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Author Oikawa, M.; Hobo, S.; Oyamada, T.; Yoshikawa, H. doi  openurl
  Title Effects of Orientation, Intermittent Rest and Vehicle Cleaning During Transport on Development of Transport-related Respiratory Disease in Horses Type Journal Article
  Year 2005 Publication Journal of Comparative Pathology Abbreviated Journal (up)  
  Volume 132 Issue 2-3 Pages 153-168  
  Keywords horse; respiratory disease; transit fever; transit stress  
  Abstract Summary The effects of various factors on the inflammatory and stress response in horses during transportation were examined in Experiments 1 and 2, carried out in April and August, respectively. In Experiment 1, three groups (G1-G3) of four Thoroughbreds were used, and in Experiment 2, two groups (G4, G5). G1 animals were loaded into lorries with their heads facing forwards (FF) and given periods of short rest (SR) (30 min for every 4 h driven). G2 horses were loaded facing rearwards (FR) and given SR. G3 horses were FF and given periods of long rest (LR) (2 h rest for every 4 h driven). G4 horses were transported FF with hay suspended in front of them and no cleaning of faeces or urine during rest stops. G5 horses were FF and given pellets instead of hay, and the lorry was cleaned and washed at each rest stop. G4 and G5 horses were rested for 1 h after every 5 h of driving. All groups were driven a distance of 1500 km, and the total journey time was 37 h for G1 and G2, 49 h for G3, and 40 h for G4 and G5. In Experiment 1, indicators of inflammatory and stress responses tended to be highest in G1, intermediate in G2 and lowest in G3. In Experiment 2 they tended to be higher in G4 than in G5. The results suggested that increasing the rest time and cleaning the interior of the vehicle during rest stops reduced transportation stress and respiratory insults, factors that may lead to respiratory disease.  
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  Call Number Equine Behaviour @ team @ Serial 3693  
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Author Thoren Hellsten, E.; Viklund, A.; Koenen, E.P.C.; Ricard, A.; Bruns, E.; Philipsson, J. url  doi
openurl 
  Title Review of genetic parameters estimated at stallion and young horse performance tests and their correlations with later results in dressage and show-jumping competition Type Journal Article
  Year 2006 Publication Livestock Science Abbreviated Journal (up)  
  Volume 103 Issue 1-2 Pages 1-12  
  Keywords Genetic parameters; Sport horse; Performance test; Competition; Dressage; Show-jumping  
  Abstract Results from performance tests and competitions of young horses are used by major European warmblood horse breeding associations for genetic evaluations. The aim of this review was to compare genetic parameters for various tests of young horses to assess their efficiency in selection for dressage and show-jumping. Improved understanding of genetic information across countries is also necessary, as foreign trade with semen is rapidly increasing. The review is based on inquiries to European breed associations and on (17) scientific publications available, which have analysed genetic parameters of young horse data and/or relationships between young and mature horse results in sport. Despite differences in testing methods of young horses, results for major horse populations were in good agreement. Specially designed young horse performance tests, including stallion tests, showed high heritabilities and high genetic correlations with later competition results. We recommend that test results are encouraged to be used across countries for genetic evaluation of imported stallions and semen. Short station tests are generally preferred when selecting stallions for both dressage and jumping traits, whereas competition data may be used when selecting for only one discipline. We also recommend that extensive field testing of young horses is encouraged and should include both genders.  
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  Call Number refbase @ user @ Serial 3951  
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Author Beaugrand, J.P. url  openurl
  Title Relative importance of initial individual differences, victory and defeat experiences, and assessment accuracy during hierarchy formation: A simulation study Type Miscellaneous
  Year 1997 Publication Cogprints Abbreviated Journal (up)  
  Volume 41 Issue Pages 177-192  
  Keywords Dominance; Hierarchy formation; RHP; agonistic experience; Assessment; Self-organization; Simulation  
  Abstract This simulation study explores some conditions leading to transitivity within dominance orders. Combinations of three parameters were varied to study their consequences upon hierarchy formation and upon the degree of linearity of resultant structures. The factors studied were (i) the importance of initial Resource Holding Potentials (RHPs) , (ii) changes brought in RHPs by successive victories and defeats, and (iii) accuracy of RHP assessment made by opponents. Results show that initial differences in RHP always lead to perfectly transitive chains whose rank order reflects the importance of initial differences. Even when simulated animals make important errors while assessing each other during round robin tournaments, emerging dominance structures are perfectly linear and ranks obtained in the structure are highly correlated with initial values in RHPs. Moreover, accumulated experiences of victory and/or defeat alone always lead to perfectly linear hierarchies. Their combination with initial individual differences in RHP led to the same conclusion. Even when assessment was far from being perfect, not only perfect chains were formed but initial values in RHPs significantly influenced rank order when the contribution of victory and defeat to RHP was relatively unimportant. The higher the importance of victory and defeat to RHP as compared to that of initial RHP values, the lower was the correlation between initial RHP values and the ranks order reached by individuals in the resultant hierarchies. In general also, the lower the variation within initial RHPs, the lower was the correlation between initial RHPs and ranks in the hierarchy. At a given level of initial RHP dispersion, increasing the contribution of victory and defeat to RHP diminished the correlation between initial RHP values and obtained ranks. In addition, inaccurate assessment reduced the overall correlation, especially when dispersion of initial RHP values was low and the contribution of victory and defeat was high. These results shed some light on the controversy about the respective roles of initial individual attributes and that of patterns of resolution in the formation of animal hierarchies. We present the emergence of social order within closed systems as those simulated here as a case of self-organization.  
