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Bauer, G.B. |
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Title |
Research Training for Releasable Animals |
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2005 |
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Conservation Biology |
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19 |
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1779-1789 |
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refbase @ user @ |
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3507 |
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Author |
Bauer, I. E.; McMorrow, J. Yalden,; D. W. |
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Title |
The Historic Ranges of Three Equid Species in North-East Africa: A Quantitative Comparison of Environmental Tolerances |
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Journal Article |
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1994 |
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Journal of Biogeography |
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J Biogeogr |
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21 |
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2 |
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169-182 |
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The historic ranges of three equid species native to north-east Africa are analysed with respect to annual rainfall, several temperature parameters and a satellite-derived multispectral index of primary productivity. Equus africanus Fitzinger, Equus grevyi Oustalet and Equus burchelli Gray used to largely replace each other, geographically, with narrow zones of range overlap occurring between E. africanus and E. grevyi in the Awash valley, and between E. grevyi and E. burchelli in southern Ethiopia and northern Kenya. The three species are shown to succeed each other along an environmental gradient. The position of each species on this gradient and the resulting location and extent of its range are discussed. Competitive exclusion, specific adaptations and historic events are likely determinants of equid distribution. In the area of sympatry between E. grevyi and E. burchelli, mixed habitat characters as well as environmental fluctuations seem to prevent either species from excluding the other. Different social organizations of E. grevyi and E. burchelli and the resulting migratory patterns may be adaptations to the environment in their allopatric ranges; in their sympatric range they could alleviate competition. |
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Equine Behaviour @ team @ |
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2222 |
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Bernauer, K.; Kollross, H.; Schuetz, A.; Farmer, K.; Krueger, K. |
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Title |
How do horses (Equus caballus) learn from observing human action? |
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Journal Article |
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Year |
2020 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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23 |
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1-9 |
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A previous study demonstrated that horses can learn socially from observing humans, but could not draw any conclusions about the social learning mechanisms. Here we develop this by showing horses four different human action sequences as demonstrations of how to press a button to open a feed box. We tested 68 horses aged between 3 and 12 years. 63 horses passed the habituation phase and were assigned either to the group Hand Demo (N = 13) for which a kneeling person used a hand to press the button, Head Demo (N = 13) for which a kneeling person used the head, Mixed Demo (N = 12) for which a squatting person used both head and hand, Foot Demo (N = 12) in which a standing person used a foot, or No Demo (N = 13) in which horses did not receive a demonstration. 44 horses reached the learning criterion of opening the feeder twenty times consecutively, 40 of these were 75% of the Demo group horses and four horses were 31% of the No Demo group horses. Horses not reaching the learning criterion approached the human experimenters more often than those who did. Significantly more horses used their head to press the button no matter which demonstration they received. However, in the Foot Demo group four horses consistently preferred to use a hoof and two switched between hoof and head use. After the Mixed Demo the horses' actions were more diverse. The results indicate that only a few horses copy behaviours when learning socially from humans. A few may learn through observational conditioning, as some appeared to adapt to demonstrated actions in the course of reaching the learning criterion. Most horses learn socially through enhancement, using humans to learn where, and which aspect of a mechanism has to be manipulated, and by applying individual trial and error learning to reach their goal. |
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1435-9456 |
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Equine Behaviour @ team @ Bernauer2019 |
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6590 |
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Author |
Brauer, J.; Kaminski, J.; Riedel, J.; Call, J.; Tomasello, M. |
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Title |
Making inferences about the location of hidden food: social dog, causal ape |
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Journal Article |
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Year |
2006 |
Publication |
Journal of comparative psychology |
Abbreviated Journal |
J Comp Psychol |
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120 |
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1 |
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38-47 |
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Animals; Communication; Cues; Dogs; Exploratory Behavior; *Feeding Behavior; Female; *Food; Male; Pan paniscus; Pan troglodytes; *Visual Perception |
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Domestic dogs (Canis familiaris) and great apes from the genus Pan were tested on a series of object choice tasks. In each task, the location of hidden food was indicated for subjects by some kind of communicative, behavioral, or physical cue. On the basis of differences in the ecologies of these 2 genera, as well as on previous research, the authors hypothesized that dogs should be especially skillful in using human communicative cues such as the pointing gesture, whereas apes should be especially skillful in using physical, causal cues such as food in a cup making noise when it is shaken. The overall pattern of performance by the 2 genera strongly supported this social-dog, causal-ape hypothesis. This result is discussed in terms of apes' adaptations for complex, extractive foraging and dogs' adaptations, during the domestication process, for cooperative communication with humans. |
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Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. jbraeuer@eva.mpg.de |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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Notes |
PMID:16551163 |
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yes |
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Call Number |
refbase @ user @ |
Serial |
597 |
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Author |
Burger, D.; Baumgartner, M.; Schauer, S. N.; Wägeli, S.; Aurich, C.; Gerber, V. |
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Title |
Influence of the recipient mare on character traits of adult offspring in a Warmblood embryo transfer program – preliminary results |
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Conference Article |
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Year |
2008 |
Publication |
IESM 2008 |
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The influence of recipient mares in commercial embryo transfer (ET) programs
on behavior of the ET foals is a matter of great interest and controversial discussion.
