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Klingel, H . |
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Social Organisation of the Equids |
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2008 |
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IESM 2008 |
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Two distinct types of social organisation have evolved in the Equidae. Type 1: In Horse Equus przewalskii, Plains Zebra E. quagga and Mountain Zebra E. zebra the adults live in non-territorial, stable, one-male families and as single bachelors and in bachelor groups. Family stallions have the exclusive mating rights with the mares in their harems. These consist of up to 6 unrelated mares plus their offspring, totalling up to 20 members. Mares stay in their harems until death. Stallions' tenure is from age 5-6 years, i.e. when they succeed in controlling a harem, for close to life time, but are replaced when dead or incapacitated. Harems are stable even in the absence of a stallion, indicating voluntary membership. Adolescent mares leave their parental families to become members of another harem. In Plains Zebra the adolescent mares are abducted, during an oestrus, by suitors who fight the defending family stallion/father. Successful stallions are bachelors who start a family, or family stallions enlarging their harem. Young stallions leave their parental families voluntarily at age 2-3 years and join bachelor stallion groups from where the family stallions are recruited. An individualised dominance hierarchy excists with the stallion in the alpha position. It is based on individual knowledge and recognistion of the members. Type 2: In Grevy's Zebra E. grevyi, African Wild Ass E. africanus and Asiatic Wild Ass E. hemionus adult stallions monopolise territories in which they have the exclusive mating rights. Stallions are tolerant of any conspecifics entering their territory. Bachelor stallions behave subordinately – or fight for the possession of the territory which is a prerequisite for reproduction. Mares join up to form anonymous and unstable groups or herds. The only stable unit is of a mare and her offspring. In Grevy's Zebra mares with foal join preferentially conspecifics of the same soial status, as do mares without foal. Matings take place inside the territory. There is no lasting relationship of the mare with a particular stallion, and the mare may be mated by any stallion whose territory she is visiting. Territories measure up to 10 or more square kilometres, and tenure is for several years. Grevy Zebra territorial owners leave their territories for a few hours to visit a water hole, or for months when grazing and water conditions are below requirements, and re-occupy it upon return, unchallenged. Except for a few small populations, the extant equids live in semi-arid to arid regions where environmental conditions force them to migrate seasonally or opportunistically. The ranges of the various species overlap: Mountain Zebra and Plains Zebra in South Africa and Namibia, Plains Zebra and Grevy's Zebra in Kenya and Ethiopia, Grevy's Zebra and African Wild Ass in Ethiopia, Asiatic Wild Ass and Przewalski Horse in Mongolia andChina. Although, in the overlap zones, individuals of different species are using the same resources like water and grazing simultaneously and next to each other, they rarely make closer contacts. Infanticide has been recorded in captive situations. |
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Technische Universität Braunschweig |
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Klingel, H . |
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IESM 2008 |
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Invited speaker IESM 2008 |
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Equine Behaviour @ team @ |
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4457 |
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Komárková, M.; Dubcova, J. |
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Title |
Factors affecting suckling behaviour in loose housed domestic horses |
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2008 |
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IESM 2008 |
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Suckling, the main part of maternal investment in equids, is crucial for development and social success of the foal. As such it is of great importance in horse breeding. We examined effect of following factors mentioned in literature on behavioural parameters of suckling in loose housed domestic horses: age and sex of the suckling foal, age, parity (primiparous/multiparous), pregnancy (yes/no) and rank of the mother and sex of the foetus if the mother was pregnant. Four variables describing suckling behaviour were modelled: proportion of suckling attempts rejected by the mother, suckling duration, frequency of suckling and proportion of suckling terminated by the mother. Further, suckling terminated by another mare were analyzed. Behavioural observations were conducted at the National Stud Kladruby nad Labem (Czech Republic). Eight groups of loose housed Oldkladruby horse mares with foals were observed from 14 days (in average) after delivery to abrupt weaning (four to six months of age), each foal for 120 days at least. Within two seasons, 10 495 suckling bouts and suckling attempts were observed in 79 foals (32 males, 47 females, mothered by 59 individual mares). Horses were studied with ad libitum sampling for 6 hours per group each 14 days. Dominance status of the mother was assessed using the Clutton-Brock index (Clutton-Brock et al. 1982, Nature 350:178-180), adjusted to the number of mares in each group, and dyadic dominance-submission relationships between all group members (mares) were determined. No significant effect of pregnancy and sex of the foetus on suckling behaviour were found, except the tendency of mothers bearing female foetuses to terminate more suckling. These findings are opposite to literature, where male foetuses were connected with higher rejection rates (Duncan et al. 1984, Anim Behav 32:255-263). However, incidence of suckling attempts rejected by the mother was very low (2.24 %). No effect of pregnancy of the mother could be caused by the stud management; horses are well fed and do not suffer for nutrition stress as horses in the wild may. All variables were negatively affected by increasing foals age (as expected). Neither sex of the suckling foal, nor age of the mother did significantly affect any of the studied variables. The higher dominance rank a mare achieved the higher frequency of other group member suckling she terminated (rs = 0.49, P < 0.0001; Spearman correlation coefficients, PROC CORR, SAS). From suckling terminated by another mare (N = 190), in 93 % (N =177) it is a dominant mare who ends the suckling. Despite these significant results, suckling terminated by another mare were negligible (1.8 % from all observed suckling bouts) and agonistic interactions between dominant and submissive mares seemed not to compromise foal development. In conclusion, in loose housed mares of domestic horse with foals we have found no detrimental effect of any of literally cited factors on suckling behaviour. |