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  Publisher Elsevier Place of Publication Editor  
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  Call Number Equine Behaviour @ team @ cogprints:1965 Serial 4291  
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Author Geutjens, C.A.; Clayton, H.M.; Kaiser, L.J. url  doi
openurl 
  Title Forces and pressures beneath the saddle during mounting from the ground and from a raised mounting platform Type Journal Article
  Year 2008 Publication The Veterinary Journal Abbreviated Journal (up)  
  Volume 175 Issue 3 Pages 332-337  
  Keywords Electronic saddle mat; Total force; Peak pressure; Equestrian; Kinetics  
  Abstract The objective was to use an electronic pressure mat to measure and compare forces and pressures of the saddle on a horse's back when riders mounted from the ground and with the aid of a mounting platform. Ten riders mounted a horse three times each from the ground and from a 35 cm high mounting platform in random order. Total force (summation of forces over all 256 sensors) was measured and compared at specific points on the force-time curve. Total force was usually highest as the rider's right leg was swinging upwards and was correlated with rider mass. When normalized to rider mass, total force and peak pressure were significantly higher when mounting from the ground than from a raised platform (P < 0.05). The area of highest pressure was on the right side of the withers in 97% of mounting efforts, confirming the importance of the withers in stabilizing the saddle during mounting.  
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  Notes Approved no  
  Call Number Admin @ knut @ Serial 4344  
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Author Meschan, E.M.; Peham, C.; Schobesberger, H.; Licka, T.F. url  doi
openurl 
  Title The influence of the width of the saddle tree on the forces and the pressure distribution under the saddle Type Journal Article
  Year 2007 Publication The Veterinary Journal Abbreviated Journal (up)  
  Volume 173 Issue 3 Pages 578-584  
  Keywords Saddle fit; Kinematics; Kinetics; Pressure; Saddletree  
  Abstract As there is no statistical evidence that saddle fit influences the load exerted on a horse's back this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as “too-narrow” if they were one size (2 cm) narrower than the LOF saddle, and “too-wide” if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as “very-wide”. In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm2 +/- 0.10; trot 1.08 N/cm2 +/- 0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm2 +/- 0.09; trot 0.86 N/cm2 +/- 0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm2 +/- 0.06; trot 1.52 N/cm2 +/- 0.19) and very-wide saddles (walk 0.77 N/cm2 +/- 0.06; trot 1.57 N/cm2 +/- 0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm2 +/- 0.10/ 0.63 N/cm2 +/- 0.11; trot 1.33 N/cm2 +/- 0.22/1.27 N/cm2 +/- 0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks.  
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  Call Number Admin @ knut @ Serial 4349  
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Author Fazio, E.; Ferlazzo, A. doi  openurl
  Title Evaluation of Stress During Transport Type Journal Article
  Year 2003 Publication Veterinary Research Communications Abbreviated Journal (up)  
  Volume 27 Issue Pages 519-524  
  Keywords hormones – physiological variables – stress – transport procedures  
  Abstract Domestic animals are transported for a variety of reasons including breeding, biomedical purposes, slaughter and, in the case of sporting horses, for competitions, pleasure activities or ceremonial proceedings. Studies to determine the amount of stress on farm animals during transport often have highly variable results and are difficult to interpret. The reaction of animals to stressors depends on the duration and intensity of the stressors, the animal's previous experience, its physiological status and the immediate environmental restraints. Behavioural, haematological, haematochemical, physiological and neuro-hormonal (ß-endorphin, ACTH, cortisol, iodothyronines) variables are discussed on the basis of handling, loading and transport procedures of animals.  
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  Call Number Equine Behaviour @ team @ Serial 4391  
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Author Koolhaas, J.M.; Korte, S.M.; De Boer, S.F.; Van Der Vegt, B.J.; Van Reenen, C.G.; Hopster, H.; De Jong, I.C.; Ruis, M.A.W.; Blokhuis, H.J. url  doi
openurl 
  Title Coping styles in animals: current status in behavior and stress-physiology Type Journal Article
  Year 1999 Publication Neuroscience & Biobehavioral Reviews Abbreviated Journal (up)  
  Volume 23 Issue 7 Pages 925-935  
  Keywords Coping; Aggression; Stress; Disease; Corticosterone  
  Abstract This paper summarizes the current views on coping styles as a useful concept in understanding individual adaptive capacity and vulnerability to stress-related disease. Studies in feral populations indicate the existence of a proactive and a reactive coping style. These coping styles seem to play a role in the population ecology of the species. Despite domestication, genetic selection and inbreeding, the same coping styles can, to some extent, also be observed in laboratory and farm animals. Coping styles are characterized by consistent behavioral and neuroendocrine characteristics, some of which seem to be causally linked to each other. Evidence is accumulating that the two coping styles might explain a differential vulnerability to stress mediated disease due to the differential adaptive value of the two coping styles and the accompanying neuroendocrine differentiation.  
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  Call Number Equine Behaviour @ team @ Serial 4416  
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Author Stupperich, A.; Strack, M. pdf  openurl
  Title Interaction with horses (equus): Assessment with a circumplex based questionnaire Type Conference Article
  Year 2008 Publication IESM 2008 Abbreviated Journal (up)  
  Volume Issue Pages  
  Keywords human-pet interaction, interpersonal theory, distress  
  Abstract According to Interpersonal Theory every interaction is motivated by efforts to achieve and maintain self-esteem and to avoid anxiety. People“s characteristic ways of accomplishing these ends are called interpersonal reflexes. Those interpersonal reflexes are evident in interaction with animals, since they are determined by the interpersonal traits of personality. We wanted to catch the typical interpersonal reflexes in between humans and horses compared to pet animals.