Presently, no interdisciplinary ethological and reproductive studies on this topic exist.
However, empirical experience suggests that behavioral traits of the recipient mare do not
influence those of the foal, thus implying a predominantly genetic origin of a horse“s basic
character. Aim: The aim of the present study was to investigate the influence of recipient
mares on behavioural traits of their ET products.
Materials and Methods: Based on records of the embryo transfer program in Warmblood
horses since 1990 at the Swiss National Stud, questionnaires concerning behavior,
stereotypies and mother-foal-relationship were designed and completed by telephone
interview: 18 scientifically assessed questions provided the basis for a linear description
(Equine Personality Assessment Questionnaire, Lloyd et al., 2007). They were grouped in a)
emotivity, b) social motivation, c) general level of activity, d) stress behavior, e) learning
capacity and f) reactions towards humans. Questionnaires were designed for the owners of the
ET offspring (minimum of three years of age), the sires, donor mares and the recipient mares.
Out of 200 questionnaires, 25 complete ET families have emerged so far and were analysed.
All genetic parents were Warmblood horses, as were 23 of the recipient mares, the other two
were Franches-Montagnes horses.
Results: Comparing the mean values of the four groups (genetic dam and sire, recipient mare
and ET product), significant differences were found for the parameters emotivity (sires lower,
p<0.001), learning behaviour (recipient mares lower, p<0.05) and activity (recipient mares
lower, p<0.05). With only one exception, the multiple variable regression analysis found no
significant influence of the recipient mare on the ET product. The only significant effect
observed, was that of the social motivation of the recipient mare on the learning capacity of
the ET offspring (r2= -0.421, p<0.05). In contrast, numerous significant effects of behavioural
traits of the genetic dams and sires on their ET offspring (10 and 8, respectively) were
observed.
Conclusions: These preliminary results confirm field observations that the influence of the
recipient mare does not play an important role in character development of the ET offspring.
However, the investigated parameters indicate that the behavioural traits of the genetic parents
appear to have a strong influence on the offspring”s behaviour.. This study model promises
new achievements in the evaluation of genetic and environmental effects on the behavior of a
horse.
