts will help keep you up-to-date with the latest recommendations for taking care of growing horses. http://www.thehorse.com/videos/32054/newborn-to-maturity-caring-for-the-growing-horse
Kissing, while generally considered favorable in its usual context, isn't always so great when it comes to horses' vertebral surfaces. Overriding spinous processes--known as kissing spines--can cause severe back pain, according to Tracy Turner, DVM, MS, Dipl. ACVS, but not all horses with the condition have complications because of it. At the 2011 American Association of Equine Practitioners Convention, held Nov. 18-22 in San Antonio, Texas, Turner described a study in which he determined kissing spines are more likely to cause clinical problems in certain breeds, disciplines, and ages, and that a particular combination of therapies can produce successful outcomes. Turner, of Anoka Equine Veterinary Services, in Elk River, Minn., said back pain has been shown to be a major cause of poor performance and clinical signs are highly variable. Such is the case with kissing spines, so he sought to better define the condition, its detection, and treatments. "It's not hard to understand why back pain or anything that interferes with a horse's back will interfere with its movement," said Turner. "Any contraction in the (back) muscles causes ventral (toward the abdomen) flexion of the spine, which makes it impossible for the horse to engage its hind end and meet its athletic potential." Of 4,407 horses Turner examined for lameness from Feb. 1, 2004, to Jan 31, 2011, 7% of the cases, or 310 horses, displayed back pain (reacted with pain to pressure applied along the topline or resisted or showed agitation to such pressure). He conducted a complete lameness exam, including thermography and radiography, on each of these horses to rule out other potential pain causes. This narrowed the group to 212 horses (68% of the back pain horses) with kissing spines. Turner's study was comprised of the following groups:
Mild kissing spines are seen in the top image, while the bottom image depicts a more severe case. Horses' ground behavior in the back pain groups ranged from hypersensitivity when brushed to girthiness when saddled. When ridden, horses bucked, reared, kicked out, and displayed rear limb dragging, head tossing, and excessive shying. Riders complained these horses were hard to get on the bit, hollow, behind the leg, slow to warm up, stiffer one direction, and exhibited poor transitions. Thermography is a very useful method for detecting where the pathology might be in the horses with kissing spines (99% sensitivity, but only 70% specificity), Turner said, but the condition must be confirmed using spinal radiography. Pathology in the Group 1 cases occurred between T11 and L2 (11th thoracic vertebra and second lumbar). "In 90% of cases, T15 was involved," noted Turner. "Not surprising, because the vertebrae change direction there." Kissing spines most commonly occurred between T15 and T18, which is roughly where the seat of the saddle is in the ridden horse. The median number of vertebrae involved in the painful horses was four. "Dressage horses were distinctly overrepresented," he observed. "Dressage is one-third of eventing, so over 50% of horses with kissing spines (in this study) are in some kind of dressage." So, why dressage horses? "There are a lot of arguments ... the horse is asked to engage its hind end, the rider does more sitting, and the horse is compressed more," Turner opined. Also, "Dressage riders are so attuned to how that horse moves (so it may be that) they complain sooner than other riders," and, thus, these horses made it in for veterinary exams. Treatments Turner employed in the Group 1 animals included shock wave therapy, mesotherapy (multiple intradermal--in the skin--injections made over the back, croup, and withers), corticosteroid injections, saddle fitting changes, and exercise. He assessed outcomes using owner and veterinarian evaluations of efficacy. He found:
To counteract the ventroflexion (flexion of the cervical spine towards the underside of the barrel), a horse with back pain needs to be worked and trained to lift up his back as a part of recovery, he explained. And, importantly, veterinarians should employ a combination of medical treatment and other approaches to address kissing spine-related pain. Kissing spines are more likely to cause clinical problems in certain breeds, disciplines, and age groups. Mild kissing spines are seen in the top image, while the bottom image depicts a more severe case.
