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Equine Veterinary Journal

A Azarvandi, A R Khosravi, H Shokri, M Talebkhan Garoussi, F Gharahgouzlou, G Vahedi, A Sharifzadeh
BACKGROUND: Yeasts are commensal organisms found in the reproductive and gastrointestinal tracts, and on the skin and other mucosa in mammals. OBJECTIVES: The purpose of this study was to isolate and identify the yeast flora in the caudal reproductive tract of healthy female horses. STUDY DESIGN: Longitudinal study. METHODS: A total of 453 samples were collected using double guarded swabs from the vestibule, clitoral fossa and vagina of 151 horses...
December 8, 2016: Equine Veterinary Journal
A Pease, T Mair, M Spriet
No abstract text is available yet for this article.
December 7, 2016: Equine Veterinary Journal
L S Goehring, K Brandes, L V Ashton, L A Wittenburg, F J Olea-Popelka, D P Lunn, G Soboll Hussey
BACKGROUND: Equid Herpesvirus-associated Myeloencephalopathy is the result of endothelial cell infection of the spinal cord vasculature with EHV-1 during cell-associated viraemia. Endothelial cell infection requires contact between infected peripheral blood mononuclear and endothelial cells. Inflammation generated during viraemia likely up-regulates adhesion molecule expression on both cell types increasing contact and facilitating endothelial cell infection. OBJECTIVES: Evaluating the role of anti-inflammatory drugs in decreasing endothelial cell infection with EHV-1...
November 19, 2016: Equine Veterinary Journal
S Jonsdottir, V Svansson, S B Stefansdottir, E Mäntylä, E Marti, S Torsteinsdottir
BACKGROUND: Insect bite hypersensitivity is an IgE-mediated dermatitis of horses initiated by bites of midges of the genus Culicoides. Culicoides spp. are not indigenous to Iceland and the prevalence of insect bite hypersensitivity is much higher in horses born in Iceland and exported as compared to Icelandic horses born in a Culicoides rich environment. Immunotherapy is therefore needed. OBJECTIVES: The aim of the study was to express an allergen from Culicoides in barley grain and investigate whether an immune response could be obtained in healthy Icelandic horses by oral treatment with transgenic barley expressing the allergen...
November 17, 2016: Equine Veterinary Journal
M Ploeg, A Gröne, C H A van de Lest, V Saey, L Duchateau, P Wolsein, K Chiers, R Ducatelle, P R van Weeren, M de Bruijn, C Delesalle
BACKGROUND: Aortic rupture is quite common in Friesian horses unlike in Warmblood horses and a hereditary trait is suspected in Friesians. The aortic connective tissue in affected Friesians shows histological changes such as medial necrosis, elastic fibre fragmentation, mucoid material accumulation and fibrosis with aberrant collagen morphology. However, ultrastructural examination of the collagen fibres of the mid-thoracic aorta was inconclusive when trying to further elucidate the pathogenesis of the disease...
November 16, 2016: Equine Veterinary Journal
C L McGivney, J Sweeney, F David, J M O'Leary, E W Hill, L M Katz
BACKGROUND: Previous studies support good intra- and inter-observer agreements for endoscopic evaluation of various upper respiratory tract (URT) diseases in horses. However, these studies mainly assessed resting endoscopic examination videos and/or focussed on a single URT abnormality. OBJECTIVES: To estimate intra- and inter-observer agreement for identification and grading of all URT abnormalities from resting and overground endoscopy (OGE) videos of Thoroughbreds...
November 14, 2016: Equine Veterinary Journal
F M Bragança, S Bosch, J P Voskamp, M Marin-Perianu, B J Van der Zwaag, J C M Vernooij, P R van Weeren, W Back
BACKGROUND: Inertial-measurement-unit (IMU)-sensor-based techniques are becoming more popular in horses as a tool for objective locomotor assessment. OBJECTIVES: To describe, evaluate and validate a method of stride detection and quantification at walk and trot using distal limb mounted IMU-sensors. STUDY DESIGN: Prospective validation study comparing IMU-sensors and motion capture with force plate data. METHODS: Seven Warmblood horses equipped with metacarpal/metatarsal IMU-sensors and reflective markers for motion capture were hand walked and trotted over a force plate...
November 12, 2016: Equine Veterinary Journal
T J Henry, S M Puchalski, B Arzi, P H Kass, F J M Verstraete
BACKGROUND: There are several reports of incisor tooth resorption and hypercementosis in horses but to date studies have been limited in case numbers and to advanced lesions. Tooth resorption in other species is a radiographic diagnosis of types of resorption that are often identified before clinical signs. Our goal was to evaluate radiographically incisor tooth resorption in a large population of horses, utilising interpretation criteria from canine and human dentistry. OBJECTIVE: To document and classify incisor tooth resorption and hypercementosis...
November 12, 2016: Equine Veterinary Journal
Barbara K Braus, Birgit Lehenauer, Alexander Tichy, Barbara Nell, Ilse Schwendenwein
BACKGROUND: Cytology plays a major role in the diagnosis of ocular surface diseases. OBJECTIVE: To compare two cytologic sampling methods for obtaining corneal and conjunctival cell samples regarding irritation for the patient, invasiveness, sample quality and diagnostic equivalence. STUDY DESIGN: Observational prospective study. METHODS: In 5 healthy horses, conjunctival and corneal samples were taken bilaterally by ICS (impression cytology sampling) and CBS (cytobrush sampling)...