References
Lloyd, AS, Martin, JE, Bornett-Gauci, HLI, Wilkinson, RG (2007). Evaluation of a novel
method of horse personality asses |
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Baumgartner, M. |
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IESM 2008 |
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Talk 15 min IESM 2008 |
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yes |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4485 |
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Author |
Call, J.; Brauer, J.; Kaminski, J.; Tomasello, M. |
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Title |
Domestic dogs (Canis familiaris) are sensitive to the attentional state of humans |
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Journal Article |
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2003 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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117 |
Issue |
3 |
Pages |
257-263 |
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Keywords |
Animals; *Appetitive Behavior; *Attention; *Bonding, Human-Pet; *Concept Formation; Cues; Dogs/*psychology; Female; Humans; *Inhibition (Psychology); Male; Nonverbal Communication |
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Twelve domestic dogs (Canis familiaris) were given a series of trials in which they were forbidden to take a piece of visible food. In some trials, the human continued to look at the dog throughout the trial (control condition), whereas in others, the human (a) left the room, (b) turned her back, (c) engaged in a distracting activity, or (d) closed her eyes. Dogs behaved in clearly different ways in most of the conditions in which the human did not watch them compared with the control condition, in which she did. In particular, when the human looked at them, dogs retrieved less food, approached it in a more indirect way, and sat (as opposed to laid down) more often than in the other conditions. Results are discussed in terms of domestic dogs' social-cognitive skills and their unique evolutionary and ontogenetic histories. |
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Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. call@eva.mpg.de |
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Washington, D.C. : 1983 |
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English |
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0735-7036 |
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PMID:14498801 |
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refbase @ user @ |
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713 |
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Author |
Flack, J.C.; de Waal, F.B.M.; Krakauer, D.C. |
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Title |
Social structure, robustness, and policing cost in a cognitively sophisticated species |
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Journal Article |
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2005 |
Publication |
The American Naturalist |
Abbreviated Journal |
Am Nat |
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165 |
Issue |
5 |
Pages |
E126-139 |
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Animals; *Behavior, Animal; Cognition; Conflict (Psychology); Female; Macaca nemestrina/*physiology; Male; Models, Biological; *Social Behavior |
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Abstract |
Conflict management is one of the primary requirements for social complexity. Of the many forms of conflict management, one of the rarest and most interesting is third-party policing, or intervening impartially to control conflict. Third-party policing should be hard to evolve because policers personally pay a cost for intervening, while the benefits are diffused over the whole group. In this study we investigate the incidence and costs of policing in a primate society. We report quantitative evidence of non-kin policing in the nonhuman primate, the pigtailed macaque. We find that policing is effective at reducing the intensity of or terminating conflict when performed by the most powerful individuals. We define a measure, social power consensus, that predicts effective low-cost interventions by powerful individuals and ineffective, relatively costly interventions by low-power individuals. Finally, we develop a simple probabilistic model to explore whether the degree to which policing can effectively reduce the societal cost of conflict is dependent on variance in the distribution of power. Our data and simple model suggest that third-party policing effectiveness and cost are dependent on power structure and might emerge only in societies with high variance in power. |
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Santa Fe Institute, Santa Fe, New Mexico 87501, USA. jflack@santafe.edu |
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ISSN |
1537-5323 |
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PMID:15795848 |
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refbase @ user @ |
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168 |
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Flack, J.C.; Girvan, M.; de Waal, F.B.M.; Krakauer, D.C. |
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Title |
Policing stabilizes construction of social niches in primates |
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Journal Article |
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Year |
2006 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
439 |
Issue |
7075 |
Pages |
426-429 |
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Keywords |
Animals; Conflict (Psychology); Female; Macaca nemestrina/*physiology/*psychology; Male; Models, Biological; *Social Behavior |
