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Author Stucke, Diana openurl 
  Title Überprüfung der Anwendbarkeit der „Chronopsychobiologischen Regulationsdiagnostik“ (CRD) zur Beurteilung von Belastungssituationen und Bestimmung von Stressreaktionstypen bei Pferden Type Manuscript
  Year 2012 Publication Abbreviated Journal  
  Volume Issue Pages (down)  
  Keywords Pferd, Stressmessung, CRD; horse, stress measurement, CRD  
  Abstract In dieser Untersuchung sollte überprüft werden, ob die für die Stressmessung beim Menschen angewandte „Chronopsychobiologische Regulationsdiagnostik“ (CRD) mithilfe des smardwatch®-Messsystems auch beim Pferd psychische Belastungssituationen aussagekräftig widerspiegelt. Menschen können anhand variierender physiologischer und ethologischer Reaktionen auf Stressoren aus der Umwelt in Stresstypen eingeteilt werden. Auch Pferde reagieren in identischen Situationen ganz unterschiedlich. Es stellte sich daher die Frage, ob Pferde ebenfalls bestimmten Stresstypen zugeordnet werden können.

Mit 26 dreijährigen Hengsten des Landgestüts Celle wurde ein Verhaltenstest durchgeführt. Auf der Grundlage wissenschaftlich dokumentierter und modifizierter Testsituationen (Open-Field-Test, Novel-Object-Test, Startling-Test Objekt/Geräusch, Mensch-Pferd-Interaktion, Ressourcenkontrolle) wurde das Erkundungs- und Fluchtverhalten untersucht (Goslar 2011). Während dieser Belastungssituationen wurden mit dem smardwatch®-Messgerät die elektrophysiologischen Parameter Hautwiderstand, Hautpotential und Muskelaktivität erfasst. Durch eine Zeitreihenmessung dieser physiologischen Parameter konnten die Reaktionen des übergeordneten Reglers (vegetatives Nervensystem) dargestellt werden. Der Hautwiderstand spiegelt die vegetativ-emotionalen Reaktionen wider, das Hautpotential die vegetativ-nervalen und somit laut Balzer (2009) die kognitiven Verarbeitungsweisen, und durch das Elektromyogramm werden die typischen muskulär-motorischen Reaktionen aufgezeichnet. Die vorliegenden Datenzeitreihen wurden mit Hilfe einer biorhythmometrischen Zeitreihenanalyse nach Balzer und Hecht (Hecht 2001, Balzer 2009) ausgewertet. Als Ergebnis wurden chronobiologische Regulationszustände definiert, die dann gemäß dem „Periodischen System der Regulationszustände“ (PSR) (Balzer 2000) eine Beurteilung der psychischen Belastungssituation erlauben. Zur Bestimmung von Stresstypen wurde die Untersuchung nach dem Reiz-Reaktions-Prinzip in drei Phasen unterteilt: Ruhephase, Stressreizphase und Stressverarbeitungsphase. Der Verhaltenstest wurde nach einer Woche zur gleichen Tageszeit mit jedem Hengst einmal wiederholt. Als physiologische Vergleichsparameter wurden vor, während und nach der Belastung insgesamt zehn Speichelproben zur Cortisolbestimmung entnommen.

Die smardwatch®-Messtechnik ist prinzipiell geeignet die physiologischen Parameter Hautwiderstand, Hautpotential und Muskelaktivität auf der Haut des Pferdes aufzunehmen. Durch die biorhythmometrische Zeitreihenanalyse konnten chronobiologische Regulationszustände definiert werden.

Der Verhaltenstest führte bei allen Pferden zu einem signifikanten Anstieg der Cortisolwerte. Ein ebenfalls statistisch gesicherter Unterschied der aktivierten Cortisolwerte zwischen der ersten und zweiten Testwoche zeigt eine geringere Stressreaktion und weist auf einen Lerneffekt der Pferde hin:

Entsprechend der relativen Instabilitäten der Regulation der Körperfunktionen in Messphase 2 und 3 konnten die Pferde in vier Stressregulationstypen (nach Balzer u. Hecht 1996) eingeteilt werden: Stressbeherrscher, -bewältiger und kompensierer sowie Stressnichtbewältiger.