We used the self rating assessment instrument ”Inventory of Problematic Interactions with Animals" (IPI – Animals), which bases on a Interpersonal Circumplex Model (Human Animal Circumplex; HAC) and was constructed to catch specific dispositions of distress caused by animals using two dimensions (too dominant vrs too submissive and too warm versus too cold). Data of 233 male adolescents (93 of them actual pet owners, from that 12 horse owners) were collected.

We found that different pet preferences holds distinct locations in the HAC. Horse persons differ from dog and cat persons within the dimension dominance (dog: chi2(df126) =161.54 p= .018; cat: chi2(df126) =199.95 p= .045). Persons, who own a horse or would wish to own one, describe themselves as dominant, but warm interactors. They report that they want horses to notice them. They tend do too much for them and behave very effusively with them. On the other hand they feel that the animal takes too much advantage of the relationship.
 
  Address University of Regensburg, Institut für Experimentelle Psychology, Tel ++49 (9482) 90 98 05  
  Corporate Author Stupperich, A. Thesis  
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  Notes Talk 15 min IESM 2008 Approved yes  
  Call Number Equine Behaviour @ team @ Serial 4470  
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Author Nagy, K.; Bodó, G.; Bárdos, G.; Harnos, A. pdf  openurl
  Title Is modified Forssell"s operation superior to cribbing collar in preventing crib-biting in horses? Type Conference Article
  Year 2008 Publication IESM 2008 Abbreviated Journal (up)  
  Volume Issue Pages  
  Keywords stereotypic behaviour, heart-rate variability, stress, equine welfare  
  Abstract Crib-biting (wind-sucking) might be a coping response of the horses to the challenges of

uncontrolled environmental events. Prevention of this stereotypic behaviour evokes

physiological responses consistent with increased stress. Reducing the incidence of cribbiting,

however, is important in order to prevent undesirable physical and behavioural

consequences (tooth erosion, altered gut function, gastric inflammation/ulceration, colic, etc.).

Common treatment of crib-biting is the application of a cribbing collar, which limits the

flexion of the neck making this stereotypic movement uncomfortable and difficult. Another

method, the modified Forssell“s operation, is becoming more and more popular amongst the

horse owners. It is based on the removal of the muscles used in crib-biting (m.omohyoideus,

m.sternohyoideus, m.sternothyrohyoideus) and the ventral branches of the spinal accessory

nerves. Surveys on the success of this surgical procedure have revealed inconsistent results,

and, contrary to the cribbing collar, its effect on the stress level have not been studied either.

