| Records |
| Author |
Morgan, T.W.; Elliott, C.L. |
Title  |
Comparison of remotely-triggered cameras vs. howling surveys for estimating coyote (Canis latrans) Abundance in central Kentucky |
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Journal Article |
| Year |
2011 |
Publication |
J Ky Acad Science |
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72 |
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Equine Behaviour @ team @ Morgan2011 |
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6492 |
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Clayton, H.M.; Hampson, A.; Fraser, P.; White, A.; Egenvall, A. |
| Title |
Comparison of rider stability in a flapless saddle versus a conventional saddle |
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Journal Article |
| Year |
2018 |
Publication |
Plos One |
Abbreviated Journal |
Plos One |
| Volume |
13 |
Issue |
6 |
Pages |
e0196960 |
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| Abstract |
The purpose of a saddle is to improve the rider's safety, security, and comfort, while distributing the forces exerted by the rider and saddle over a large area of the horse's back without focal pressure points. This study investigates the effects on rider stability of an innovative saddle design that differs from a conventional saddle in having no flaps. Five horses were ridden by their regular rider in their usual saddle and in a flapless saddle. A pressure mat (60 Hz) placed between the saddle and the horse's back was used to determine the position of the center of pressure, which represents the centroid of pressure distribution on the horse's back. Data were recorded as five horses were ridden at collected and extended walk, trot and canter in a straight line. Data strings were split into strides with 5 strides analysed per horse/gait/type. For each stride the path of the rider's center of pressure was plotted, maximal and minimal values in the anteroposterior and mediolateral directions were extracted, and ranges of motion in anteroposterior and mediolateral directions were calculated. Differences between the conventional and flapless saddles were analysed using mixed models ANOVA. Speed and stride length of each gait did not differ between saddles. Compared with the conventional saddle, the flapless saddle was associated with significant reductions in range of motion of the rider's center of pressure in the mediolateral direction in all gaits and in the anteroposterior direction in collected trot, extended trot and extended canter. The improved stability was thought to result from the absence of saddle flaps allowing the rider's thighs to lie in more adducted positions, which facilitated the action of the lumbopelvic-hip musculature in stabilizing and controlling translations and rotations of the pelvis and trunk. The closer contact between rider and horse may also have augmented the transfer of haptic information. |
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Public Library of Science |
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Equine Behaviour @ team @ |
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6423 |
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Werhahn, H.; Hessel, E.F.; Van den Weghe, H.F.A. |
| Title |
Competition Horses Housed in Single Stalls (II): Effects of Free Exercise on the Behavior in the Stable, the Behavior during Training, and the Degree of Stress |
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Journal Article |
| Year |
2012 |
Publication |
Journal of Equine Veterinary Science |
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32 |
Issue |
1 |
Pages |
22-31 |
| Keywords |
Horse; Turnout; Single stall; Behavior; Hrv |
| Abstract |
Although housing horses in single stalls limits their natural behavior to a great extent, this housing system is widespread in Germany, especially for competition horses. To improve the welfare of this system, free exercise on pastures or paddocks is deemed suitable, but it is also feared because of injuries and decreased willingness or motivation to perform. In the present study, three treatments were investigated with regard to their effect on the behavior of six competition horses in the stable, behavior during training, and on their degree of stress: daily training without free exercise (no turnout [NT]), solitary turnout for 2 hours after training, and 2-hour turnout in groups of two after training (group turnout). The horses' behavior in the stable was continuously analyzed through video recordings (2 pm to 6 am) on 3 days at the end of each treatment. The degree of stress was evaluated daily by heart rate variability at rest. The behavior during training was evaluated by a questionnaire answered by the riders, and the distance covered during training was measured by global positioning system. When NT was allowed, the horses showed less lying in the stable compared with the treatments with turnout. Heart rate variability measurements resulted in great individual differences, but generally, there was a higher degree of stress shown with the treatment NT according to the following parameters: standard deviation of inter-beat-intervals (SDNN), square root of the mean of the sum of the squares of differences between successive inter-beat-intervals (RMSSD), and ratio between low frequency and high frequency (LF/HF). The willingness to perform was evaluated as being slightly better in the treatments with turnout than in the treatment without turnout. |
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0737-0806 |
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Equine Behaviour @ team @ |
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6626 |
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Langbein, J.; Siebert, K.; Nuernberg, G. |
| Title |
Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus) |
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Journal Article |
| Year |
2008 |
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Behav Proc |
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79 |
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Equine Behaviour @ team @ Langbein2008 |
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6363 |
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Stanley, C.R.; Dunbar, R.I.M. |
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Consistent social structure and optimal clique size revealed by social network analysis of feral goats, Capra hircus |
