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Author Villani, M.; Cairoli, F.; Kindahl, H.; Galeati, G.; Faustini, M.; Carluccio, A.; Veronesi, M.C. doi  openurl
  Title (up) Effects of mating on plasma concentrations of testosterone, cortisol, oestrone sulphate and 15-ketodihydro-PGF2alpha in stallions Type Journal Article
  Year 2006 Publication Reproduction in Domestic Animals = Zuchthygiene Abbreviated Journal Reprod Domest Anim  
  Volume 41 Issue 6 Pages 544-548  
  Keywords Animals; Dinoprost/*analogs & derivatives/blood; Ejaculation/physiology; Estrone/*analogs & derivatives/blood; Horses/*blood/physiology; Hydrocortisone/*blood; Male; Sexual Behavior, Animal/*physiology; Testosterone/*blood  
  Abstract Very little information is available regarding the physiological mechanisms involved in the normal sexual activity in the stallion and, in particular, the endocrine control of reproduction is still not clearly understood. This experiment was designed to determine the short-term effect of sexual stimulation on plasma concentrations of testosterone, cortisol, oestrone sulphate and 15-ketodihydro-PGF(2alpha) in stallions. Semen samples were collected from 10 lighthorse stallions of proven fertility using a Missouri model artificial vagina. At the same time, blood samples were collected from the jugular vein with heparinized tubes, 20 and 10 min before oestrous mare exposure, at exposure and 10, 20, 30 min after dismounting. Testosterone concentrations showed a sharp rise 10 min after mating (p < 0.001), reached a plateau, and then showed a further increase 30 min after mating (p < 0.001). Cortisol concentrations increased 10 min after mating (p < 0.001) and remained at high levels in the subsequent samples taken. A peak of oestrone sulphate was observed 10 min after mating (p < 0.001). 15-Ketodihydro-PGF(2alpha) concentrations decreased rapidly at the moment of the exposure of the stallions to an oestrous mare (p < 0.05), returned to pre-mating concentrations and then decreased again 30 min after mating (p < 0.05).  
  Address Dipartimento di Scienze Cliniche Veterinarie, Sez. Clinica Ostetrica e Ginecologica Veterinaria, Milan, Italy  
  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 0936-6768 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:17107515 Approved no  
  Call Number Serial 1855  
Permanent link to this record
 

 
Author Powers, P.; Harrison, A. openurl 
  Title (up) Effects of the rider on the linear kinematics of jumping horses Type Journal Article
  Year 2002 Publication Sports Biomechanics / International Society of Biomechanics in Sports Abbreviated Journal Sports Biomech  
  Volume 1 Issue 2 Pages 135-146  
  Keywords Animals; Behavior, Animal/*physiology; Biomechanics; Communication; Exertion/*physiology; Gait/*physiology; Horses/*physiology; Humans; Locomotion/*physiology; Posture/*physiology; Task Performance and Analysis; Video Recording; Weight-Bearing/*physiology  
  Abstract This study examined the effects of the rider on the linear projectile kinematics of show-jumping horses. SVHS video recordings (50 Hz) of eight horses jumping a vertical fence 1 m high were used for the study. Horses jumped the fence under two conditions: loose (no rider or tack) and ridden. Recordings were digitised using Peak Motus. After digitising the sequences, each rider's digitised data were removed from the ridden horse data so that three conditions were examined: loose, ridden (including the rider's data) and riderless (rider's data removed). Repeated measures ANOVA revealed significant differences between ridden and loose conditions for CG height at take-off (p < 0.001), CG distance to the fence at take-off (p = 0.001), maximum CG during the suspension phase (p < 0.001), CG position over the centre of the fence (p < 0.001), CG height at landing (p < 0.001), and vertical velocity at take-off (p < 0.001). The results indicated that the rider's effect on jumping horses was primarily due to behavioural changes in the horses motion (resulting from the rider's instruction), rather than inertial effects (due to the positioning of the rider on the horse). These findings have implications for the coaching of riders and horses.  
  Address Department of PE and Sports Sciences, University of Limerick, Limerick, Ireland  
  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 1476-3141 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:14658371 Approved no  
  Call Number Serial 1904  
Permanent link to this record
 

