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Obergfell, J. |
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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 |
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2012 |
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Pferde, Ruheverhalten, Liegeverhalten, Aggressionsverhalten, Strukturelemente, Rangordnung [horses, rest behavior, lying behavior, aggression behavior, structural elements, rank order] |
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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.] |
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Karlsruhe |
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Equine Behaviour @ team @ |
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5772 |
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Author |
Stucke, Diana |
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Title |
Überprüfung der Anwendbarkeit der „Chronopsychobiologischen Regulationsdiagnostik“ (CRD) zur Beurteilung von Belastungssituationen und Bestimmung von Stressreaktionstypen bei Pferden |
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Pferd, Stressmessung, CRD; horse, stress measurement, CRD |
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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. |
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Tierärztliche Hochschule Hannover |
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Hannover |
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Equine Behaviour @ team @ |
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5815 |
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Author |
Krueger, K. (ed) |
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Proceedings of the 2. International Equine Science Meeting |
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2012 |
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IESM 2012 |
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Xenophon Publishing |
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Wald |
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Krueger, K. |
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Equine Behaviour @ team @ |
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6008 |
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Palme, R.; Touma, C.; Arias,N.; Dominchin, M.F.; Lepschy, M. |
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Steroid extraction: Get the best out of faecal samples |
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2012 |
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Veterinary Medicine Austria |
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Vet. Med. Austria |
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100 |
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238-246 |
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Faecal steroid hormone metabolites are becoming increasingly popular as parameters for reproductive functions and stress. Theextraction of the steroids from the faecal matrix represents the initial step before quantification can be performed. The steroid metabolites present in the faecal matrix are of varying polarity and composition, so selection of a proper extraction procedure is essential. There have been some studies to address this complex but often neglected point. Radiolabelled
steroids (e.g. cortisol or progesterone) have frequently been added to faecal samples to estimate the efficiency of the extraction procedures used. However, native, unmetabolized steroids are normally not present in the faeces and therefore the results are artificial and do not accurately reflect the actual recoveries of the substances of interest. In this respect, recovery experiments based on faecal samples from radiometabolism studies are more informative. In these samples, the metabolite content accurately reflects the mixture of metabolites present in the given species. As a result, it is possible to evaluate different extraction methods for use with faecal samples. We present studies on sheep, horses, pigs, hares and dogs that utilized samples containing naturally metabolized, 14C-labelled steroids. |
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Review, faeces, extrac- tion, non-invasive hormone moni- toring, stress, reproduction. |
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Equine Behaviour @ team @ |
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6046 |
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McGreevy, P. |
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Equine Behavior A Guide for Veterinarians and Equine Scientists |
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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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978-0-7020-2634-8 |
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Equine Behaviour @ team @ |
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6154 |
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Author |
Selby, A.; Smith-Osborne, A. |
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A Systematic Review of Effectiveness of Complementary and Adjunct Therapies and Interventions Involving Equines |
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2012 |
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Health psychology : official journal of the Division of Health Psychology, American Psychological Association |
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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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Equine Behaviour @ team @ |
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6186 |
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Heyes, C. |
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What's social about social learning? |
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2012 |
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J Comp Psychol |
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120 |
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Equine Behaviour @ team @ Heyes2012 |
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6228 |
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Smaers, J.B.; Dechmann, D.K.N.; Goswami, A.; Soligo, C.; Safi, K. |
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Comparative analyses of evolutionary rates reveal different pathways to encephalization in bats, carnivorans, and primates |
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2012 |
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Proc Natl Acad Sci U S A |
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109 |
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Equine Behaviour @ team @ Smaers2012 |
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6238 |
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Benson-Amram, S.; Holekamp, K.E. |
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Innovative problem solving by wild spotted hyenas |
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2012 |
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Proc R Soc B |
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Proc R Soc B |
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279 |
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4087-4095 |
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Equine Behaviour @ team @ Benson-Amram2012 |
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6266 |
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Thornton, A.; Samson, J. |
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Innovative problem solving in wild meerkats |
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2012 |
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Anim Behav |
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83 |
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Equine Behaviour @ team @ Thornton2012 |
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6267 |
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