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Journal Article |
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2013 |
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Anim Behav |
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85 |
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Equine Behaviour @ team @ Stanley2013 |
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6253 |
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van de Waal, E.; Bshary, R. |
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Contact with human facilities appears to enhance technical skills in wild vervet monkeys (Chlorocebus aethiops) |
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Journal Article |
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2010 |
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Folia Primatol |
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81 |
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Equine Behaviour @ team @ van de Waal2010 |
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6265 |
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Van Horik, J.; Clayton, N.; Emery, N. |
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Convergent evolution of cognition in Corvids, Apes and other animals |
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Book Chapter |
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2012 |
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Oxford Handbook of Comparative Evolutionary Psychology |
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Oxford University Press |
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New York |
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Vonk, J.; Shackelford, T. |
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Equine Behaviour @ team @ Van Horik2012 |
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6284 |
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Smolla, M.; Alem, S.; Chittka, L.; Shultz, S. |
| Title |
Copy-when-uncertain: bumblebees rely on social information when rewards are highly variable |
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Journal Article |
| Year |
2016 |
Publication |
Biology letters |
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Biol. Lett. |
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12 |
Issue |
6 |
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To understand the relative benefits of social and personal information use in foraging decisions, we developed an agent-based model of social learning that predicts social information should be more adaptive where resources are highly variable and personal information where resources vary little. We tested our predictions with bumblebees and found that foragers relied more on social information when resources were variable than when they were not. We then investigated whether socially salient cues are used preferentially over non-social ones in variable environments. Although bees clearly used social cues in highly variable environments, under the same conditions they did not use non-social cues. These results suggest that bumblebees use a 'copy-when-uncertain' strategy. |
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Equine Behaviour @ team @ |
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6198 |
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Becker-Birck, M.; Schmidt, A.; Wulf, M.; Aurich, J.; von der Wense, A.; Möstl, E.; Berz, R.; Aurich, C. |
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Cortisol release, heart rate and heart rate variability, and superficial body temperature, in horses lunged either with hyperflexion of the neck or with an extended head and neck position |
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Journal Article |
| Year |
2013 |
Publication |
Journal of Animal Physiology and Animal Nutrition |
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97 |
Issue |
2 |
Pages |
322-330 |
| Keywords |
animal welfare; equitation; stress; training |
| Abstract |
Bringing the head and neck of ridden horses into a position of hyperflexion is widely used in equestrian sports. In our study, the hypothesis was tested that hyperflexion is an acute stressor for horses. Salivary cortisol concentrations, heart rate, heart rate variability (HRV) and superficial body temperature were determined in horses (n = 16) lunged on two subsequent days. The head and neck of the horse was fixed with side reins in a position allowing forward extension on day A and fixed in hyperflexion on day B. The order of treatments alternated between horses. In response to lunging, cortisol concentration increased (day A from 0.73 ± 0.06 to 1.41 ± 0.13 ng/ml, p < 0.001; day B from 0.68 ± 0.07 to 1.38 ± 0.13 ng/ml, p < 0.001) but did not differ between days A and B. Beat-to-beat (RR) interval decreased in response to lunging on both days. HRV variables standard deviation of RR interval (SDRR) and RMSSD (root mean square of successive RR differences) decreased (p < 0.001) but did not differ between days. In the cranial region of the neck, the difference between maximum and minimum temperature was increased in hyperflexion (p < 0.01). In conclusion, physiological parameters do not indicate an acute stress response to hyperflexion of the head alone in horses lunged at moderate speed and not touched with the whip. However, if hyperflexion is combined with active intervention of a rider, a stressful experience for the horse cannot be excluded. |
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Blackwell Publishing Ltd |
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1439-0396 |
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Equine Behaviour @ team @ |
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6182 |
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| Author |
Healy, S.D.; Rowe, C. |
| Title |
Costs and benefits of evolving a larger brain: doubts over the evidence that large brains lead to better cognition |
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Journal Article |
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2013 |
Publication |
Anim Behav |
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86 |
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Equine Behaviour @ team @ Healy2013 |
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6317 |
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