 
Author Waran, N.K.; Robertson, V.; Cuddeford, D.; Kokoszko, A.; Marlin, D.J. openurl 
  Title (up) Effects of transporting horses facing either forwards or backwards on their behaviour and heart rate Type Journal Article
  Year 1996 Publication The Veterinary Record Abbreviated Journal Vet. Rec.  
  Volume 139 Issue 1 Pages 7-11  
  Keywords Animals; *Behavior, Animal; Female; *Heart Rate; *Horses; Male; Posture/*physiology; *Transportation  
  Abstract The effects of transporting horses facing either forwards or backwards were compared by transporting six thoroughbred horses in pairs in a lorry on one journey facing in the direction of travel, and on another journey facing away from the direction of travel, over a standard one-hour route. Heart rate monitors were used to record their heart rate before, during and after the journey and the horses' behaviour was recorded by scan sampling each horse every other minute. The average heart rate was significantly lower (P < 0.05) when the horses were transported facing backwards, and they also tended to rest on their rumps more (P = 0.059). In the forward-facing position, the horses moved more frequently (P < 0.05) and tended to hold their necks in a higher than normal position and to vocalise more frequently (P = 0.059). During loading the average peak heart rate was 38 bpm lower (P < 0.05) when the horses were backed into the horse box for rear-facing transport than when they were loaded facing forwards. However, there was no difference between transport facing forwards or backwards in terms of the peak unloading heart rate, or the average heart rate during loading or unloading. The horses seemed to find being transported less physically stressful when they were facing backwards than when they were facing forwards.  
  Address Institute of Ecology and Resource Management, University of Edinburgh, School of Agriculture  
  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 0042-4900 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:8966985 Approved no  
  Call Number refbase @ user @ Serial 1938  
Permanent link to this record
 

 
Author Robert, C.; Audigie, F.; Valette, J.P.; Pourcelot, P.; Denoix, J.M. openurl 
  Title (up) Effects of treadmill speed on the mechanics of the back in the trotting saddlehorse Type Journal Article
  Year 2001 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume Issue 33 Pages 154-159  
  Keywords Animals; Biomechanics; Electromyography/veterinary; Exercise Test/veterinary; Horses/*physiology; Locomotion/*physiology; Muscle, Skeletal/*physiology; Range of Motion, Articular/*physiology; Spine/*physiology; Video Recording  
  Abstract Speed related changes in trunk mechanics have not yet been investigated, although high-speed training is currently used in the horse. To evaluate the effects of speed on back kinematics and trunk muscles activity, 4 saddle horses were recorded while trotting on a horizontal treadmill at speeds ranging from 3.5 to 6 m/s. The 3-dimensional (3-D) trajectories of skin markers on the left side of the horse and the dorsal midline of the trunk were established. Electrical activity was simultaneously obtained from the longissimus dorsi (LD) and rectus abdominis (RA) muscles using surface electrodes. Ten consecutive strides were analysed for each horse at each of the 5 velocity steps. Electromyographic and kinematic data were time-standardised to the duration of the stride cycle and compared using an analysis of variance. The back extended during the first part of each diagonal stance phase when the RA was active and the back flexed during the second part of each diagonal stance phase when the LD was active. The onset and end of muscle activity came earlier in the stride cycle and muscle activity intensity increased when speed increased. The amplitude of vertical movement of the trunk and the maximal angles of flexion decreased with increasing speed, whereas the extension angles remained unchanged. This resulted in a decreased range of back flexion-extension. This study confirms that the primary role of trunk muscles is to control the stiffness of the back rather than to induce movements. Understanding the effects of speed on the back of healthy horses is a prerequisite for the prevention and treatment of back pathology.  
  Address UMR INRA, Biomecanique et Pathologie Locomotrice du Cheval, UP d'Anatomie, Ecole Nationale Veterinaire d'Alfort, 7 Avenue du General de Gaulle, F-94704 Maisons-Alfort, France  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:11721558 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4050  
Permanent link to this record
 