Anhand der Aktivierung von Sympathikus und Parasympathikus konnten zusätzlich vier verschiedene Vegetative Stresstypen unterschieden werden: Sympathikotoniker, Amphotoniker, Indifferenter Typ und Vagotoniker.

Die Cortisolreaktion der Hengste war individuell sehr unterschiedlich. Um die maximalen Anstiege vergleichen zu können, wurde der Trend der jeweiligen Cortisolverlaufskurve bestimmt. Anhand der Trend-korrigierten Cortisolkurven konnten einerseits die relativen Maxima der Cortisolreaktion besser verglichen werden, anderseits konnten die Pferde mittels des unterschiedlichen Trendes in drei Cortisolverlaufsgruppen eingeteilt werden: Tendenz fallend, gleichbleibend oder steigend.

Ein statistischer Nachweis für eine Abhängigkeit zwischen den verschiedenen Stresstypenklassifizierungen konnte anhand der geringen Stichprobenzahl nicht erbracht werden. Jedoch lassen sich Pferde, wie Menschen, unterschiedlichen Stresstypen zuordnen. Schwierig bleibt aber die objektive Beurteilung von Befindlichkeiten, da Empfindungen und Gefühle nur subjektiv wahrnehmbare Qualitäten sind, die von einer Reihe innerer und äußerer Faktoren abhängen. Die Verhaltenszuordnung emotionaler Zustände durch die „Chronopsychobiologische Regulationsdiagnostik“ (CRD) kann nicht ohne die Basis weiterer vergleichender Studien vom Mensch auf das Pferd übertragen werden.

Die CRD-Methode könnte allerdings einen interdisziplinären Ansatz ermöglichen und zukünftig neben den klassischen deskriptiven Verhaltensbeobachtungen bei der Beurteilung von Haltungs- und Umgangssituationen von Tieren wertvolle Aufschlüsse über die Fähigkeit zur Stressbewältigung und deren Konsequenzen für das Wohlbefinden der Tiere geben.

In this study we examined, whether the “Chronopsychobiological regulation diagnosis” (CRD) with the smardwatch®-system which is used to assess specific strain in humans, is also able to reflect convincingly specific strain in horses. Humans can be categorized into so-called stress types, because they react differently in physiology and behaviour to environmental stimuli. Concerning horses, it is also known that individuals react differently in identical situations. The question to be answered is, if it is possible to categorize horses into certain stress types as well.

We carried out a behavioural test with 26 three-year-old stallions of the State Stud of Celle, involving different test situations. On the basis of test situations, well known in scientific literature including slight modifications (open-field-test, novel-object-test, startling-test object/sound, human-horse-interaction, resource control) the explorative and flight behaviour of horses were examined (Goslar 2011). During these situations of strain the system smardwatch® measured the electro-physiological parameters skin resistance, skin potential and muscle activity. With time series analyses of these physiological parameters the reactions of the vegetative nervous system as superior control could be shown. The skin resistance reflects the vegetative-emotional, the skin potential the vegetative-nervous hence according to Balzer (2009) cognitive reactions and the electromyogram shows the motorized reactions. The time series of measured data was analyzed using the biorhythmometrical time series analysis of Balzer and Hecht (Hecht 2001, Balzer 2009). As a result of this, typical states of chronobiological regulation were defined. With the help of the “periodic system of regulatory states” (PSR) (Balzer 2000) these led to a classification of mental stress situations. To categorize horses into stress types the study was devided into three phases according to the stimulus-response principle: phase 1 (relaxing), phase 2 (situation of strain) and phase 3 (stimulus processing phase). The behavioural test was repeated once with each stallion exactly one week later. In addition ten samples of saliva were taken before, during and after the situations of strain from which we determined the cortisol concentration to be compared with the chronopsychobiological parameters.

The smardwatch®-measurement technology is fundamentally suitable to measure the physiological parameters skin resistance, skin potential and electrical muscle activity of horses. Using the biorhythmometrical time series analysis, chronobiological regulatory states could be defined for horses as well.

