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Author Ryan, C.T.; Schaer, B.L.D.; Nunamaker, D.M.
Title A novel wireless data acquisition system for the measurement of hoof accelerations in the exercising horse Type Journal Article
Year 2006 Publication Equine Veterinary Journal Abbreviated Journal Equine Vet J
Volume 38 Issue 7 Pages 671-674
Keywords *Acceleration; Animals; Biomechanics; Equipment and Supplies/*veterinary; Hoof and Claw/*physiology; Horses/*physiology; Kinetics; Musculoskeletal Physiology; Physical Conditioning, Animal/*physiology; Running/physiology
Abstract REASONS FOR PERFORMING STUDY: A device is needed to safely and wirelessly evaluate accelerations experienced by the horse hoof under a variety of surface conditions with the horse exercising at training or racing speeds. OBJECTIVES: To develop a miniaturised wireless data acquisition system (WDAS) which reliably records hoof accelerations and the times over which they occur in a minimally invasive manner in the exercising Thoroughbred. METHODS: The following criteria were set for device development: production of a lightweight and minimally invasive system, which provides an adequate acceleration range, appropriate frequency response to capture high speed events, and compatibility with a low power wireless telemetry system. Following device development, the WDAS was calibrated, and tested in 6 Thoroughbred horses over a variety of surfaces. RESULTS: Collection of acceleration in seven trials using 6 horses over a variety of surfaces resulted in repeatable acceleration data with respect to the overall characteristic shape of the impact profile. Impact accelerations varied with surface, ranging 34.8-191.7 g. Accelerations on take off were in a similar range, although higher in some trials. Peak impact accelerations tended to larger over the grass paddock surface, than either the indoor arena or the dirt track. During dirt track trials, accelerations on take-off were often comparably larger than those observed on impact within the same footfall. CONCLUSIONS: This study reports the development of a wireless system that successfully measures hoof acceleration in a minimally invasive manner over a variety of surface and exercise conditions. POTENTIAL RELEVANCE: The WDAS will be used in further studies to evaluate various components of the horse-racetrack interface, in an attempt to identify risk factors for musculoskeletal injury in the Thoroughbred racehorse.
Address Richard S. Reynolds, Jr. Comparative Orthopedic Research Laboratory, Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, Pennsylvania 19348, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:17228584 Approved no
Call Number Equine Behaviour @ team @ Serial 4023
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Author Schaer, B.L.D.; Ryan, C.T.; Boston, R.C.; Nunamaker, D.M.
Title The horse-racetrack interface: a preliminary study on the effect of shoeing on impact trauma using a novel wireless data acquisition system Type Journal Article
Year 2006 Publication Equine Veterinary Journal Abbreviated Journal Equine Vet J
Volume 38 Issue 7 Pages 664-670
Keywords Animals; Equipment and Supplies/veterinary; Forelimb/injuries/physiology; Hindlimb/injuries/physiology; Hoof and Claw/*physiology; Horses/*injuries/*physiology; Locomotion/physiology; Muscle, Skeletal/injuries/*physiology; *Musculoskeletal Physiology; Musculoskeletal System/*injuries; Physical Conditioning, Animal/*physiology; Risk Factors; Running/physiology; Shoes
Abstract REASONS FOR PERFORMING STUDY: There is a need to determine accelerations acting on the equine hoof under field conditions in order to better assess the risks for orthopaedic health associated with shoeing practices and/or surface conditions. OBJECTIVES: To measure the acceleration profiles generated in Thoroughbred racehorses exercising at high speeds over dirt racetracks and specifically to evaluate the effect of a toe grab shoe compared to a flat racing plate, using a newly developed wireless data acquisition system (WDAS). METHODS: Four Thoroughbred racehorses in training and racing were used. Based on previous trials, each horse served as its own control for speed trials, with shoe type as variable. Horses were evaluated at speeds ranging from 12.0-17.3 m/sec. Impact accelerations, acceleration on break over and take-off, and temporal stride parameters were calculated. Impact injury scores were also determined, using peak accelerations and the time over which they occurred. RESULTS: Recorded accelerations for the resultant vector (all horses all speeds) calculated from triaxial accelerometers ranged 96.3-251.1 g, depending on the phase of the impact event. An association was observed between shoe type and change in acceleration in individual horses, with 2 horses having increased g on initial impact with toe grab shoes in place. In the final impact phase, one horse had an increase of 110 g while wearing toe grab shoes. Increased accelerations were also observed on break over in 2 horses while wearing toe grab shoes. CONCLUSIONS: Shoe type may change impact accelerations significantly in an individual horse and could represent increased risk for injury. Further work is needed to determine if trends exist across a population. POTENTIAL RELEVANCE: The WDAS could be used for performance evaluation in individual horses to evaluate any component of the horse-performance surface interface, with the goal of minimising risk and optimising performance.
