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Author |
Ryan, C.T.; Schaer, B.L.D.; Nunamaker, D.M. |
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Title  |
A novel wireless data acquisition system for the measurement of hoof accelerations in the exercising horse |
Type |
Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
38 |
Issue |
7 |
Pages |
671-674 |
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Keywords |
*Acceleration; Animals; Biomechanics; Equipment and Supplies/*veterinary; Hoof and Claw/*physiology; Horses/*physiology; Kinetics; Musculoskeletal Physiology; Physical Conditioning, Animal/*physiology; Running/physiology |
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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. |
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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 |
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0425-1644 |
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PMID:17228584 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4023 |
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Author |
Tavernor, W.D.; Lees, P. |
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Title |
A pharmacological investigation of the influence of suxamethonium on cardiac function in the horse |
Type |
Journal Article |
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Year |
1968 |
Publication |
Experientia |
Abbreviated Journal |
Experientia |
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Volume |
24 |
Issue |
6 |
Pages |
582-583 |
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Keywords |
Animals; Arrhythmia/chemically induced; Consciousness; Halothane; Heart/innervation; Heart Rate/*drug effects; Horses/*physiology; Oxygen; Propranolol/pharmacology; Receptors, Sensory/drug effects; Stimulation, Chemical; Succinylcholine/antagonists & inhibitors/*pharmacology; Sympathetic Nervous System/physiology; Tachycardia/chemically induced; Thiopental |
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0014-4754 |
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PMID:5697737 |
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no |
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Call Number |
refbase @ user @ |
Serial |
104 |
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Author |
Argue, C.K.; Clayton, H.M. |
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Title |
A preliminary study of transitions between the walk and trot in dressage horses |
Type |
Journal Article |
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Year |
1993 |
Publication |
Acta Anatomica |
Abbreviated Journal |
Acta Anat (Basel) |
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Volume |
146 |
Issue |
2-3 |
Pages |
179-182 |
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Keywords |
Animals; Forelimb/physiology; Gait/*physiology; Hindlimb/physiology; Horses/*physiology; Locomotion/physiology; *Physical Conditioning, Animal |
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Abstract |
The object of this study was to determine the limb support sequence during the transitions from walk to trot and from trot to walk in dressage horses under saddle and to test the null hypothesis that the limb support sequence during the transitions is not related to the level of training. Sixteen dressage horses training at novice to FEI Grand Prix level were videotaped performing an average of 9 transitions each from walk to trot and from trot to walk. The 30-Hz videotapes were viewed in slow motion, and based on the limb support sequence the transitions were categorized into two types. In type 1 transitions there were no intermediate steps between the walk and trot sequences. Type 2 transitions were characterized by intermediate steps, including a single support phase. The Kendall rank-order correlation coefficient showed that a higher level of training was positively associated with an increased percentage of type 1 transitions for both walk-to-trot transitions (p < or = 0.05) and trot-to-walk transitions (p < or = 0.01). No significant preference for initiating or completing the trot on the left or right diagonal was found using the binomial test for individual horses and the Wilcoxon signed-ranks test for the group. |
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Address |
Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada |
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English |
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ISSN |
0001-5180 |
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Notes |
PMID:8470463 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3752 |
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Author |
Pinchbeck, G.L.; Clegg, P.D.; Proudman, C.J.; Morgan, K.L.; French, N.P. |
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Title |
A prospective cohort study to investigate risk factors for horse falls in UK hurdle and steeplechase racing |
Type |
Journal Article |
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Year |
2004 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
36 |
Issue |
7 |
Pages |
595-601 |
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Keywords |
*Accidental Falls/mortality/statistics & numerical data; Age Factors; Animal Welfare; Animals; Athletic Injuries/epidemiology/etiology/mortality/*veterinary; Cohort Studies; Great Britain; Horses/*injuries; Logistic Models; Odds Ratio; Prospective Studies; Questionnaires; Rain; Risk Factors; Safety; Sports |
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Abstract |
REASONS FOR PERFORMING STUDY: Equine fatalities during racing continue to be a major welfare concern and falls at fences are responsible for a proportion of all equine fatalities recorded on racecourses. OBJECTIVES: To identify and quantify risk factors for horse falls in National Hunt (NH) racing and to report the frequency of falling and falling-associated fatalities. METHODS: A prospective cohort study was conducted on 2879 horse starts in hurdle and steeplechase races on 6 UK racecourses. Any horse that suffered a fall at a steeplechase or hurdle fence during the race was defined as a case. Data were obtained by interview and observations in the parade ring and from commercial databases. Multivariable logistic regression models, allowing for clustering at the level of the track, were used to identify the relationship between variables and the risk of falling. RESULTS: There were 124 falling cases (32 in hurdling and 92 in steeplechasing) identified. The injury risk of fallers was 8.9% and fatality risk 6.5%. Duration of journey to the racecourse, behaviour in the parade ring and weather at the time of the race were associated with falling in both hurdle and steeplechase racing. Age, amount of rainfall and going were also associated with falling in steeplechase racing. CONCLUSIONS: Falls at fences are significant contributors to equine fatalities during NH racing. Potentially modifiable risk factors identified were the condition of track surfaces and journey time to the racecourse. POTENTIAL RELEVANCE: It is hoped that information from this study may be used in future interventions to improve horse and jockey safety in racing. The study has also identified areas requiring further research, such as equine behaviour and its effect on racing performance, and the effect of light conditions on jumping ability. |
