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| Author | McLean, A.N. | ||||
| Title | Short-term spatial memory in the domestic horse | Type | Journal Article | ||
| Year | 2004 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 85 | Issue | 1-2 | Pages | 93-105 |
| Keywords | Animal cognition; Delayed response; Equine memory; Horse; Object permanence; Temporal cognition | ||||
| Abstract | This study investigates the ability of horses to recall a feeding event in a two-point choice apparatus. Twelve horses were individually tested whereby they were maintained immobile in a test arena and visually and aurally experienced the delivery of food into one of two feed goals. The horses were then released to make their choice in two experimental contexts: immediate release after experiencing the delivery of food, and release 10 s after food delivery. Each horse performed 40 immediate-release (IR) trials, followed by forty 10-s release trials over a 3-day period. In addition, the same horses were tested 3 months later in the spring with the same number and sequence of trials. Results were analysed by log-linear analysis of frequencies. Results showed that while horses were able to achieve the correct feed goal choice in the immediate-release trials, they were unsuccessful with the 10-s release trials. This suggests that there are limitations in recall abilities in horses, in that they may not possess a prospective type of memory. There are welfare and training implications in these findings concerning the effects of overestimating the mental abilities of horses during training and the effects of delays in reinforcements. | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 403 | ||
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| Author | Nicol, C. J. | ||||
| Title | Equine learning: progress and suggestions for future research | Type | Journal Article | ||
| Year | 2002 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 78 | Issue | 2-4 | Pages | 193-208 |
| Keywords | Learning; Horse; Equine; Discrimination; Training | ||||
| Abstract | Horses are well able to form classical and instrumental associations and so the focus of much recent research has been on the stimulus control of instrumental learning. Horses appear to discriminate using spatial cues more easily than other stimulus features, as indicated both by the speed of initial task acquisition and by the extent to which acquired discriminations can be reversed. Phenomena associated with discrimination learning in laboratory animals, including generalisation and peak shift, have been demonstrated in horses. However, the ability of horses to classify stimuli into categories is more controversial. Although there is some evidence that horses may be able to form categories based on similarities in the physical appearance of different stimuli, there is currently no evidence that they are able to develop abstract concepts. Their performance on social learning tasks has also been poor. Few correlations are observed between the learning ability of individual horses on different tasks, suggesting that it may not be possible to classify individual horses as `good' or `poor' learners. Better learning performance by horses that are naturally calm is probably due to reduced interference in the learning process. Correct handling procedures can lower reactivity levels in horses, and may facilitate learning in some circumstances. Future research on equine learning needs to take into account the complex nature of equine social interaction. Studies on the effects of stress on learning, and on social and spatial cognition, are also particularly needed. | ||||
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| Call Number | refbase @ user @ | Serial | 405 | ||
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| Author | Huebener, E. | ||||
| Title | The Rider's Impacts and Their Timers – Example: Rider's Aids for Transitions Between Different Gaits. | Type | Journal Article | ||
| Year | 2006 | Publication | Tierärztliche Umschau | Abbreviated Journal | Tierärztl. Umschau |
| Volume | 10 | Issue | Pages | 515-532 | |
| Keywords | Animal-friendly rider-horse communication – signals for changing the footfall – knee-jerk impacts in the single “fitting” moment – singular timer for those – immediate “obedience” | ||||
| Abstract | The scientific investigation of the basics of the inherited riding teachings assists in conserving its values. Riding instructors should be able to teach not only “how” but also “why”. The classic European riding teachings that have developed across the centuries are based on perceptions that have their roots in natural phenomena. They are being mirrored, for instance, in the aids to stimulate the change from one gait to the next. The movements of the horse's trunk and back provide timers for horse-friendly, sensitive aids that create attentive, diligent and happily cooperating horses. |
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| Language | German | Summary Language | Original Title | ||
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| Call Number | refbase @ user @ | Serial | 434 | ||
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| Author | Huebener, E. | ||||
| Title | How the Horse-Appropriate “Self-Acting” Leg Aid Could Be Better Communicated. | Type | Journal Article | ||
| Year | 2006 | Publication | Tierärztliche Umschau | Abbreviated Journal | Tierärztl. Umschau |
| Volume | 8 | Issue | Pages | 403 | |
| Keywords | cultured riding – horse-rider-harmony – sensitive-invisible aids – saving the backs of both horse and rider | ||||
| Abstract | From the base to the top of the sport horses are being coerced into “obedience” or the performance of exercises by force. Campaigns against the “Rollkur” or “Hyperflexion” fill the media. However the root of evil lies a lot deeper. The base of cultured riding in high harmony between horse and rider are sensitive, almost invisible aids which are being timed by the movements of the horse's back and trunk. Anchoring the knowledge of this interrelation in rider's minds has to this day been unsuccessful. | ||||