The aim of our study was to determine whether the modified Forssell”s procedure is superior

to the cribbing collar treatment.

Differences in stress management was tested by a crib-biting provoking test, in which

surgically treated horses, crib-biting horses, crib-biting horses with cribbing collar, and

normal horses (those showing no stereotypies), altogether 56 horses were compared. In this

test, a food bucket had been placed out of the reach of the animal, from which titbits were

given 3 times. Behaviour and heart rate variability (HRV) of the horses were recorded and

analysed throughout the test. Hypotheses were tested by linear mixed model.

According to our results, both prevention methods (collar or surgery) inhibited crib-biting

successfully though not totally. Regarding behaviour and heart rate variability, horses

prevented from crib-biting (by collar or surgery) differed significantly from crib-biting and

normal horses but not from each other.

Normal horses were usually trying to reach the food-bucket while present and were standing

still afterwards, whereas the other three groups had not really made efforts to reach the

bucket, spent less time with resting, and performed or tried crib-biting. During the stress-test,

normal and crib-biting horses had shown good stress-adaptation to the challenge since their

HRV, after an initial increase, returned to the basal value by the end. On the contrary, HRV of

the two prevented groups remained elevated and showed large oscillations throughout. They

had not found a successful coping behaviour either.

Our results suggest that since prevention may significantly increase distress, the treatment in

itself, without changing the motivation of the horse to perform the replacement behaviour – it

seems to be unsatisfactory and insufficient. After prevention the motivation of the horse to

perform crib-biting should be addressed. In addition, considering that prevention by collar and

surgery had not resulted in any significant behavioural or physiological differences, the

superiority of the modified Forssell"s procedure might be questioned. However, the surgery

might be recommended if treatment with collar is ineffective.
 
  Address Szent István University, Faculty of Veterinary Sciences, Budapest, István u. 2, H-1078, Hungary;Eötvös Loránd University, Department of Physiology and Neurobiology, Budapest, Pázmány P. stny. 1/C, H-1117, Hungary  
  Corporate Author Nagy, K. Thesis  
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  Area Expedition Conference IESM 2008  
  Notes Talk 15 min IESM 2008 Approved yes  
  Call Number Equine Behaviour @ team @ Serial 4492  
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Author Drummond, H. doi  openurl
  Title Dominance in vertebrate broods and litters Type Journal Article
  Year 2006 Publication Quarterly Review of Biology Abbreviated Journal (up)  
  Volume 81 Issue 1 Pages 3-32  
  Keywords Aggression; Assessment; Dominance; Individual recognition; Sibling conflict; Trained losing  
  Abstract Drawing on the concepts and theory of dominance in adult vertebrates, this article categorizes the relationships of dominance between infant siblings, identifies the behavioral mechanisms that give rise to those relationships, and proposes a model to explain their evolution. Dominance relationships in avian broods can be classified according to the agonistic roles of dominants and subordinates as “aggression-submission,” “aggression-resistance, ” “aggression-aggression,” “aggression-avoidance,” “rotating dominance,” and “flock dominance.” These relationships differ mainly in the submissiveness/pugnacity of subordinates, which is pivotal, and in the specificity/generality of the learning processes that underlie them. As in the dominance hierarchies of adult vertebrates, agonistic roles are engendered and maintained by several mechanisms, including differential fighting ability, assessment, trained winning and losing (especially in altricial species), learned individual relationships (especially in precocial species), site-specific learning, and probably group-level effects. An evolutionary framework in which the species-typical dominance relationship is determined by feeding mode, confinement, cost of subordination, and capacity for individual recognition, can be extended to mammalian litters and account for the aggression-submission and aggression-resistance observed in distinct populations of spotted hyenas and the “site-specific dominance” (teat ownership) of some pigs, felids, and hyraxes. Little is known about agonism in the litters of other mammals or broods of poikilotherms, but some species of fish and crocodilians have the potential for dominance among broodmates. Copyright © 2006 by The University of Chicago. All rights reserved.  
  Address Instituto de Ecología, Universidad Nacional Autónoma de México, A.P. 70-275, 04510 D.F., Mexico  
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  Notes Cited By (since 1996): 20; Export Date: 23 October 2008; Source: Scopus Approved no  
  Call Number Equine Behaviour @ team @ Serial 4559  
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