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Address |
Department of Veterinary Clinical Science, University of Liverpool, Leahurst, Neston, Wirral CH64 7TE, UK |
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English |
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Abbreviated Series Title |
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Series Volume |
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ISSN |
0425-1644 |
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Notes |
PMID:15581324 |
Approved |
no |
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Call Number |
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Serial |
1898 |
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Author |
Alexander, F.; Benzie, D. |
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Title |
A radiological study of the digestive tract of the foal |
Type |
Journal Article |
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Year |
1951 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
36 |
Issue |
4 |
Pages |
213-217 |
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Keywords |
Gastrointestinal Tract/*radiography; *Horses; *GASTROINTESTINAL SYSTEM/radiography; *Horses; *MYOCARDITIS/etiology and pathogenesis |
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English |
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Abbreviated Series Title |
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ISSN |
0033-5541 |
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Notes |
PMID:14892238 |
Approved |
no |
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Call Number |
refbase @ user @ |
Serial |
129 |
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Author |
Singer, E.R.; Saxby, F.; French, N.P. |
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Title |
A retrospective case-control study of horse falls in the sport of horse trials and three-day eventing |
Type |
Journal Article |
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Year |
2003 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
35 |
Issue |
2 |
Pages |
139-145 |
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Keywords |
Accidental Falls/prevention & control/*statistics & numerical data; Adolescent; Adult; Animals; Athletic Injuries/epidemiology/etiology/prevention & control/*veterinary; Case-Control Studies; Child; Confidence Intervals; Female; Horses/*injuries; Humans; Logistic Models; Male; Odds Ratio; Retrospective Studies; Risk Factors; Safety; *Sports/standards |
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Abstract |
REASONS FOR PERFORMING STUDY: Serious injuries to horses and riders in horse trials (HT) and three-day events (3DE) are usually associated with falls of horses, which invariably involve falls of the riders. Many potential causes for these falls have been discussed. OBJECTIVES: The aim of this case-control study was to investigate the risk factors for horse falls on the cross-country phase of horse trials and three-day events. METHODS: Using retrospective data, significant risk factors identified with unvariable analysis (P value <0.2) were entered into a multivariable logistic regression model. Significant risk factors (P value <0.05) were included in the final model. RESULTS: It was revealed that a number of course, obstacle and rider variables were significantly and independently associated with the risk of falling. Falling was associated with obstacles sited downhill (Odds ratio [OR] 8.41) and with obstacles with ditches in front (OR = 5.77). CONCLUSIONS: The relationship between course variables and the risk of falling was characterised and showed a significantly increased risk with increasing numbers of jumps on the course and for jumping efforts later in the course. In contrast, after allowing for the total number of obstacles on the course, an increase in the total number of jumping efforts appeared to have a protective effect. A later cross-country start time was associated with a decreased risk of a horse fall. Amateur event riders were approximately 20 times more likely to fall than professional riders. POTENTIAL CLINICAL RELEVANCE: This study has identified a number of risk factors associated with horse falls and highlights areas that can be altered to improve safety in cross-country competitions. |
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Address |
Division of Equine Studies, University of Liverpool, Leahurst, Chester High Road, Neston, South Wirral CH64 7TE, UK |
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English |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0425-1644 |
ISBN |
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Expedition |
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Notes |
PMID:12638789 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3661 |
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| Permanent link to this record |
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Author |
Forbes, A.B. |
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Title |
A review of regional and temporal use of avermectins in cattle and horses worldwide |
Type |
Journal Article |
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Year |
1993 |
Publication |
Veterinary Parasitology |
Abbreviated Journal |
Vet Parasitol |
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Volume |
48 |
Issue |
1-4 |
Pages |
19-28 |
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Keywords |
Animals; Anthelmintics/therapeutic use; Arthropods; Cattle; Cattle Diseases/drug therapy/*prevention & control; Ectoparasitic Infestations/drug therapy/prevention & control/veterinary; Horse Diseases/drug therapy/*prevention & control; Horses; Insecticides; Ivermectin/*analogs & derivatives/*therapeutic use; Nematode Infections/drug therapy/prevention & control/veterinary; Parasitic Diseases/drug therapy/prevention & control; *Parasitic Diseases, Animal |