Address Richard S. Reynolds Jr. Comparative Orthopedic Research Laboratory, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, Pennsylvania 19348, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:17228583 Approved no
Call Number Equine Behaviour @ team @ Serial 4024
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Author Bouchet, A.
Title [Anatomy lessons on animals] Type Journal Article
Year 2006 Publication Histoire des Sciences Medicales Abbreviated Journal Hist Sci Med
Volume 40 Issue 4 Pages 331-338
Keywords Anatomy/education/*history; Animals; Dissection/history; Education, Medical/history; Education, Veterinary/*history; France; History, 16th Century; History, 17th Century; History, 18th Century; History, 19th Century; History, 20th Century; Humans; Schools, Veterinary/history
Abstract The first anatomical studies were realized on the animal by Galen and Vesalius. Bourgelat created the first veterinarian school in Lyons, then in Paris where the famous dissection of a man on his horse can be seen (Fragonard). The Lafosse dynasty was interested in the study of the horse care and the painter Sollier showed the most beautiful coloured engravings about the horses. A chair of anatomy was created to compare the human and animal anatomy by the school of Jardin des Plantes en 1855.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language French Summary Language Original Title Les lecons d'anatomie sur les animaux
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0440-8888 ISBN Medium
Area Expedition Conference
Notes PMID:17526401 Approved no
Call Number Equine Behaviour @ team @ Serial 4000
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Author Brauer, J.; Kaminski, J.; Riedel, J.; Call, J.; Tomasello, M.
Title Making inferences about the location of hidden food: social dog, causal ape Type Journal Article
Year 2006 Publication Journal of comparative psychology Abbreviated Journal J Comp Psychol
Volume 120 Issue 1 Pages 38-47
Keywords Animals; Communication; Cues; Dogs; Exploratory Behavior; *Feeding Behavior; Female; *Food; Male; Pan paniscus; Pan troglodytes; *Visual Perception
Abstract Domestic dogs (Canis familiaris) and great apes from the genus Pan were tested on a series of object choice tasks. In each task, the location of hidden food was indicated for subjects by some kind of communicative, behavioral, or physical cue. On the basis of differences in the ecologies of these 2 genera, as well as on previous research, the authors hypothesized that dogs should be especially skillful in using human communicative cues such as the pointing gesture, whereas apes should be especially skillful in using physical, causal cues such as food in a cup making noise when it is shaken. The overall pattern of performance by the 2 genera strongly supported this social-dog, causal-ape hypothesis. This result is discussed in terms of apes' adaptations for complex, extractive foraging and dogs' adaptations, during the domestication process, for cooperative communication with humans.
Address Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. jbraeuer@eva.mpg.de
Corporate Author Thesis
Publisher Place of Publication Washington, D.C. : 1983 Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0735-7036 ISBN Medium
Area Expedition Conference
Notes PMID:16551163 Approved yes
Call Number refbase @ user @ Serial 597
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Author Hall, C.A.; Cassaday, H.J.; Vincent, C.J.; Derrington, A.M.
