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Rogers, C.W.; Davies, A.S.; Pfeiffer, D.U.; Davie, P.S. |
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Title |
Linear and temporal stride characteristics of 3-day event horses at a CCI*** 3-day event horse inspection |
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Journal Article |
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Year |
1999 |
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New Zealand Veterinary Journal |
Abbreviated Journal |
N Z Vet J |
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47 |
Issue |
6 |
Pages |
193-197 |
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Abstract |
AIMS: To quantify the linear and temporal characteristics of the trot of 3-day event horses during the preliminary horse inspection of an advanced grade CCI* 3-day event. METHODS: A cross sectional study was made of the kinematics of 24 3-day-event horses during the first horse inspection at a CCI* level S-day event. Video footage was digitised and linear and temporal measurements were made. RESULTS: The horses trotted for an average of 10.44+/-1.55 strides. Spatial measurements were made on an average of 5.66+/-0.92 consecutive strides when the horses were within the calibration zone. The horses increased and then obtained a constant velocity within the calibration zone. Trotting on the asphalt track did not alter the relationships between stride length, stride duration and velocity when compared with previously published values. Horse-specific differences in stance and retraction percentages were identified. CONCLUSION: Horse specific differences were identified that may contribute to each horse's unique gait or kinematic fingerprint. It is proposed that the initiation of, and completion of, stance by the hind limb first may represent engagement of the hind quarters and be a response to dressage training. |
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Equine Research, New Zealand |
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0048-0169 |
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PMID:16032102 |
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Call Number |
Equine Behaviour @ team @ |
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3714 |
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Author |
Murray, R.C.; Branch, M.V.; Dyson, S.J.; Parkin, T.D.H.; Goodship, A.E. |
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Title |
How does exercise intensity and type affect equine distal tarsal subchondral bone thickness? |
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Journal Article |
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Year |
2007 |
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Journal of Applied Physiology (Bethesda, Md. : 1985) |
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J Appl Physiol |
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102 |
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6 |
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2194-2200 |
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Adaptation of osteochondral tissues is based on the strains experienced during exercise at each location within the joint. Different exercise intensities and types may induce particular site-specific strains, influencing osteochondral adaptation and potentially predisposing to injury. Our hypotheses were that patterns of equine distal tarsal subchondral bone (SCB) thickness relate to the type and intensity of exercise, and that high-intensity exercise leads to site-specific increases in thickness. SCB thickness was measured at defined dorsal and plantar locations on magnetic resonance images of cadaver tarsi collected from horses with a history of low [general purpose (n=20) and horse walker (n=6)] or high [elite competition (n=12), race training (n=15), and treadmill training (n=4)] exercise intensity. SCB thickness was compared between sites within each exercise group and between exercise groups. SCB thickness in elite competition and race training, but not treadmill training, was greater than low-intensity exercise. For general purpose horses, lateral SCB thickness was greater than medial throughout. Horse walker exercise led to relatively thicker lateral and medial SCB compared with the midline. Elite competition was associated with increased SCB thickness of the proximal small tarsal bones medially and the distal bones laterally. For race training and treadmill training, there were minimal differences between sites overall, although the lateral aspect was greater than medial, and medial greater than midline at a few sites for race training. In conclusion, different types of high-intensity exercise were associated with different patterns of SCB thickness across the joints from medial to lateral and proximal to distal, indicating that both exercise intensity and type of exercise affect the SCB response at any particular site within the equine distal tarsal joints. |
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Animal Health Trust, Lanwades Park, Kentford, Newmarket, Suffolk CB8 7UU, United Kingdom. rachel.murray@aht.org.uk |
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8750-7587 |
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PMID:17332271 |
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Equine Behaviour @ team @ |
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4021 |
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Miller-Butterworth, C.M.; Kaplan, J.R.; Barmada, M.M.; Manuck, S.B.; Ferrell, R.E. |
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Title |
The Serotonin Transporter: Sequence Variation in Macaca fascicularis and its Relationship to Dominance |
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Journal Article |
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2007 |
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Behav Genet |
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Specific genotypes of the rhesus monkey and human serotonin transporter gene (SERT) promoter region are associated with personality traits and serotonergic activity. However, the most commonly studied promoter polymorphism (5-HTTLPR) is monomorphic in many other monkey species. To date, no systematic search for alternative potentially functional polymorphisms across the remaining coding parts of the gene has been undertaken in other primate species, despite the crucial role SERT plays in modulating serotonergic tone. We investigated whether sequence variation in this gene is associated with social rank and serotonin metabolite (5-HIAA) differences in 524 cynomolgus macaques. Sequence variation and extent of linkage disequilibrium (LD) across the regulatory and coding regions were initially characterized in 92 macaques. The exons and promoter contained 28 polymorphisms, more than double that recorded for human SERT. In further contrast to humans, the macaque SERT showed no significant LD. Potentially functional polymorphisms were genotyped in all animals. No individual variants or haplotypes were significantly associated with social rank or 5-HIAA concentrations; however, certain serotonin transporter diplotypes may modulate acquisition of dominance status. |