 
Author Holmstrom, M.; Drevemo, S. openurl 
  Title (up) Effects of trot quality and collection on the angular velocity in the hindlimbs of riding horses Type Journal Article
  Year 1997 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume Issue 23 Pages 62-65  
  Keywords Animals; Femur/physiology; Gait/*physiology; Hindlimb/*physiology; Horses/*physiology; Locomotion/*physiology; Male; Movement/physiology; Statistics; Time Factors  
  Abstract The angular velocities of the hindlimb angles of 14 horses, including 6 Grand Prix dressage horses, 4 horses judged as good at the trot and 4 horses judged as poor, were analysed. The horse material was the same as previously used by Holmstrom (1994) in studies on conformation and trotting gaits in the Swedish Warmblood riding horse. Four consecutive strides of each horse and the corresponding pace were analysed and mean velocity curves (Xh) for each angle were calculated. Before calculation the data were filtered forwards and backwards with a Butterworth third order filter with a cut off frequency of 60 Hz. During the last 60% of the stance phase there were differences between the horses judged as good and poor at the trot in all the analysed hindlimb angles except the femur inclination. The angular velocity in the hock joint, pelvis inclination and hindlimb pendulation was larger in the good horses. The angular velocity of the hindlimb pendulation decreased with collection in the Grand Prix horses. During parts of the stance phase, there was also a gradual decrease in the femur angular velocity from trot at hand to piaffe. In the hock joint, there was no difference in angular velocity between trot at hand and passage during the last 30%. The higher compression of the hock angle and pelvic angle to the horizontal plane probably reflects a higher compression of the whole hindlimb. It probably contributes to the greater springiness in the movements of good young horses and Grand Prix dressage horses. The results from the present study confirmed the importance of storing elastic strain energy for the quality of the dressage horse gaits.  
  Address Dept. of Anatomy and Histology, Swedish University of Agricultural Science, Uppsala  
  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 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:9354292 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3736  
Permanent link to this record
 

 
Author Obergfell, J. openurl 
  Title (up) Einf lus s v on St ruktur e l ement en auf da s Li eg ev e rha l t en v on Pf e rden in Gruppenha l tung unt e r Be rücks i cht igung de s Ag g r e s s i ons v e rha l t ens Type Manuscript
  Year 2012 Publication Abbreviated Journal  
  Volume Issue Pages  
  Keywords Pferde, Ruheverhalten, Liegeverhalten, Aggressionsverhalten, Strukturelemente, Rangordnung [horses, rest behavior, lying behavior, aggression behavior, structural elements, rank order]  
  Abstract Durch die vorliegende Studie wurde der Einfluss von Strukturelementen auf das Liege- und Aggressionsverhalten von Pferden in Gruppenhaltung untersucht. Die Strukturelemente sollten Rückzugsmöglichkeiten bieten, sowie in ihrem Bereich zur Aufhebung der Individualdistanz führen und dadurch die Fläche relativ vergrößern. Für die Versuche stellte das Haupt- und Landesgestüt Marbach drei unabhängige Pferdegruppen mit verschiedener Herdengröße zur Verfügung, die jeweils in Einraum- Innenlaufställen gehalten wurden. Die Datenerfassung fand zwischen 23 und sieben Uhr statt. Insgesamt wurden 366 Stunden Videomaterial ausgewertet. Beim Ruheverhalten wurden mit Hilfe des event-sampling- Verfahrens die Parameter Gesamtliegedauer, Dauer in Seitenlage, Dauer der Einzelphasen in

Seitenlage und Abliegehäufigkeit pro Nacht erfasst. Es wurden Versuchsphasen ohne

Strukturelemente und mit hängenden Planen als Strukturierung durchgeführt. Im ersten Stall