November 12, 2016: Equine Veterinary Journal
B M C Gorissen, C F Wolschrijn, F M Serra Bragança, A A J Geerts, W O J L Leenders, W Back, P R van Weeren
BACKGROUND: Foals stand and walk immediately after birth, but insight into the subsequent longitudinal development of their gait kinetics in the early juvenile phase and the possible influence of osteochondrosis thereon is lacking. OBJECTIVES: To quantify gait kinetics in foals during the first half year of life, taking into account their osteochondrosis status. STUDY DESIGN: Prospective, cohort study performed at a single stud farm. METHODS: Pressure plate measurements at walk and trot from eleven Dutch Warmblood foals during the first 24 weeks of life were used to determine body mass normalised peak vertical force, normalised vertical impulse and stance duration...
November 12, 2016: Equine Veterinary Journal
A K Berglund, L V Schnabel
REASONS FOR PERFORMING STUDY: Allogeneic mesenchymal stem cells (MSCs) are a promising cell source for treating musculoskeletal injuries in horses. Controversy exists, however, over whether major histocompatibility complex (MHC)-mismatched MSCs are recognised by the recipient immune system and targeted for death by a cytotoxic antibody response. OBJECTIVES: To determine if cytotoxic anti-MHC antibodies generated in-vivo following MHC-mismatched MSC injections are capable of initiating complement-dependent cytotoxicity of MSCs...
November 10, 2016: Equine Veterinary Journal
S Smith, C M Marr, C Dunnett, N J Menzies-Gow
BACKGROUND: Birthweight of Thoroughbred foals has increased in recent years. It is unknown whether this is associated with increased broodmare obesity or endocrine dysfunction. OBJECTIVES: To determine insulin, leptin and triglyceride concentrations in Thoroughbred mares throughout gestation and investigate their association with obesity and foal birthweight. STUDY DESIGN: Cohort study. METHODS: 66 mares were included from 40 d post-breeding...
November 8, 2016: Equine Veterinary Journal
M Ploeg, V Saey, G van Loon, C Delesalle
The aorta can rupture at the aortic root or aortic arch. In most breeds, the aortic root is the likely site and rupture leads to aortocardiac fistula with communication between the aorta and the right atrium, right ventricle and/or the interventricular septum. There is a high prevalence of aortic rupture in young Friesian horses and rupture occurs at the aortic arch with pseudoaneurysm and potentially aortopulmonary fistulation. Echocardiographic and post-mortem techniques must be adapted to identify aortic arch rupture which is not generally identified with standard approaches...
October 26, 2016: Equine Veterinary Journal
A J Fairburn, E Busschers, A R S Barr
BACKGROUND: Suspensory ligament branch (SLB) desmopathy is a common cause of lameness and an important cause of lost training in the Thoroughbred racing industry. Studies have assessed the impact of insertional injuries of the SLB on the careers of flat racehorses and established the prevalence of subclinical ultrasonographic SLB abnormalities in this population, but little work has investigated SLB injury in National Hunt (NH) racehorses. OBJECTIVES: To investigate the prevalence of subclinical ultrasonographic SLB abnormalities in NH racehorses with no clinical signs or history of SLB injury and to establish the cross-sectional area (CSA) of SLBs in this population...
September 23, 2016: Equine Veterinary Journal
A Barstow, E Persson-Sjodin
No abstract text is available yet for this article.
November 2016: Equine Veterinary Journal
R S Pirie, B C McGorum
No abstract text is available yet for this article.
November 2016: Equine Veterinary Journal
J D Albright, T H Witte, B W Rohrbach, A Reed, K A Houpt
REASONS FOR PERFORMING STUDY: Crib-biting is a common oral stereotypy. Although most treatments involve prevention, the efficacy of various anti-crib devices, including surgically implanted gingival rings, has thus far not been empirically tested. OBJECTIVES: Demonstrate the effect that 2 anti-crib collars, muzzle and gingival rings have on crib-biting, other maintenance behaviours, and cortisol levels in established crib-biting horses. STUDY DESIGN: Randomised, crossover clinical trial...
November 2016: Equine Veterinary Journal
M C Costa, H R Stämpfli, E Allen-Vercoe, J S Weese
REASONS FOR PERFORMING STUDY: The intestinal microbiota is a complex polymicrobial ecosystem that exerts extremely important roles in the development and maintenance of health. Recently, as new sequencing technologies have become more available, there has been a revolution in the understanding of the equine intestinal microbiota. However, studies characterising the pioneer intestinal bacteria colonising foals and its development over time are still limited. OBJECTIVES: The objectives of this study were to characterise the intestinal bacterial colonisation of newborn foals and to follow individual animals over time until age 9 months...
November 2016: Equine Veterinary Journal
B C McGorum, R S Pirie, D Shaw, N Macintyre, A Cox
REASONS FOR PERFORMING STUDY: Diagnosis of equine grass sickness (EGS) can be challenging. We hypothesised that subgemmal plexus neurons are chromatolytic in EGS. If correct, histopathological examination of gustatory papillae biopsies could aid premortem diagnosis of EGS, and EGS could represent a spontaneous model of subgemmal neuronal chromatolysis to facilitate study of the pathology of structures involved in taste. OBJECTIVE: To compare subgemmal plexi and gustatory papillae in EGS and control horses...
November 2016: Equine Veterinary Journal
A Schoster, L Guardabassi, H R Staempfli, M Abrahams, M Jalali, J S Weese
REASONS FOR PERFORMING THE STUDY: The microbiota plays a key role in health and disease. Probiotics are a potential way to therapeutically modify the intestinal microbiota and prevent disease. OBJECTIVES: The aim of this study was to investigate the effects of probiotics on the bacterial microbiota of foals during and after administration. STUDY DESIGN: Randomised placebo controlled field trial. METHODS: Thirty-eight healthy neonatal foals enrolled in a previous study were selected...
November 2016: Equine Veterinary Journal
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