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Charles University, Departement of Zoology, Prague... |
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Komárková, M. |
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IESM 2008 |
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Talk 15 min IESM 2008 |
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Call Number |
Equine Behaviour @ team @ |
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4482 |
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Krueger, K. |
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Social cognition and social learning in horses |
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2008 |
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IESM 2008 |
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In comparison to other social animals it appears to be far more difficult to show social learning in horses, although the social background of the animals prompts the prediction that social learning should be verifiable. This demands for a thorough analysis of conditions, context and effects of social learning which might not be as obvious in horses than in other social animals. Moreover, the horse“s social cognition in general, i.e. the processing, encoding, storage, retrieval, and application of social information, needs to be examined. In previous studies we addressed the horse”s perception of it“s social environment. Our results indicate that domestic horses are not only capable of distinguishing between familiar and unfamiliar horses but also of recognizing the social status of familiar horses relative to their own. Furthermore, they extract information from observing interactions between a familiar horse and a human experimenter, and adjust their behaviour according to the observed horse”s reaction and relative dominance status when they are themselves later confronted with the experimenter in a similar situation. Additionally, we showed in pilot experiments that horses paid more attention to the gaze of dominant horses from their own social group than to that of unknown or subordinate horses. In another study we suggested that horses of both sexes are capable of determining the social affiliation, the sex and, for their own group members, the identity of individuals, by sniffing their faeces. Hence, social affiliation and dominance relationships seemed to have a major influence on the horses` motivation to pay attention to their conspecifics. In the future we will take another step towards linking the horse“s social cognitive capacities with its social ecology, social structure, and individuality. In the context of comparative cognition research on the socially complex primates, or on a range of carnivores such as corvids, canids or dolphins, horses are particularly interesting, because they are highly social, but do not rely on social hunting or cooperative raising of offspring. Also foraging is simple for horses, predator avoidance is demanding and this may be the main reason for the horse”s complex social lives and their choice of learning tactics. Hence, we will investigate the horse"s investigative behaviour towards neutral, fear-eliciting and food related novel objects. We propose that, as in other species, sociality and distinct personalities are key features for the understanding of cognitive capacities and the choice of learning strategies. |
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University of Regensburg – Biology I |
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Krueger, K. |
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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 @ |
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4462 |
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Author |
Krueger, K. (ed) |
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Title |
Proceedings of the International Equine Science Meeting 2008 |
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2008 |
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IESM 2008 |
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Equine Ecology; Equine Sociality; Equine Learning; Equine Cognition; Equine Welfare |
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Target group: Biologists, Psychologists, Veterinarians and Professionals
Meeting target: Because the last international meeting on Equine Science took place a couple years ago, there is an urgent need for equine scientists to exchange scientific knowledge, coordinate research provide knowledge for practical application, and discus research results among themselves and with professionals who work with horses. Additionally, dialog concerning the coordination of the study “Equitation Science” in Europe is urgently needed. Coordination and cooperation shall arise from the meeting, enrich the research, and advance the application of scientific knowledge for the horses` welfare. |
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Xenophon Verlag |
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Wald |
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Krueger, K. |
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English |
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978-3-9808134-0-2 |
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no |
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Equine Behaviour @ team @ |
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4508 |
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Kuhne, F.; Struwe, R.; Balzer, H.U. |
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A new, non-invasive method to assess specific strain in horses |
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2008 |
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IESM 2008 |
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Horses" reactions to normal environmental and training situations play an important
role the human-horse relationship. These demands on horses can either lead some
individuals to withdrawal, immobility or aggressive defence. However, the reaction to
such situations varies greatly among horses, which is reflected in individual
differences in sympathetic, parasympathetic and muscular reactivity. The observable
behavioural responses of the horses seem to be qualitatively related to the internal
state of physiological arousal. In future it should be possible to identify behavioural
signs which really do reflect internal states of the autonomic nervous system to
provide general advice concerning human handling and training in view of reducing
stress in horses.