kamen außerdem über einander gestapelte Strohballen zum Einsatz. Diese Art der

Strukturierung stellte sich jedoch als nicht praktikabel heraus und führte im Vergleich zu den Planen zu einer signifikanten Verschlechterung der Gesamtliegedauer. In Stall 1 konnte man eine tendenzielle Verbesserung der Parameter Gesamtliegedauer und Gesamtdauer in Seitenlage durch das Anbringen von Planen sehen. In Stall 3 dagegen verschlechterte sich das Ruheverhalten in den Versuchsphasen mit Planen gegenüber den Versuchsphasen ohne Struktur. Die Werte der Gesamtdauer in Seitenlage nahmen signifikant ab. In Stall 2 zeigten sich keine Unterschiede in den verschiedenen Versuchsphasen. Möglicherweise ist die Wirkung der Strukturelemente auf das Liegeverhalten abhängig von der Flächengröße. Stall 1 hatte bezogen auf die Leitlinien des BMELV die größte und Stall 3 die kleinste Fläche. Bei den anderen Parametern des Liegeverhaltens gab es keine signifikanten Unterschiede in den verschiedenen Versuchsphasen. Mit Hilfe des time-sampling-Verfahrens wurde die Anzahl gleichzeitig liegender Pferde und gleichzeitig liegender Pferde in Seitenlage bestimmt. Auch hier zeigten sich keine Unterschiede in den verschiedenen Versuchsphasen. Bei der Gegenüberstellung der Werte der Gesamtliegedauer und der Gesamtdauer in Seitenlage mit dem Alter der Pferde (Stall 1 und Stall 3) und mit dem Integrationszeitpunkt (Stall 1) konnte kein Zusammenhang festgestellt werden. Beim Aggressionsverhalten wurden mit Hilfe des

event-sampling-Verfahrens in den Ställen 2 und 3 verschiedene Arten von Aggressionen

erfasst, die dann in die drei Intensitätsgrade Low-Level-, Mid-Level- und High-Level-

Aggressionen unterteilt wurden. Neben der Anzahl wurde die Dauer der verschiedenen

Aggressionen bewertet. Insgesamt konnte eine positive Wirkung der Planen auf das

Aggressionsverhalten beobachtet werden. Die Gesamtanzahl an Aggressionen nahm in beiden

Ställen tendenziell in den Versuchsphasen mit Planen ab. In Stall 3 konnte, wenn man die

Aggressionen stundenweise betrachtet, ein signifikanter Unterschied festgestellt werden.

Auch der Hinterhandschlag und die Aggressionen, welche das Ruheverhalten stören,

verringerten sich tendenziell nach dem Anbringen von Strukturelementen. In beiden Ställen

nahm die relative Häufigkeit von Mid-Level-Aggressionen nach dem Anbringen von Planen

zu. Dagegen konnte bei den High-Level-Aggressionen und in Stall 3 bei den Low-Level-

Aggressionen eine relative Abnahme beobachtet werden. Sowohl die Anzahl als auch die

Dauer der Mid-Level-Aggressionen verringerten sich in Stall 3 stundenweise betrachtet

signifikant in den Versuchsphasen mit Planen. In Stall 2 war bei den High-Level-

Aggressionen sowohl bei der Dauer als auch bei der Anzahl eine signifikante Abnahme zu

sehen. Wenn man das Aggressionsverhalten in Bezug zu der Fläche in den zwei Ställen

betrachtet, schien diese vor allem einen Einfluss auf die High-Level-Aggressionen zu

nehmen. Mit Hilfe des Rangindex der Pferde im Stall 3 wurde eine Rangordnung aufgestellt.

Zwischen dem Platz der Pferde in der Rangordnung und den Parametern des Ruheverhaltens

(Gesamtliegedauer, Gesamtdauer in Seitenlage) sowie dem Alter der Pferde konnte kein

Zusammenhang festgestellt werden. Zwischen dem Rangindex und der Gesamtanzahl an

Aggressionen bestand dagegen ein hoch signifikanter Zusammenhang. Im Rahmen dieser

Studie ist das Anbringen von Strukturelementen in Bezug auf das Aggressionsverhalten in

Einraum-Innenlaufställen von Pferden zu empfehlen. Die Wirkung auf das Liegeverhalten der

Pferde sollte in weiteren Studien untersucht werden.

[In this study the influence of structural elements on lying and aggression behavior in horses

kept in groups was exanimated. Structural elements should offer the possibility of retreat.

Furthermore, within the respective area, the individual distance should be limited, thus

increasing the overall space relatively. For the studies the “Haupt- und Landesgestüt

Marbach” provided three non-related groups of different sized horses, each kept in separate

“Einraum-Innenlaufställen”. Data collection took place between 11 pm and 7 am. Altogether,

366 hours of video material were analyzed. Using the event-sampling-method, the following

parameters within the horses´ resting behavior were determined: The total lying period, the

total lying period in lateral position, the periods of the single lying in lateral position and the

frequency of lying down. Test phases were carried out without structural elements and with

hanging canvases as structural elements. In the first stable there were also three bales of straw

piled up on top of each other. This kind of structuring emerged as impractical and in

comparison to the canvas, led to a significant deterioration to the total period of lying. After

the canvases were fixed in the first stable, a slight improvement with the parameters of total

lying period and total lying period in the lateral position could be seen. In contrast, the resting

behavior in stable 3 worsened in the test phases with the canvases in comparison to the test phases without structural elements. The values for the total lying period in the lateral position

decreased significantly. In stable 2, there were no differences in the different test phases.