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| Language | German | Summary Language | Original Title | ||
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| Call Number | refbase @ user @ | Serial | 432 | ||
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| Author | VanDierendonck, M.C.; de Vries, H.; Schilder, M.B.H. | ||||
| Title | An Analysis of Dominance, Its Behavioural Parameters and Possible Determinants in a Herd of Icelandic orses in Captivity | Type | Journal Article | ||
| Year | 1995 | Publication | Netherlands Journal of Zoology | Abbreviated Journal | Netherl. J. Zool. |
| Volume | 45 | Issue | 3-4 | Pages | 362-385 |
| Keywords | Dominance; rank order; horses; Icelandic horses. | ||||
| Abstract | Th e applicability of the concept of dominance was investigated in a captive herd of  Icelandic horses and  ponies of diff erent breeds. Eight out of  behaviours possibly related to dominance occurred frequently enough to be investigated in detail. For these eight agonistic behaviours the coverage, the unidirectionality in the exchange, and the degree of transitivity (Landau`s linearity index) were calculated. Four off ensive behaviours, together with avoidance, were suitable for further analysis with regard to dominance. Th e patterns of asymmetries with which these behaviours were exchanged were suffi ciently similar as to justify the application of the dominance concept and to construct a (nearly) linear dominance hierarchy. Th e rank order of the castrated stallions was completely linear, the hierarchy of the mares was almost completely linear. Th e results suggest that off ensive and defensive aggressive behaviours should be treated separately and that the concept of dominance is applicable. However, ritualized formal dominance signals between adult horses appear to be (almost) absent. Th e rank positions of the individuals were correlated with age and residency in the herd but not with height. Middle ranking horses tended to be more frequently in the close vicinity of another horse than high ranking or low ranking horses. Over and above this correlation at the individual level, it was found that pairs of horses close in rank to each other were more often also spatially close to each other. Being in oestrus did not infl uence the dominance relationships between mares. For castrated stallions the rank positions were correlated with the age at which they were castrated. Th is suggests that in male horses experience prior to neutering infl uences the behaviour afterwards. |
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 440 | ||
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| Author | R. A. Hopkins | ||||
| Title | CALIFORNIA WILDLIFE HABITAT RELATIONSHIPS SYSTEM | Type | Manuscript | ||
| Year | Publication | Abbreviated Journal | |||
| Volume | M174 | Issue | Pages | ||
| Keywords | Feral Horse Equus caballus | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 476 | ||
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| Author | Kumar, P.; Timoney, J.F.; Southgate, H.H.; Sheoran, A.S. | ||||
| Title | Light and scanning electron microscopic studies of the nasal turbinates of the horse | Type | Journal Article | ||
| Year | 2000 | Publication | Anatomia, histologia, embryologia | Abbreviated Journal | Anat Histol Embryol |
| Volume | 29 | Issue | 2 | Pages | 103-109 |
| Keywords | Animals; Female; Horses/*anatomy & histology; Male; Microscopy, Electron, Scanning; Turbinates/*cytology/ultrastructure | ||||
| Abstract | The nasal turbinates of 5 young horses were studied by light and scanning electron-microscopy. Stratified cuboidal epithelium lined the rostral part of the dorsal and ventral nasal turbinates of the vestibular region. The polyangular microvillus cells of this region were separated by linear depressions. The mid and caudal parts of the dorsal and ventral nasal turbinates and the rostral part of the ethmoturbinates were lined by pseudostratified columnar ciliated respiratory epithelium. Numerous cilia with dilated blebs on the ciliated cells concealed adjacent non-ciliated supporting cells and goblet cells. The olfactory zone consisting of the olfactory vesicle and a dense network of olfactory cilia localized to the caudal part of the ethmoturbinates. The three regions were delineated from each other by transitional zones. | ||||
| Address | Gluck Equine Research Center, University of Kentucky, Lexington 40546-0099, USA | ||||
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| ISSN | 0340-2096 | ISBN | Medium | ||
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| Notes | PMID:10932387 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 505 | ||
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| Author | Seaman, S.C.; Davidson, H.P.B.; Waran, N.K. | ||||
| Title | How reliable is temperament assessment in the domestic horse (Equus caballus)? | Type | Journal Article | ||
| Year | 2002 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 78 | Issue | 2-4 | Pages | 175-191 |
| Keywords | Temperament assessment; Behavioural tests; Horses; Active and passive copers; Factor analysis | ||||