Editor's note: This article is part of TheHorse.com's ongoing coverage of topics presented at the 2012 American College of Veterinary Internal Medicine Forum, held May 30 - June 2 in New Orleans, La. Many equestrians, at one time or another, have dismounted after a long or strenuous ride and thought, "Boy, are my legs are going to be sore tomorrow!" Your horse has probably experienced a similar sensation, and as one researcher recently explained, a variety of muscle problems can cause a decrease in athletic performance in horses. At the 2012 American College of Veterinary Internal Medicine Forum, held May 30 - June 2 in New Orleans, La., Erica C. McKenzie, BSc, PhD, Dipl. ACVIM, ACVSMR, associate professor of large animal medicine at Oregon State University, gave an overview of some common muscle problems that affect equine athletic performance. "Equine athletes have proportionally greater muscle mass than comparably athletic species, with muscle tissue comprising approximately 45% of body weight in most equine breeds, and up to 55% of body weight in the Thoroughbred," she explained. Thus, muscle problems can have a profound impact on performance quality. Muscle Soreness and Strain McKenzie explained that the degree of muscle strain and soreness horses experience, and the muscles affected, often depends on the activity in which they compete or train. "Athletic horses may participate in brief, intense athletic events; prolonged endurance events; events that require a combination of activities (such as jumping and dressage); or events that require the horse to perform athletic activities while sustaining a demanding body position, such as working in a collected frame or sliding stops," she said. Further, she noted, horses ill-prepared for the work load they're asked to carry out can also develop muscle soreness and/or strains. Additional factors that can contribute to the frequency of muscle soreness or strains include inadequate warm-up time or methods, preexisting conditions, working the horse to the point of fatigue, and partaking in activities the horse isn't accustomed to, she said. Across the disciplines, common muscle groups affected include those located on the horse's back, hind quarters, shoulders, and legs, McKenzie said. "In many cases lo- grade muscle strain is subtle enough clinically to go unnoticed," she said. Clinical signs or indicators of muscle soreness or strain range in severity depending on the injury, McKenzie said; these signs include:
The treatment of muscle soreness and/or strain is based around rest or reduced activity, McKenzie said. Short-term anti-inflammatory medications and icing therapy might be beneficial, as well, she noted. In addition, "accessory modalities"--such as physical therapy, therapeutic ultrasound, cold laser, acupuncture, electromagnetic therapy, massage, and spinal manipulation--can be beneficial in helping affected horses return to work. "The prognosis for full return to function is usually good for mild injuries, but more guarded for chronic recurrent injuries or in cases where horses will continue to perform an activity that carries a high probability of repeated aggravation," she said. Back Pain McKenzie then discussed spinal muscle abnormalities, a "frequent cause of abnormal hind limb motion in performance horses." Back pain caused by spinal muscle pathology is likely frequent in performance horses and Thoroughbred racehorses, she said. Diagnosis begins with a detailed examination of the spinal region to look for evidence of muscular or osseous pathology, she explained. If evidence is identified, she recommends investigating the area further using ultrasonography, thermography, radiography, or nuclear scintigraphy. "A remarkable number of rehabilitative modalities are now available, and back pain is one of the most likely phenomena to benefit from their application," McKenzie added. Tying Up Finally, McKenzie discussed exertional rhabdomyolysis (commonly known as tying-up), which she describes as "the most important and prevalent muscular cause of poor performance in athletic horses." A few different groups of horses are known to be affected by exertional rhabdomyolysis, and McKenzie described each group and how their form of tying-up is characterized:
Muscular causes of poor performance in equine athletes are relatively common. Understanding what to look for and how to treat the disorders can help a performance horse successfully return to work. Muscular causes of poor performance, such as tying up and back pain, are relatively common in equine athletes. Understanding what to look for and how to treat the disorders can help a performance horse successfully return to work.
Photo: The Horse Staff Editor's note: This article is part of TheHorse.com's ongoing coverage of topics presented at the 2012 American College of Veterinary Internal Medicine Forum, held May 30 - June 2 in New Orleans, La. Many equestrians, at one time or another, have dismounted after a long or strenuous ride and thought, "Boy, are my legs are going to be sore tomorrow!" Your horse has probably experienced a similar sensation, and as one researcher recently explained, a variety of muscle problems can cause a decrease in athletic performance in horses. At the 2012 American College of Veterinary Internal Medicine Forum, held May 30 - June 2 in New Orleans, La., Erica C. McKenzie, BSc, PhD, Dipl. ACVIM, ACVSMR, associate professor of large animal medicine at Oregon State University, gave an overview of some common muscle problems that affect equine athletic performance. "Equine athletes have proportionally greater muscle mass than comparably athletic species, with muscle tissue comprising approximately 45% of body weight in most equine breeds, and up to 55% of body weight in the Thoroughbred," she explained. Thus, muscle problems can have a profound impact on performance quality. Muscle Soreness and Strain McKenzie explained that the degree of muscle strain and soreness horses experience, and the muscles affected, often depends on the