Possibly the effect of the structural elements is dependent of the space. Stable 1 had the

largest space and stable 3 the least space referred to the guideline of the BMELV. The other

parameters of the lying behavior showed no significant differences in the different test phases.

The number of horses lying at the same time, and the number of horses lying at the same time

in the lateral position were detected with the aid of the time-sampling-method. There were

also no differences between the different test phases. If the values of the total lying period and

the total lying period in lateral position were compared to the age of the horses (stable 1 and

stable 3) and to the point of integration (stable 1), there was no correlation.

Different kinds of aggression were detected by the means of the event-sampling-method in

stable 2 and 3 and were subdivided into the three levels of intensity: Low-level-, mid-level

and high-level-aggressions. Both the number and the duration of the different aggressions

were evaluated. All in all a positive influence of the canvas on the aggression behavior could

be observed. In both stables, the total number of aggressions decreased in the test phases with

canvases. In stable 3 a significant difference could be detected, if the aggressions were

observed per hour. Also hind limb kicks and aggressions disturbing the resting behavior,

decreased by trend, after fixing the canvases in the stable. In both stables the relative

frequency of mid-level-aggressions increased after the canvases were mounted. In contrast

there was a relative decrease at the high-level-aggressions and in stable 3 at the low-levelaggressions.

The number and the duration of the mid-level-aggressions in stable 3 decreased,

when considered by the hour in the test phases with canvases. In stable 2 a significant

decrease in duration and number of high-level-aggressions was observed. When examining

aggression behavior in reference to space in the two stables, high-level-aggressions seemed to

be mostly influenced. In stable 3 a rank order was established with the aid of the rank index of

the horses. There was no correlation between the horses´ rank and the parameters of the

resting behavior (the total lying period, the total lying period in lateral position) and between

horses´ rank and age. In contrast, there was a high significant correlation between the rank

index and the total number of aggressions. In context to this study, structural elements in

“Einraum-Innenlaufställen” (BMELV 2009) seem to have a positive influence on the

aggression behavior and thus seem to be recommendable. The influence on the lying behavior

should be investigated in further studies.]
 
  Address  
  Corporate Author Thesis Ph.D. thesis  
  Publisher Place of Publication Karlsruhe Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5772  
Permanent link to this record
 

 
Author Devienne, M.F.; Guezennec, C.Y. openurl 
  Title (up) Energy expenditure of horse riding Type Journal Article
  Year 2000 Publication European Journal of Applied Physiology Abbreviated Journal Eur J Appl Physiol  
  Volume 82 Issue 5-6 Pages 499-503  
  Keywords Adult; Animals; Energy Metabolism/*physiology; Exercise/*physiology; Exercise Test; Female; Hemodynamic Processes/physiology; Horses; Humans; Male; Oxygen Consumption/physiology; Respiratory Mechanics/physiology  
  Abstract Oxygen consumption (VO2), ventilation (VE) and heart rate (HR) were studied in five recreational riders with a portable oxygen analyser (K2 Cosmed, Rome) telemetric system, during two different experimental riding sessions. The first one was a dressage session in which the rider successively rode four different horses at a walk, trot and canter. The second one was a jumping training session. Each rider rode two horses, one known and one unknown. The physiological parameters were measured during warm up at a canter in suspension and when jumping an isolated obstacle at a trot and canter. This session was concluded by a jumping course with 12 obstacles. The data show a progressive increase in VO2 during the dressage session from a mean value of 0.70 (0.18) l x min(-1) [mean (SD)] at a walk, to 1.47 (0.28) l x min(-1) at a trot, and 1.9 (0.3) l x min(-1) at a canter. During the jumping session, rider VO2 was 2 (0.33) l x min(-1) with a mean HR of 155 beats x min(-1) during canter in suspension, obstacle trot and obstacle canter. The jumping course significantly enhanced VO2 and HR up to mean values of 2.40 (0.35) l x min(-1) and 176 beats x min(-1), respectively. The comparison among horses and riders during the dressage session shows differences in energy expenditure according to the horse for the same rider and between riders. During the jumping session, there was no statistical difference between riders riding known and unknown horses. In conclusion these data confirm that riding induces a significant increase in energy expenditure. During jumping, a mean value of 75% VO2max was reached. Therefore, a good aerobic capacity seems to be a factor determining riding performance in competitions. Regular riding practice and additional physical training are recommended to enhance the physical fitness of competitive riders.  
  Address Universite Paris XII-STAPS-61, Creteil, France. Mfdevienne@aol.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 1439-6319 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:10985607 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3731  
Permanent link to this record
 