Title Cone excitation ratios correlate with color discrimination performance in the horse (Equus caballus) Type Journal Article
Year 2006 Publication Journal of comparative psychology (Washington, D.C. : 1983) Abbreviated Journal J Comp Psychol
Volume 120 Issue 4 Pages 438-448
Keywords Animals; Behavior, Animal; *Color Perception; *Discrimination (Psychology); Discrimination Learning; Horses; Photoreceptors, Vertebrate/*physiology
Abstract Six horses (Equus caballus) were trained to discriminate color from grays in a counterbalanced sequence in which lightness cues were irrelevant. Subsequently, the pretrained colors were presented in a different sequence. Two sets of novel colors paired with novel grays were also tested. Performance was just as good in these transfer tests. Once the horse had learned to select the chromatic from the achromatic stimulus, regardless of the specific color, they were immediately able to apply this rule to novel stimuli. In terms of the underlying visual mechanisms, the present study showed for the first time that the spectral sensitivity of horse cone photopigments, measured as cone excitation ratios, was correlated with color discrimination performance, measured as accuracy, repeated errors, and latency of approach.
Address School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Southwell, United Kingdom. carol.hall@ntu.ac.uk
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0735-7036 ISBN Medium
Area Expedition Conference
Notes PMID:17115866 Approved no
Call Number Serial 1780
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Author Schwab, C.; Huber, L.
Title Obey or not obey? Dogs (Canis familiaris) behave differently in response to attentional states of their owners Type Journal Article
Year 2006 Publication Journal of Comparative Psychology (Washington, D.C. : 1983) Abbreviated Journal J Comp Psychol
Volume 120 Issue 3 Pages 169-175
Keywords Animals; *Attention; Awareness; *Bonding, Human-Pet; *Cooperative Behavior; Cues; Dogs/*psychology; Humans; Motivation; *Nonverbal Communication; Social Perception; *Speech Perception; *Verbal Behavior
Abstract Sixteen domestic dogs (Canis familiaris) were tested in a familiar context in a series of 1-min trials on how well they obeyed after being told by their owner to lie down. Food was used in 1/3 of all trials, and during the trial the owner engaged in 1 of 5 activities. The dogs behaved differently depending on the owner's attention to them. When being watched by the owner, the dogs stayed lying down most often and/or for the longest time compared with when the owner read a book, watched TV, turned his or her back on them, or left the room. These results indicate that the dogs sensed the attentional state of their owners by judging observable behavioral cues such as eye contact and eye, head, and body orientation.
Address Department for Behavior, Neurobiology and Cognition, University of Vienna, Vienna, Austria. cpriberskyschwab@yahoo.de
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0735-7036 ISBN Medium
Area Expedition Conference
Notes PMID:16893253 Approved no
Call Number Equine Behaviour @ team @ Serial 4961
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Author Naylor, J.M.; Poirier, K.L.; Hamilton, D.L.; Dowling, P.M.