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Abstract |
Ivermectin and abamectin are two members of the group of parasiticides known as the avermectins; ivermectin was first registered as an injectable treatment for cattle in 1981. Since then, abamectin has been registered for cattle and ivermectin for horses. The relative popularity of the avermectins amongst farmers and veterinarians can be attributed to their spectrum of activity, convenience, wide margin of safety and the improved health and performance of stock following their use. Patterns of use in grazing animals apply equally to the avermectins as to other antiparasitics, particularly anthelmintics; these are based on a knowledge of epidemiology integrated with practical management considerations. For cattle, programs are commonly aimed at control of abomasal nematodes of the genera Ostertagia and Haemonchus. Use of avermectins is largely strategic in cattle, treatments being favored at the end of the period of transmission of these parasites; this frequently coincides with housing, entry into a feedlot or movement to another pasture. Simultaneous control of important ectoparasites at this time is an added benefit. Prophylactic use of avermectins at pasture is primarily targeted at the young first season grazing animal. In horses, a bimonthly treatment schedule during the period of risk has proved effective in helping prevent adverse effects of the main target parasites, including large and small strongyles and stomach bots. These patterns of use can be applied to the evaluation of the potential for avermectin residues in feces to have impact on pasture ecology. The evidence presented suggests that any effects are temporally and spatially limited. After more than a decade of practical use, there is no indication that avermectins have had a significant impact on pasture ecology and the environment. |
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Address |
MERCK AgVet, Rahway, NJ 07065-0912 |
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English |
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Abbreviated Series Title |
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ISSN |
0304-4017 |
ISBN |
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Notes |
PMID:8346632 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2665 |
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Author |
Belonje, P.C.; van Niekerk, C.H. |
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Title |
A review of the influence of nutrition upon the oestrous cycle and early pregnancy in the mare |
Type |
Journal Article |
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Year |
1975 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
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Volume |
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Issue |
23 |
Pages |
167-169 |
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Keywords |
Animals; Body Weight; *Diet; *Estrus; Female; Fertility; Fetal Resorption/prevention & control; Horses/*physiology; Pregnancy |
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Abstract |
Attention is drawn to the beneficial effect of improved nutrition during winter and early spring on the ovarian activity of mares. Furthermore, the necessity of an adequate plane of nutrition during early pregnancy to prevent embryonic resorption is stressed. |
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English |
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Abbreviated Series Title |
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ISSN |
0449-3087 |
ISBN |
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Notes |
PMID:1060772 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2225 |
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Author |
Alexander, F. |
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Title |
A study of parotid salivation in the horse |
Type |
Journal Article |
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Year |
1966 |
Publication |
The Journal of physiology |
Abbreviated Journal |
J Physiol |
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Volume |
184 |
Issue |
3 |
Pages |
646-656 |
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Keywords |
Animals; Atropine/*pharmacology; Bicarbonates/metabolism; Calcium/metabolism; Chlorides/metabolism; Horses; Mastication/*physiology; Parotid Gland/*physiology; Pilocarpine/*pharmacology; Potassium/metabolism; Salivation/*drug effects; Sodium/metabolism; Tetracaine/*pharmacology |
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English |
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Abbreviated Series Title |
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0022-3751 |
ISBN |
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Notes |
PMID:5963737 |
Approved |
no |
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Call Number |
refbase @ user @ |
Serial |
119 |
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Author |
Saigo, S. |
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Title |
A transient spin-state change during alkaline isomerization of ferricytochrome c |
Type |
Journal Article |
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Year |
1981 |
Publication |
Journal of Biochemistry |
Abbreviated Journal |
J Biochem (Tokyo) |
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Volume |
89 |
Issue |
6 |
Pages |
1977-1980 |
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Keywords |
Animals; *Cytochrome c Group; Horses; Hydrogen-Ion Concentration; Isomerism; Kinetics; Myocardium/enzymology; Oxidation-Reduction; Spectrophotometry |
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Abstract |
Kinetic difference spectra during the alkaline isomerization of ferricytochrome c were obtained by the pH-jump method in the range of 540 to 655 nm. The spectrum of the transient intermediate, which appears during the course of the isomerization, was reproduced from the spectra. The intermediate showed an intense absorption band at 600 nm, indicating that it is a high spin or mixed spin species. This is in contrast to the stable neutral and alkaline forms which are low spin species. The transient spin-state change during the isomerization was also observed upon rapid oxidation of ferrocytochrome c at alkaline pH. |
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English |
Summary Language |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0021-924X |
ISBN |
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Notes |
PMID:6270075 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3808 |
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