 
Author Alexander, F.; Chowdhury, A.K. openurl 
  Title (up) Enzymes in the ileal juice of the horse Type Journal Article
  Year 1958 Publication Nature Abbreviated Journal Nature  
  Volume 181 Issue 4603 Pages 190  
  Keywords *Enzymes; *Horses; Ileum/*metabolism; *Enzymes; *Horses; *ILEUM/metabolism  
  Abstract  
  Address  
  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 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:13504127 Approved no  
  Call Number refbase @ user @ Serial 121  
Permanent link to this record
 

 
Author Barwick, R.S.; Mohammed, H.O.; McDonough, P.L.; White, M.E. openurl 
  Title (up) Epidemiologic features of equine Leptospira interrogans of human significance Type Journal Article
  Year 1998 Publication Preventive Veterinary Medicine Abbreviated Journal Prev Vet Med  
  Volume 36 Issue 2 Pages 153-165  
  Keywords Animals; Horse Diseases/epidemiology/*microbiology; Horses/microbiology; Humans; *Leptospira interrogans; New York/epidemiology; Weil Disease/epidemiology/microbiology/*veterinary; Zoonoses/epidemiology/*microbiology  
  Abstract Leptospirosis is a zoonotic bacterial disease caused by Leptospira interrogans. There is a serologic evidence that horses are exposed to L. interrogans and, as a shedder of these organisms, can be a threat to humans. We examined risk factors associated with the risk of testing seropositive to three L. interrogans serovars (L. icterohaemorrhagiae, L. grippotyphosa, and L. canicola) in the horses of New York State, in order to understand the epidemiology of the disease and suggest strategies to control and prevent equine leptospirosis. To carry out this study, blood samples were collected from a random sample of 2551 horses and tested for the presence of antibodies to the above serovars using the microscopic agglutination test. Samples with a titer $100 were considered positive. Clinical and demographic data were collected on each horse, the farms' management practices and ecology. Logistic regression analysis was used to develop a multivariate indexing system and to identify factors significantly associated with the risk of leptospirosis. Four indices were developed based on the possible sources of exposure: rodent exposure index; wildlife exposure index; soil and water index; and management index. The soil and water index was significantly associated with the risk of exposure to all three serovars. Management was positively associated with L. icterohaemorrhagiae and L. canicola. Density of horses turned out together was positively associated with the risk of exposure to L. grippotyphosa. We concluded that indirect exposure of horses to L. interrogans through contaminated soil and water appears to be significantly associated with the risk of exposure to all three serovars. Management appears to play an important role in the exposure to L. interrogans. Modification of management practices might reduce the horses' risk of exposure and hopefully minimize the human hazards.  
  Address Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, 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 0167-5877 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:9762736 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2653  
Permanent link to this record
 

 
Author Tumova, B. openurl 
  Title (up) Equine influenza--a segment in influenza virus ecology Type Journal Article
  Year 1980 Publication Comparative Immunology, Microbiology and Infectious Diseases Abbreviated Journal Comp Immunol Microbiol Infect Dis  
  Volume 3 Issue 1-2 Pages 45-59  
  Keywords Animals; Antigens, Viral; Genes, Viral; Horse Diseases/*microbiology; Horses; Influenza A virus/immunology/pathogenicity/*physiology; Orthomyxoviridae Infections/microbiology/*veterinary; Viral Proteins/analysis  
  Abstract  
  Address  
  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 0147-9571 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:6258849 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2691  
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