For these purposes, we have determined responses of the vegetative nervous
system based on variation in skin potential, skin resistance and electromyogram
using non-invasive real-time measurements. All these parameters can be measured
by a SMARD-Watch-System (System of non-invasive Measurement and Analysis
for Regulatory Diagnostics), which can be externally attached to the horses using a
harness.
The physiological data will assess using a time series analysis. Thereby the changes
in the regulatory processes in each of the three physiological systems can be
determined in detail. Based on this analysis characteristic behaviour patterns will be
analysed by the variability of the regulatory processes. According to temporary shifts
in regulatory processes, stable and unstable regulation states will be determined.
Depending on the proportions of unstable regulation processes during and after
external threat, four types of regulation can be defined: the Control, Cope,
Compensate and Non-cope- type. Defined time-windows, for example a ten minutes
lasting pre- and post-test phase and a ten or twenty minutes lasting time-window for
the execution of the specific stimulus have to be chosen to decide these regulation
types.
These four regulation types and the preferred individual behaviour strategies have to
be compared to evaluate the relative frequency of occurrence of a behaviour strategy
depending on responses of the vegetative nervous system. In view of validating
behavioural indicators of emotional reactivity, the aim of this new method is to
characterize individual differences in the behavioural and physiological responses of
horses to normal environmental and training stimuli.
Evidence is provided by human and animal data that the non-invasive real-time
measurement of the vegetative nervous system based on variation in skin potential,
skin resistance etc. is a promising approach for evaluating stress and emotional
states in vertebrates. It will be explained that the chronobiological evaluation of
physiological parameters has the potential to contribute much to our understanding
and assessment of the underlying physiological processes of stress responses in
horses. |
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Division of Animal Welfare and Ethology, Justus-Liebig-University of Giessen, Germany |
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Kuhne, F. |
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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 |
4465 |
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Author |
Lojek, J., Gorska, B. |
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Title |
Day-Time Budgets of Konik Polski Horses (Equus caballus) Maintained in two Housing Systems |
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2008 |
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IESM 2008 |
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A comparison of day-time time budgets of the konik polski horses kept in two different housing systems: free-roaming and in a limited area, was the aim of the study. The observations were carried out in the Biebrza National Park from January to June 2006 on a total of 12 horses (7 females and 5 males) aged from 2 to 5 years. The horses were kept for one year in a free-roaming system on a area of 200 ha where they formed two family bands. Later, during the winter the horses were grouped together in 1 ha enclosure with free access to water, hay given 3 times per day and oats given irregularly mainly in the winter. In the spring horses were let out again into the free-roaming system. A comparison was made of the horses“ behavior characterizing their daily activity in both housing systems. Behavioral data were collected during 122 h of direct observations in 1 hour focal samples in three periods of the day: morning (from dawn to 11:00 am), afternoon (from 11:00 am to 4:00 pm) and in the evening (from 4:00 pm until dusk). The proportion of time spent on feeding and resting behavior and locomotion activity in the total time of the observations, depending on the time of day and sex of the horses, was determined. For the evaluation of the frequency of drinking, comfort, eliminative, sexual and exploratory behavior the number of appeared cases in all horses was added up and divided by the number of observation hours. In spite of significant differences in the intensity of feeding and in the time spent on recumbency found in both housing systems depending on the time of day and sex of the horses, it seems that konik polski horses kept in different housing systems have a tendency to maintain the stable day-time time budgets, which was demonstrated by the similar time of their daily activity spent on feeding (75.9 % of total time in limited area and 71,2 % free-roaming) and resting upright (respectively 16.9 % and 