For each horse the cortisol value increased significantly during the behavioural test. A remarkable difference of the cortisol values assessed in the first and second test, indicates a learning effect: The behavioural test led to a significantly lower stress reaction in the second week.

Depending on the proportions of unstable regulation processes during and after the situations of strain, four types of regulation (Balzer u. Hecht 1996) can be defined: the Control-, Cope-, Compensate- and Non-cope-type.

Using the activation of the sympathetic and parasympathetic nervous system four vegetative stress types could be determined: Sympathicotonic, Amphotonic, Indifferent Type and Vagotonic.

The stress reaction of the stallions in terms of cortisol level was quite individual. To compare the maximum increase the trend of each cortisol trajectory was analyzed. On the one hand correcting for the trend allowed a comparison of relative maxima, on the other hand the horses could be categorized into groups, according to the evolution of their cortisol level (cortisol progression groups): Tendency falling, stable or rising.

The number of samples was not considered to be sufficient in order to statistically assess some dependence among the different classifications of stress types. But to our point of view horses can be assigned to different stress types like humans. But it’s still difficult to judge the emotions of animals, because emotions are subjectively perceptible qualities dependent on many internal and external factors. The assignment of emotional behaviour to the chronopsychobiological regulation diagnosis (CRD) can’t be transferred from human to horse without further studies.

However, the CRD method could enable an interdisciplinary approach. Besides classic descriptive observations of behavior, the CRD could give further information about the coping capacity and the consequences for animal welfare in the assessment of stressful situations.
 
  Address  
  Corporate Author Thesis Ph.D. thesis  
  Publisher Tierärztliche Hochschule Hannover Place of Publication Hannover Editor  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5815  
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Author Sigurjonsdottir, H.; Thorhallsdottir, A.; Hafthorsdottir, H.; Granquist S. doi  openurl
  Title The Behaviour of Stallions in a Semiferal Herd in Iceland: Time Budgets, Home Ranges, and Interactions Type Journal Article
  Year 2012 Publication International Journal of Zoology Abbreviated Journal  
  Volume 2012 Issue Article ID 162982 Pages (down)  
  Keywords  
  Abstract A permanent herd of Icelandic horses with four stallions and their harems was studied for a total of 316 hours in a large pasture (215 ha) in May 2007 in Iceland. Interactions between stallions of different harems and other aspects of the horses' behaviour were studied. One stallion and nine horses were introduced into the pasture prior to the study to examine the reactions of the resident stallions to a newcomer. The stallions spent significantly less time grazing than other horses and were more vigilant. Home ranges overlapped, but harems never mixed. The stallions prevented interactions between members of different harems indirectly by herding. Generally, interactions between resident stallions were nonviolent. However, encounters with the introduced stallion were more aggressive and more frequent than between the other stallions. Here, we show that four harems can share the same enclosure peacefully. The social network seems to keep aggression at a low level both within the harems and the herd as a whole. We encourage horse owners to consider the feasibility of keeping their horses in large groups because of low aggression and because such a strategy gives the young horses good opportunities to develop normally, both physically and socially.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 5823  
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Author Krueger, K. (ed) openurl 
  Title Proceedings of the 2. International Equine Science Meeting Type Book Whole
  Year 2012 Publication IESM 2012 Abbreviated Journal  
  Volume Issue Pages (down)  
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  Publisher Xenophon Publishing Place of Publication Wald Editor Krueger, K.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6008  
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Author McGreevy, P. isbn  openurl
  Title Equine Behavior A Guide for Veterinarians and Equine Scientists Type Book Whole
  Year 2012 Publication Abbreviated Journal  
  Volume Issue Pages (down)  
  Keywords  
  Abstract Chapter 1 – Introduction, Pages 1-36