| Abstract | Differences in behavioural characteristics between individuals of the same species are often described as being due to the temperament of the individuals. These differences can have enormous implications for welfare with some individuals apparently being able to adapt to environmental challenge more easily than others. Such differences have resulted in animals often being described as either `active' copers, which try to escape from or remove an aversive stimulus, or `passive' copers, which show no outward signs of a situation being aversive, thus, appearing to be unaffected. Tests previously developed to assess the temperament of animals have been criticised for several reasons. Behaviour is often recorded and categorised using methods that are not objective and tests are generally carried out once with no consideration of whether or not behavioural responses are consistent over time. This study takes these factors into account. The behaviour of 33 horses was recorded in three types of test--an arena test, response to a person and response to an object. In order to test whether or not responses were consistent over time, the tests were repeated three times with an average of 9 days between trials. Test results were validated using responses from questionnaires completed by the farm team leader. The data were analysed using an initial principal component analysis (PCA) and factor analysis. The horses were found to behave consistently over the three trials in their responses in the arena test. The responses to the person test and the object test were similar to each other; however, these responses were not consistent over trials. The behaviour in the arena test was unable to be used to make a prediction of behaviour in the person and object tests and vice versa. The responses shown by the horses did not enable them to be categorised as either active or passive copers. Behavioural responses in the tests were not predictive of the response to a startle test (water spray), nor could they be used to predict status or response to being reintroduced to the group after testing. There was no relationship between the responses in the tests and the ratings given by the farm team leader. It was concluded that horses vary widely in their responses to artificial behavioural tests, with only the responses to an open-field arena test being consistent over time, and therefore, the only type of test which can indicate some core factor of temperament. | ||||
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| Call Number | refbase @ user @ | Serial | 520 | ||
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| Author | Murphy, J.; Sutherland, A.; Arkins, S. | ||||
| Title | Idiosyncratic motor laterality in the horse | Type | Journal Article | ||
| Year | 2005 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 91 | Issue | 3-4 | Pages | 297-310 |
| Keywords | Horse; Idiosyncratic motor behaviour; Laterality; Sidedness | ||||
| Abstract | Idiosyncratic motor behaviour was investigated during four experimental procedures in 40 horses (males = 20, females = 20) to establish if horses revealed evidence of significant right or left laterality. The experimental procedures included (1) detection of the preferred foreleg to initiate movement (walk or trot), (2) obstacle avoidance within a passageway (right or left), (3) obstacle avoidance when ridden and (4) idiosyncratic motor bias when rolling. The influence of the horses' sex on both the direction and the degree of the laterality was explored within and between experimental procedures. The findings showed that the direction, but not the degree of idiosyncratic motor preference in the horses was strongly sex-related. Male horses exhibited significantly more (t = 3.74, d.f. = 79, P < 0.001) left lateralised responses and female horses exhibited significantly more (t = -6.35, d.f. = 79, P < 0.01) right lateralised responses. There was also significant positive correlation (P < 0.05) between four of six possible inter-experimental relationships. The results suggest two discrete trends of laterality associated with the sex of the horse. The primary cause of idiosyncratic motor laterality may be genetically predetermined, influenced by environmental factors or a combination of these two and the current findings may support the development of sex-specific training schedules for the horse. Further, work in this area might assist in defining the mechanisms of brain hemisphere lateralisation and allocation of cognitive function in the horse. | ||||
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| Call Number | refbase @ user @ | Serial | 527 | ||
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| Author | Deuel, N.R.; Lawrence, L.M. | ||||
| Title | Laterality in the gallop gait of horses | Type | Journal Article | ||
| Year | 1987 | Publication | Journal of biomechanics | Abbreviated Journal | J Biomech |
| Volume | 20 | Issue | 6 | Pages | 645-649 |
| Keywords | Animals; *Functional Laterality; *Gait; Horses/*physiology; Kinesis | ||||
| Abstract | Bilateral asymmetry in gallop stride limb contact patterns of four Quarter Horse fillies was documented by high-speed cinematography. Horses were filmed with rider by two cameras simultaneously while galloping along a straightaway. Even though signaled for each gallop lead an equivalent number of times, horses frequently switched leads, selecting the left lead nearly twice as often as the right. Velocities and stride lengths were greater for the left lead than the right, but stride frequencies did not differ between leads. Velocity effects were partitioned out in limb contact data analysis to enable the determination of persistent gallop stride asymmetries. The contact duration for the trailing (right) fore limb on the left lead exceeded the contact duration for the trailing (left) fore limb on the right lead. Selecting the right fore limb as the trailing fore limb may have allowed horses to use it to withstand the greater stresses and caused them to preferentially gallop with the left fore limb leading. Laterality may have an important influence on equine gallop motion patterns and thereby influence athletic performance. | ||||
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| ISSN | 0021-9290 | ISBN | Medium | ||
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| Notes | PMID:3611140 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 528 | ||
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