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Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, A300 Crabtree Hall, 130 De Soto Street, Pittsburgh, PA, USA, cbutterworth@hgen.pitt.edu |
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0001-8244 |
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PMID:17605101 |
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Equine Behaviour @ team @ |
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4104 |
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Buechner-Maxwell, V.A.; Elvinger, F.; Thatcher, C.D.; Murray, M.J.; White, N.A.; Rooney, D.K. |
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Title |
Physiological Response of Normal Adult Horses to a Low-Residue Liquid Diet |
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Journal Article |
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2003 |
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Journal of Equine Veterinary Science |
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23 |
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7 |
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310-317 |
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Abstract The anorexic or dysphagic adult horse often requires nutritional support. Providing nutrients by the enteral route is the safest and most economic choice, but the dietary options available for use in horses are somewhat limited. The objective of this study was to compare the physiologic response of normal horses with a low-residue liquid or normal diet over a 10-day feeding period. Two groups of 6 normal adult horses were maintained on 1 of 2 diets for a 10-day period. Diets were formulated to meet the caloric needs of a horse maintained in a stall. The control group was fed 70% timothy hay and 30% textured concentrate for the test period, and the experimental group received the low-residue liquid diet, similar to liquid nutritional formulas designed for human use. Clinical parameters, body weight, packed cell volume, total plasma solids, blood glucose, and serum electrolytes were recorded daily for each horse during the dietary trial period. On days 1, 5, and 10 of the study, a complete blood count, serum biochemical profile, and urinalysis were performed. Horses' serum total bilirubin concentration and pattern of weight loss differed between groups. All other physical parameters, blood chemistry, complete blood count, and urinalysis results remained within the normal reference interval for the horses regardless of diet, although some statistical differences were observed. Horses returned to pasture and free-choice grass diet without complications at the end of the dietary trial period. These results demonstrate that few differences of biologic significance were observed between horses being fed low-residue diet and horses receiving a normal diet of hay and grain over a 10-day period. (Equine Vet J 2003;23:310-317) |
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Equine Behaviour @ team @ |
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4229 |
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Parry, B.W.; Gay, C.C.; McCarthy, M.A. |
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Influence of head height on arterial blood pressure in standing horses |
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1980 |
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American Journal of Veterinary Research |
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41 |
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10 |
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1626-1631 |
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Cited By (since 1996): 4; Export Date: 21 October 2008 |
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Equine Behaviour @ team @ |
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4539 |
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Dalin, G.; Magnusson, L.E.; Thafvelin, B.C. |
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Retrospective study of hindquarter asymmetry in Standardbred trotters and its correlation with performance |
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1985 |
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Equine Vet. J. |
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17 |
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292-296 |
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Cited By (since 1996): 8; Export Date: 24 October 2008 |
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Admin @ knut @ |
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4579 |
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Ripple, W.J.; Estes, J.A.; Beschta, R.L.; Wilmers, C.C.; Ritchie, E.G.; Hebblewhite, M. |
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Title |
Status and ecological effects of the world's largest carnivores |
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2014 |
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Science |
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343 |
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Equine Behaviour @ team @ Ripple2014 |
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6445 |
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Chapron, G.; Kaczensky, P.; Linnell, J.D.C.; Arx, M.; Huber, D.; Andrén, H. |
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Recovery of large carnivores in Europe's modern human-dominated landscapes |
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2014 |
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346 |
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Equine Behaviour @ team @ Chapron2014 |
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6451 |
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Blanco, J.C.; Yolanda, C. |
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Surveying wolves without snow: a critical review of the methods used in Spain. Hystrix |
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2012 |
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Ital J Mammal |
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23 |
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Equine Behaviour @ team @ Blanco2012 |
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6460 |
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Dugnol, B.; Fernández, C.; Galiano, G. |
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Wolf population counting by spectrogram image processing |
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2007 |
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Appl Math Comput |
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186 |
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Equine Behaviour @ team @ Dugnol2007 |
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6464 |
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