Chapter 2 – Perception, Pages 37-54

Chapter 3 – Behavior and the brain, Pages 55-84, Caroline Hahn

Chapter 4 – Learning, Pages 85-118

Chapter 5 – Social behavior, Pages 119-150

Chapter 6 – Communication, Pages 151-163

Chapter 7 – Locomotory behavior, Pages 165-187

Chapter 8 – Ingestive behavior, Pages 189-215

Chapter 9 – Eliminative behavior, Pages 217-221

Chapter 10 – Body care, Pages 223-243

Chapter 11 – Behavior of the stallion, Pages 245-264

Chapter 12 – Behavior of the mare, Pages 265-290

Chapter 13 – Training, Pages 291-311, Andrew McLean, Paul McGreevy

Chapter 14 – Handling and transport, Pages 313-329

Chapter 15 – Miscellaneous unwelcome behaviors, their causes and resolution, Pages 331-345

Further reading, Page 347

Glossary, Pages 351-356

Index, Pages 357-369
 
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  Series Volume Series Issue Edition  
  ISSN ISBN 978-0-7020-2634-8 Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6154  
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Author Selby, A.; Smith-Osborne, A. doi  openurl
  Title A Systematic Review of Effectiveness of Complementary and Adjunct Therapies and Interventions Involving Equines Type Book Whole
  Year 2012 Publication Health psychology : official journal of the Division of Health Psychology, American Psychological Association Abbreviated Journal  
  Volume 32 Issue Pages (down)  
  Keywords  
  Abstract Objective: This systematic review examines the empirical literature in an emerging body of evidence for the effectiveness of biopsychosocial interventions involving equines across populations with chronic illness or health challenges. Method: Selected quantitative studies published in peer-reviewed journals were reviewed for inclusion; the gray literature and white papers were also explored. Population, Intervention, Comparison, and Outcome (PICO) criteria and Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) were applied to all studies. Fourteen full reports meeting a priori inclusion criteria were extracted from 103 studies accessed through 16 electronic databases and a hand search. Data were synthesized in relation to three research questions informing evidence-based practice. Results: No randomized clinical trials were located. Two studies provided a moderate level of evidence for effectiveness. Nine studies demonstrated statistically significant positive effects. Three studies did not find significant psychosocial effects for the target group, although one found significant positive effects for the comparison group. Conclusion: In the aggregate, the evidence is promising in support of the effectiveness of complementary and adjunct interventions employing equines in the treatment of health challenges. Future studies are needed that utilize rigorous and creative designs, especially longitudinal studies and comparisons with established effective treatments.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 6186  
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Author Heyes, C. url  doi
openurl 
  Title What's social about social learning? Type Journal Article
  Year 2012 Publication J Comp Psychol Abbreviated Journal  
  Volume 120 Issue Pages (down)  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Heyes2012 Serial 6228  
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Author Smaers, J.B.; Dechmann, D.K.N.; Goswami, A.; Soligo, C.; Safi, K. url  doi
openurl 
  Title Comparative analyses of evolutionary rates reveal different pathways to encephalization in bats, carnivorans, and primates Type Journal Article
  Year 2012 Publication Proc Natl Acad Sci U S A Abbreviated Journal  
  Volume 109 Issue Pages (down)  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Smaers2012 Serial 6238  
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Author Thornton, A.; Samson, J. url  doi
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  Title Innovative problem solving in wild meerkats Type Journal Article
  Year 2012 Publication Anim Behav Abbreviated Journal  
  Volume 83 Issue Pages (down)  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Thornton2012 Serial 6267  
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Author Briefer, E.F.; Padilla de la Torre, M.; McElligott, A.G. url  doi
openurl 
  Title Mother goats do not forget their kids' calls Type Journal Article
  Year 2012 Publication Proc R Soc B Abbreviated Journal  
  Volume 279 Issue Pages (down)  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Briefer2012 Serial 6282  
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Author Van Horik, J.; Clayton, N.; Emery, N. openurl 
  Title Convergent evolution of cognition in Corvids, Apes and other animals Type Book Chapter
  Year 2012 Publication Oxford Handbook of Comparative Evolutionary Psychology Abbreviated Journal  
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  Corporate Author Thesis  
  Publisher Oxford University Press Place of Publication New York Editor Vonk, J.; Shackelford, T.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Van Horik2012 Serial 6284  
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