activity in which they compete or train. "Athletic horses may participate in brief, intense athletic events; prolonged endurance events; events that require a combination of activities (such as jumping and dressage); or events that require the horse to perform athletic activities while sustaining a demanding body position, such as working in a collected frame or sliding stops," she said. Further, she noted, horses ill-prepared for the work load they're asked to carry out can also develop muscle soreness and/or strains. Additional factors that can contribute to the frequency of muscle soreness or strains include inadequate warm-up time or methods, preexisting conditions, working the horse to the point of fatigue, and partaking in activities the horse isn't accustomed to, she said. Across the disciplines, common muscle groups affected include those located on the horse's back, hind quarters, shoulders, and legs, McKenzie said. "In many cases lo- grade muscle strain is subtle enough clinically to go unnoticed," she said. Clinical signs or indicators of muscle soreness or strain range in severity depending on the injury, McKenzie said; these signs include:
The treatment of muscle soreness and/or strain is based around rest or reduced activity, McKenzie said. Short-term anti-inflammatory medications and icing therapy might be beneficial, as well, she noted. In addition, "accessory modalities"--such as physical therapy, therapeutic ultrasound, cold laser, acupuncture, electromagnetic therapy, massage, and spinal manipulation--can be beneficial in helping affected horses return to work. "The prognosis for full return to function is usually good for mild injuries, but more guarded for chronic recurrent injuries or in cases where horses will continue to perform an activity that carries a high probability of repeated aggravation," she said. Back Pain McKenzie then discussed spinal muscle abnormalities, a "frequent cause of abnormal hind limb motion in performance horses." Back pain caused by spinal muscle pathology is likely frequent in performance horses and Thoroughbred racehorses, she said. Diagnosis begins with a detailed examination of the spinal region to look for evidence of muscular or osseous pathology, she explained. If evidence is identified, she recommends investigating the area further using ultrasonography, thermography, radiography, or nuclear scintigraphy. "A remarkable number of rehabilitative modalities are now available, and back pain is one of the most likely phenomena to benefit from their application," McKenzie added. Tying Up Finally, McKenzie discussed exertional rhabdomyolysis (commonly known as tying-up), which she describes as "the most important and prevalent muscular cause of poor performance in athletic horses." A few different groups of horses are known to be affected by exertional rhabdomyolysis, and McKenzie described each group and how their form of tying-up is characterized:
Muscular causes of poor performance in equine athletes are relatively common. Understanding what to look for and how to treat the disorders can help a performance horse successfully return to work. ABOUT THE AUTHORErica Larson, News EditorErica Larson, news editor, holds a degree in journalism with an external specialty in equine science from Michigan State University in East Lansing. A Massachusetts native, she grew up in the saddle and has dabbled in a variety of disciplines including foxhunting, saddle seat, and mounted games. Currently, Erica competes in eventing with her OTTB, Dorado. A recently published French study suggests a horse's neck posture might indicate correlating back pain.In their two-part study, the researchers aimed to first validate the use of static electromyography (sEMG) as an alternative to manual evaluation of vertebral disorders, and then to establish a relationship between neck postures and back disorders. "The use of sEMG measures is fairly new (to veterinary practice) and concerns mostly the study of muscles and back functioning during movement," explained lead researcher Clémence Lesimple, PhD, of the University of Rennes. The team employed two groups of nine horses in the study: Group 1 consisted of pastured horses used for occasional leisure riding while Group 2 included stalled riding school horses, exercised 4-12 hours per week. For the first part of the study, both groups of horses underwent chiropractic and sEMG evaluation in order for researchers to compare findings from both methods. Second, researchers evaluated horses' neck postures. The team placed five self-adhesive markers in specific anatomical locations along the right side of each horse, beginning at withers and ending at the lower point of the facial crest (between eye and nostril). Horses were then photographed both at rest and during different phases of the walk. Researchers subsequently used the photographs to measure angles between markers. Key findings included:
"If postures are to be a useful tool ... their measure needs to be possible in the home environment of the animal and should lead to few reliable but clearly visible markers," the researchers stressed. The study, "Towards a Postural Indicator of Back Pain in Horses (Equus cabullus)," appeared in Plos One in September 2012. The entire article can be viewed online. ABOUT THE AUTHORCasie Bazay, NBCAAMCasie Bazay holds a bachelor of science degree in education from Oklahoma State University. She taught middle school for ten years, but now is a nationally certified equine acupressure practitioner and freelance writer. She has owned Quarter Horses nearly her entire life and has participated in a variety of horse events including Western and English pleasure, trail riding, and speed events. She was a competitive barrel racer for many years and hopes to pursue the sport again soon.
https://www.youtube.com/watch?v=tPPo_6_Ti3E
https://www.youtube.com/watch?v=sENtuo5yZcc
https://www.youtube.com/watch?v=q6FgfToxMd4
https://www.youtube.com/watch?v=wWqRK5xAhg8
|
Forfattervigtige artikler. Arkiver
Juli 2019
Kategorier |