Title The effects of feeding and fasting on gastrointestinal sounds in adult horses Type Journal Article
Year 2006 Publication Journal of Veterinary Internal Medicine / American College of Veterinary Internal Medicine Abbreviated Journal J Vet Intern Med
Volume 20 Issue 6 Pages 1408-1413
Keywords Animals; Auscultation/methods/*veterinary; *Digestive Physiology; Fasting/*physiology; Gastrointestinal Motility/physiology; Gastrointestinal Transit/physiology; Horses/*physiology; Postprandial Period/*physiology; Sound
Abstract The effect of changes in feed intake on auscultatable gastrointestinal sounds has not been systematically studied. Disagreement also is present in the literature about variation in sounds according to the quadrant of auscultation. Gastrointestinal sounds were recorded over the center of the left dorsal, left ventral, right ventral, and right dorsal quadrants and over the middle of the right abdominal flank. During 24 hours (n = 4) or 48 hours (n = 5) of fasting, there was a reduction in the intensity of gastrointestinal sounds as assessed by analysis of sound recordings. There was also a reduction in the number of mixing-like and propulsive-like sounds heard by 2 blinded observers. After refeeding, there was a marked increase in sound. Sound intensity varied among abdominal quadrants, but blinded observers did not notice significant differences in the number of mixing-like sounds. The left dorsal quadrant was quieter than others during fasting and refeeding. The right ventral quadrant appeared to be least affected by fasting, and sounds were louder over the right ventral and right middle quadrants than over the others. The blinded observers' perceptions of sound correlated poorly with one another and with objective measures of sound intensity. This experiment demonstrates the effectiveness of computerized analysis of abdominal sound in detecting a reduction in the intensity of gastrointestinal sounds during fasting and their return during refeeding. The left dorsal quadrant was quieter than other quadrants, likely because of its position over the small colon. There was considerable observer variation in the number of intestinal sounds heard.
Address Department of Clinical Sciences, Ross University School of Veterinary Medicine, Basseterre, St Kitts, West Indies. jnaylor@rossvet.edu.kn
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0891-6640 ISBN Medium
Area Expedition Conference
Notes PMID:17186858 Approved no
Call Number Serial 1844
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Author Czeh, B.; Muller-Keuker, J.I.H.; Rygula, R.; Abumaria, N.; Hiemke, C.; Domenici, E.; Fuchs, E.
Title Chronic Social Stress Inhibits Cell Proliferation in the Adult Medial Prefrontal Cortex: Hemispheric Asymmetry and Reversal by Fluoxetine Treatment Type Journal Article
Year 2006 Publication Abbreviated Journal Neuropsychopharmacology
Volume 32 Issue 7 Pages 1490-1503
Keywords neurogenesis, stereology, cell number, glia, NG2, hippocampus
Abstract Profound neuroplastic changes have been demonstrated in various limbic structures after chronic stress exposure and antidepressant treatment in animal models of mood disorders. Here, we examined in rats the effect of chronic social stress and concomitant antidepressant treatment on cell proliferation in the medial prefrontal cortex (mPFC). We also examined possible hemispheric differences. Animals were subjected to 5 weeks of daily social defeat by an aggressive conspecific and received concomitant, daily, oral fluoxetine (10 mg/kg) during the last 4 weeks. Bromodeoxyuridine (BrdU) labeling and quantitative stereological techniques were used to evaluate the treatment effects on proliferation and survival of newborn cells in limbic structures such as the mPFC and the hippocampal dentate gyrus, in comparison with nonlimbic structures such as the primary motor cortex and the subventricular zone. Phenotypic analysis showed that neurogenesis dominated the dentate gyrus, whereas in the mPFC most newborn cells were glia, with smaller numbers of endothelial cells. Chronic stress significantly suppressed cytogenesis in the mPFC and neurogenesis in the dentate gyrus, but had minor effect in nonlimbic structures. Fluoxetine treatment counteracted the inhibitory effect of stress. Hemispheric comparison revealed that the rate of cytogenesis was significantly higher in the left mPFC of control animals, whereas stress inverted this asymmetry, yielding a significantly higher incidence of newborn cells in the right mPFC. Fluoxetine treatment abolished hemispheric asymmetry in both control and stressed animals. These pronounced changes in gliogenesis after chronic stress exposure may relate to the abnormalities of glial cell numbers reported in the frontolimbic areas of depressed patients.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0893-133x ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5785
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Author Carmalt, J.L.; Carmalt, K.P.; Barber, S.M.