15.8%) as well as cases of urination (0.18 cases/1 hour of observation in limited area and 0.17 in free-roaming in total), self- grooming (respectively 0.40 and 0.56) and mutual-grooming (0.17 and 0.12). But other signs of comfort behavior were observed nearly twice as often in the horses in the limited area (0,42) than in the free roaming system (0,22). The patterns of exploratory behavior were observed decisively more often in the case of horses in limited area (0,5 cases/1 hour of observation) than in the free-roaming system (0,07). The different housing system affected the konik polski horses” time-budget, with decreased time spent in limited area as compared to free-roaming horses in recumbent rest (respectively 2.5 % and 7,0 % of total time), locomotion activity in walk (4.9 % and 8,2 %) and trot (0.006 % and 2,3 %). Due to delivering forage to the paddock the locomotion of the horses related with searching, choosing and eating also decreased. Key words: housing systems, day-time time budgets, konik polski horses |
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Warsaw Agricultural University, Horse Breeding Department |
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Lojek, J. |
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IESM 2008 |
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Poster IESM 2008 |
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yes |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4478 |
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Author |
Malara, L.; De Pasquale, A.; Ingala, A.; Innella, G. |
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The influence of management on horse behavioural reactivity in therapeutic riding programs. |
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2008 |
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IESM 2008 |
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Management; Horses; Therapeutic Riding; Behaviour; Reactivity |
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We investigated 8 horses in five therapeutic riding centres situated in San Cataldo (Caltanissetta – I), Nicosia (Catania – II), Pellaro (Reggio Calabria – III), San Gregorio (Catania – IV), Niguarda Hospitals (Milan – V). The managements of the animals were of different typologies: Type 1, Type 2 and Type 3. In type 1 the horses were used for therapeutic riding only. Furthermore intra and interspecific social interactions were not allowed. In type 2 the horses played kinetic activities and made social interactions. In type 3 the horses were free in paddock, as intra and interspecific social interactions were allowed. The centre I, with a management of type 1, housed 1 horse (A1); the centre II, with a management of type 2, housed 1 horse (B2); the centre III, with a management of type 1, housed 1 horse (C1); the centre IV, with a management of type 2, housed 2 horses (D2 and E2); the centre V, with a management of type 3, housed 3 horses (F3, G3 and H3). Breeds of horses were: Anglo-Arab (n°1), Avelignese (n°3), Italian Selle (n°3), draught-horse crossbreed (n°1). They were 2 geldings and 6 females. Their ages ranged from 12 to 23 years. We observed a total of 64 patients affected by different pathologies: autism, motory handicap, blindness and deafness, children“s cerebral paralysis, relational problems, mental deficiency, Down”s syndrome.
The horses“ behaviour was observed at rest and during therapeutic activities with these patients. The Heart Rate (HR) was used as physiological parameter for an ethological evaluation, measured by a telemetric heart rate monitor (Polar Horse Trainer). Horses were analysed with a reactivity test for emotional homeostasis evaluation, too. Heart rate values were studied with non parametrical statistical analysis methods.
Distinct management typologies provided statistically different basal mean values of heart rate (intergroup and intragroup): Type 1 vs Type 2 (P~0.05) and Type 1 vs Type 3 (P<0.05). The comparison of heart rate during therapeutic activities of diverse management showed the following results: A1 vs B2 (P<0.05), B2 vs C1 (P<0.05), Type 1 vs Type 2 (P<0.01). Different managements, both in the same or different typologies, gave significantly diverse results (A1 vs E2: P~0.05; C1 vs E2: P~0.05; B2 vs E2: P~0.05).
This study shows that the statistic differences obtained by therapies with autistic patients derive from management conditions of Type 1. In reactivity test there aren”t any significant differences among the three management typologies. However, we recorded strong variation between medium and maximum values of heart rate, especially in Type 1 and Type 2 of management.
These high variations of heart rate indicated fear reaction of the horse to new stimuli.
This reaction could lead to dangerous accidents for patients during therapeutic activities.