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All organisms interact with their environment, and in doing so shape it, modifying resource availability. Termed niche construction, this process has been studied primarily at the ecological level with an emphasis on the consequences of construction across generations. We focus on the behavioural process of construction within a single generation, identifying the role a robustness mechanism--conflict management--has in promoting interactions that build social resource networks or social niches. Using 'knockout' experiments on a large, captive group of pigtailed macaques (Macaca nemestrina), we show that a policing function, performed infrequently by a small subset of individuals, significantly contributes to maintaining stable resource networks in the face of chronic perturbations that arise through conflict. When policing is absent, social niches destabilize, with group members building smaller, less diverse, and less integrated grooming, play, proximity and contact-sitting networks. Instability is quantified in terms of reduced mean degree, increased clustering, reduced reach, and increased assortativity. Policing not only controls conflict, we find it significantly influences the structure of networks that constitute essential social resources in gregarious primate societies. The structure of such networks plays a critical role in infant survivorship, emergence and spread of cooperative behaviour, social learning and cultural traditions. |
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Santa Fe Institute, Santa Fe, New Mexico 87501, USA. jflack@santafe.edu |
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1476-4687 |
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PMID:16437106 |
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refbase @ user @ |
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298 |
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Author |
Flack, J.C.; Krakauer, D.C.; de Waal, F.B.M. |
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Title |
Robustness mechanisms in primate societies: a perturbation study |
Type |
Journal Article |
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Year |
2005 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
272 |
Issue |
1568 |
Pages |
1091-1099 |
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Keywords |
Aggression/physiology; Animals; *Conflict (Psychology); Female; *Hierarchy, Social; Macaca nemestrina/*physiology; Male; *Models, Theoretical; Observation; *Social Behavior |
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Conflict management mechanisms have a direct, critical effect on system robustness because they mitigate conflict intensity and help repair damaged relationships. However, robustness mechanisms can also have indirect effects on system integrity by facilitating interactions among components. We explore the indirect role that conflict management mechanisms play in the maintenance of social system robustness, using a perturbation technique to 'knockout' components responsible for effective conflict management. We explore the effects of knockout on pigtailed macaque (Macaca nemestrina) social organization, using a captive group of 84 individuals. This system is ideal in addressing this question because there is heterogeneity in performance of conflict management. Consequently, conflict managers can be easily removed without disrupting other control structures. We find that powerful conflict managers are essential in maintaining social order for the benefit of all members of society. We show that knockout of components responsible for conflict management results in system destabilization by significantly increasing mean levels of conflict and aggression, decreasing socio-positive interaction and decreasing the operation of repair mechanisms. |
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Santa Fe Institute, NM 87501, USA. jflack@santafe.edu |
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0962-8452 |
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PMID:16024369 |
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refbase @ user @ |
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165 |
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Author |
Fürst, A.; Knubben, J.; Kurtz, A.; Auer, J.; Stauffacher, M. |
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Pferde in Gruppenhaltung: Eine Betrachtung aus tierärztlicher Sicht unter besonderer Berücksichtigung des Verletzungsrisikos [Group housing of horses: veterinary considerations with a focus on the prevention of bite and kick injuries] |
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Journal Article |
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Year |
2006 |
Publication |
Pferdeheilkunde |
Abbreviated Journal |
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22 |
Issue |
3 |
Pages |
254-258 |
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Keywords |
Verhalten, Gruppenhaltung, Prävention, Schlagverletzungen, Bissverletzungen, Tierschutz [Behaviour, group housing, prevention, bite injuries, kick injuries, animal protection] |
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Abstract |
Mit der zunehmenden Bedeutung der Gruppenhaltung von Pferden ist die Tierärzteschaft gefordert mitzuhelfen, das Verletzungsrisiko in
Gruppenhaltungssystemen zu verringern. Dem Vermeiden von Schlag- und Bissverletzungen kommt hierbei eine zentrale Bedeutung zu. Präventive
Maßnahmen konzentrieren sich im Wesentlichen auf die Gruppenzusammensetzung und Eingliederung neuer Pferde sowie auf die
Gestaltung der Haltungssysteme. Die Raumaufteilung und die Fütterungstechnik müssen equidentypisches Verhalten (Lokomotion, langandauernde
Futteraufnahme und schadensfreie soziale Interaktionen) erlauben. Es gilt, Kenntnisse über Zusammenhänge zwischen Haltung,
Fütterung, Nutzung, Verhalten und Gesundheit an Pferdehalter und Stallbaufirmen weiterzugeben.
[Although group housing of horses has become common practice, the risk of equine injury is substantial. The veterinary community is challenged
to reduce this risk, particularly with regard to injuries caused by kicking and biting. Preventive measures should focus on the disposition
of horses within the group, the introduction of new horses to the group and the design of the housing facility. Feeding methods as
well as the structure of the environment should meet the physiological requirements for horses; there should be adequate space for exercise,
extended foraging and the possibility of benign social interactions. Veterinarians need to educate horse owners and builders of equine
facilities about the husbandry, feeding, use, behaviour and health of horses.] |
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Equine Behaviour @ team @ |
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5756 |
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