Title The effect of occlusal equilibration on sport horse performance Type Journal Article
Year 2006 Publication Journal of Veterinary Dentistry Abbreviated Journal J Vet Dent
Volume 23 Issue 4 Pages 226-230
Keywords Analysis of Variance; Animals; Cross-Over Studies; *Dental Occlusion, Balanced; Horse Diseases/*therapy; Horses; Malocclusion/therapy/*veterinary; Occlusal Adjustment/methods/*veterinary; Prospective Studies; Treatment Outcome
Abstract The objective of this study was to investigate the effect of routine dental occlusal equilibration treatment on dressage horse performance. Sixteen horses (11 treated; 5 untreated) ridden by a single rider performed a standardized dressage test twice and were scored by two experienced dressage judges according to recognized movements and rider cues. All horses were sedated and a full-mouth speculum was used to facilitate a complete oral examination. Treated horses had dental equilibration performed using a motorized dental instrument. The horses performed a second test 48-hours after dental equilibration, exactly as the baseline test, with the judges and rider blinded as to treatment group. The total test score as well as the individual movement scores were evaluated for equality of variance and statistical tests were applied to determine the influence of treatment. There was no significant improvement in the test score of horses that had received occlusal equilibration.
Address Scone Veterinary Hospital, NSW, Australia. carmalt_vet@hotmail.com
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0898-7564 ISBN Medium
Area Expedition Conference
Notes PMID:17286128 Approved no
Call Number Equine Behaviour @ team @ Serial 3708
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Author Turner, K.K.; Nielsen, B.D.; O'Connor, C.I.; Burton, J.L.
Title Bee pollen product supplementation to horses in training seems to improve feed intake: A pilot study Type Journal Article
Year 2006 Publication Journal of Animal Physiology and Animal Nutrition Abbreviated Journal J Anim Physiol Anim Nutr (Berl)
Volume 90 Issue 9-10 Pages 414-420
Keywords *Animal Nutrition Physiology; Animals; Antibody Formation; Bees; Detergents; Dietary Fiber/metabolism; Dietary Supplements; *Digestion; Eating/*drug effects; Exercise Test/veterinary; Female; Heart Rate/drug effects/physiology; Horses/blood/immunology/*physiology; Leukocyte Count/*veterinary; Male; Oxygen Consumption/drug effects/physiology; Physical Conditioning, Animal/*physiology; Pilot Projects; *Pollen; Random Allocation
Abstract The objective of this study was to determine the efficacy of supplementation of Dynamic Trio 50/50, a bee pollen-based product, to improve physical fitness, blood leukocyte profiles, and nutritional variables in exercised horses. Ten Arabian horses underwent a standardised exercise test (SET), then were pair-matched by sex and fitness and randomly assigned to BP (receiving 118 g of Dynamic Trio 50/50 daily) or CO (receiving 73 g of a placebo) for a period of 42 days. A total collection was conducted from days 18 to 21 on six geldings to determine nutrient retention and neutral detergent fibre (NDF) and acid detergent fibre (ADF) digestibility. Horses were exercise conditioned and completed another SET on day 42. V160 and V200 were calculated from SET heart rates (HR). Lactate, glucose, haematocrit (HT) and haemoglobin (HB) concentrations were determined from SET blood samples. Total leukocyte count, and circulating numbers of various leukocytes and IgG, IgM and IgA concentrations were determined in rest and recovery blood samples from both SETs. Geldings on BP (n = 3) ate more feed than CO. BP had less phosphorus excretion, and tended to retain more nitrogen. BP tended to digest more NDF and ADF while having lower NDF digestibility and tending to have lower ADF digestibility. No treatment differences existed for V160 and V200, HR, lactate, HT and HB. There was a trend for lymphocyte counts to be lower in BP than CO on day 42. Dynamic Trio 50/50 supplementation may have a positive effect on performance by helping horses in training meet their potentially increased nutrient demands by increasing feed intake and thus nutrient retention.
Address Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA. kturner@uga.edu
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN (up) 0931-2439 ISBN Medium
Area Expedition Conference
Notes PMID:16958799 Approved no
Call Number Equine Behaviour @ team @ Serial 4237
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