Horses used in therapeutic riding programs must be evaluated before this employment. Horse's behaviour can be assessed by an ethological observation and a reactivity test. Furthermore, the horses must be guaranteed welfare conditions and must live in an environment enriched with sensorial stimuli and respectful of their physiological and ethological needs. |
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Dept. of Experimental Sciences and Applied Biotechnologies, Unit of Applied Physiology and Comparative Ethology , Faculty of Veterinary Medicine – University of Messina, Italy. |
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Innella, G. |
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IESM 2008 |
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Poster IESM 2008 |
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Equine Behaviour @ team @ |
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4491 |
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McDonnell, S.M. |
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Human-horse interactions: Where are the behaviorists in 2008? |
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2008 |
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IESM 2008 |
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Havemeyer Equine Behavior Program, University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, Pennsylvania USA 19348 |
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This presentation will include commentary on work presented at this meeting as representative of the rapidly growing body of equine behavior science evidence relevant to human-horse interaction and the welfare of domestic, feral, and wild horses.
A substantial literature has accumulated detailing the behavior patterns of wild and feral equid populations, and to some extent the behavior of horses in various domestic environments. Professor Klingel“s and Professor Houpt”s work, begun nearly 40 years ago, continues to inspire colleagues around the world to qualitatively and quantitatively describe behavior of equids in a variety of environments. Several examples of the importance of this type of work to human-horse interaction and horse welfare are evident in throughout the meeting. It forms the basis for assessing the disturbance of behavior in wildlife management projects such as fertility manipulations (Hopkins; Ransom & Cade) or species reintroduction (Kaczensky et al). Study of the apparent variability in observations among the populations will lead to a better understanding of environmental and other factors, which will have fruitful application to welfare of horses both in domestic and natural environments. Unfortunately, this work always brings to mind what I perceive as a nagging threat to horse welfare and quality of human-horse interaction is misinformation concerning natural horse behavior. Natural horse behavior seems to be of great general interest, but unfortunately inaccuracies and misinterpretations are pervasive in popular “horse culture” and continue to be a conspicuous influence on management and training of domestic horses. Unfortunately, this misinformation often makes its way and influences equine education, both lay and equine science/veterinary education. Comparative observational study of behavior of horses in all settings by trained behaviorists, along with research designed to address purported implications for management of domestic horses, along with initiatives to transfer knowledge to educators at all levels should be encouraged.
Included in this meeting is considerable work addressing questions of domestic management practices such as forced weaning, transportation, stabling, and arbitrary grouping and regrouping of horses. This adds to a growing body of applied physiology and behavior research that has established trained behaviorists as a critical resource on teams making decisions on humane management.
Also well represented in work presented at this meeting is the exploration of cognition, perception, and temperament in horses. It is personally pleasing to see examples of direct investigation of the ability of the horse to respond to subtle human posture and gesture, which for many of us has represented just annoying possible confounders of earlier cognition studies. Behaviorists trained in perception and learning will no doubt contribute enormously to this exciting area of investigation. |
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McDonnell, S.M. |
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IESM 2008 |
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Invited speaker IESM 2008 |
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yes |
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Equine Behaviour @ team @ |
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4460 |
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Nagy, K.; Bodó, G.; Bárdos, G.; Harnos, A. |
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Is modified Forssell"s operation superior to cribbing collar in preventing crib-biting in horses? |
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2008 |
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IESM 2008 |
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stereotypic behaviour, heart-rate variability, stress, equine welfare |
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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. |
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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 |
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Nagy, K. |
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IESM 2008 |
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Talk 15 min IESM 2008 |
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yes |
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Equine Behaviour @ team @ |
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4492 |
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Author |
Proops, L.; McComb, K.; Reby, D. |
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Title |
Cross-modal individual vocal recognition in the domestic horse |
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2008 |
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IESM 2008 |
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social cognition, animal-human interaction, horses, attention |
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Horses fulfill many of the criteria for a species in which it would be adaptive to be capable of individual recognition: they are highly social, form strong and long lasting bonds, their affiliations are rarely kin based, they have a fission-fusion social structure and they possess inter and intra-group dominance hierarchies.
We used a novel cross-modal, expectancy violation paradigm to provide the first systematic evidence that a non-human animal – the domestic horse- is capable of cross modal recognition. We believe this paradigm could provide an ideal way to study individual recognition across a wide range of species.
For full published details see: Proops L, McComb K, Reby D (2009) Cross-modal individual recognition in domestic horses (Equus caballus). Proc Natl Acad Sci U S A 106: 947-951. |
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Centre for Mammal Vocal Communication Research, Psychology department, |
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Proops, L |
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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 |
4469 |
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