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| Author | Huebener, E. | ||||
| Title | Einwirkungen des Reiters nach Zeitgeber ? Beispiel: Hilfen für Übergänge von einer Gangart in eine andere; | Type | Journal Article | ||
| Year | 2006 | Publication | Tierärztliche Umschau | Abbreviated Journal | Tierärztl. Umschau |
| Volume | 10 | Issue | Pages | 515-532 | |
| Keywords | Tiergerechte Reiter:Pferd-Kommunikation – Signale für das Ändern der Fußfolge – Einwirkungen im allein “passenden” Moment – alleiniger Timer dafür – “Sekundengehorsam” | ||||
| Abstract | Zusammenfassung Wissenschaftliches Erfassen von Grundlagen der ererbten Reitlehre hilft, deren Werte zu bewahren. Und Reiten Lehrende dürfen nicht nur das “Wie”, sie sollten auch das “Weshalb” vermitteln können. Die Grundlagen der in Jahrhunderten entstandenen klassischen europäischen Reitlehre beruhen auf der Natur abgelauschten Erkenntnissen. Sie spiegeln sich u. a. in den Hilfen für Übergänge aus einer Gangart in eine andere. Die Bewegungen von Pferderumpf und -rücken liefern den Zeitgeber für jene pferdgerechte, feinfühlige Hilfengebung, die aufmerksam, fleißig und freudig mitarbeitende Pferde schafft. |
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| Language | German | Summary Language | Original Title | ||
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| Notes | Approved | yes | |||
| Call Number | refbase @ user @ | Serial | 425 | ||
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| Author | Hemelrijk, C.K.; Wantia, J. | ||||
| Title | Individual variation by self-organisation | Type | Journal Article | ||
| Year | 2005 | Publication | Neuroscience and biobehavioral reviews | Abbreviated Journal | Neurosci Biobehav Rev |
| Volume | 29 | Issue | 1 | Pages | 125-136 |
| Keywords | Aggression; Animals; Behavior, Animal/*physiology; Competitive Behavior/*physiology; Female; Humans; *Individuality; Male; Models, Psychological; Sex Characteristics; *Social Dominance; Time Factors | ||||
| Abstract | In this paper, we show that differences in dominance and spatial centrality of individuals in a group may arise through self-organisation. Our instrument is a model, called DomWorld, that represents two traits that are often found in animals, namely grouping and competing. In this model individual differences grow under the following conditions: (1) when the intensity of aggression increases and grouping becomes denser, (2) when the degree of sexual dimorphism in fighting power increases. In this case the differences among females compared to males grow too, (3) when, upon encountering another individual, the tendency to attack is 'obligate' and not conditional, namely 'sensitive to risks'. Results resemble phenomena described for societies of primates, mice, birds and pigs. | ||||
| Address | Theoretical Biology, University of Groningen, NN Haren, The Netherlands. hemelrij@ifi.unizh.ch | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0149-7634 | ISBN | Medium | ||
| Area | Expedition |
Conference | |||
| Notes | PMID:15652260 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 443 | ||
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| Author | Acuna, B.D.; Sanes, J.N.; Donoghue, J.P. | ||||
| Title | Cognitive mechanisms of transitive inference | Type | Journal Article | ||
| Year | 2002 | Publication | Experimental brain research. Experimentelle Hirnforschung. Experimentation cerebrale | Abbreviated Journal | Exp Brain Res |
| Volume | 146 | Issue | 1 | Pages | 1-10 |
| Keywords | Adolescent; Adult; Attention/*physiology; Cognition/*physiology; Female; Humans; Learning/physiology; Linear Models; Male; Photic Stimulation; Psychomotor Performance/physiology; Reaction Time/physiology | ||||
| Abstract | We examined how the brain organizes interrelated facts during learning and how the facts are subsequently manipulated in a transitive inference (TI) paradigm (e.g., if A<B and B<C, then A<C). This task determined features such as learned facts and behavioral goals, but the learned facts could be organized in any of several ways. For example, if one learns a list by operating on paired items, the pairs may be stored individually as separate facts and reaction time (RT) should decrease with learning. Alternatively, the pairs may be stored as a single, unified list, which may yield a different RT pattern. We characterized RT patterns that occurred as participants learned, by trial and error, the predetermined order of 11 shapes. The task goal was to choose the shape occurring closer to the end of the list, and feedback about correctness was provided during this phase. RT increased even as its variance decreased during learning, suggesting that the learnt knowledge became progressively unified into a single representation, requiring more time to manipulate as participants acquired relational knowledge. After learning, non-adjacent (NA) list items were presented to examine how participants reasoned in a TI task. The task goal also required choosing from each presented pair the item occurring closer to the list end, but without feedback. Participants could solve the TI problems by applying formal logic to the previously learnt pairs of adjacent items; alternatively, they could manipulate a single, unified representation of the list. Shorter RT occurred for NA pairs having more intervening items, supporting the hypothesis that humans employ unified mental representations during TI. The response pattern does not support mental logic solutions of applying inference rules sequentially, which would predict longer RT with more intervening items. We conclude that the brain organizes information in such a way that reflects the relations among the items, even if the facts were learned in an arbitrary order, and that this representation is subsequently used to make inferences. | ||||
| Address | Department of Neuroscience, Box 1953, Brown Medical School, Providence, RI 02912, USA | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0014-4819 | ISBN | Medium | ||
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Conference | |||
| Notes | PMID:12192572 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 602 | ||
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| Author | Horowitz, A.C. | ||||
| Title | Do humans ape? Or do apes human? Imitation and intention in humans (Homo sapiens) and other animals | Type | Journal Article | ||
| Year | 2003 | Publication | Journal of comparative psychology | Abbreviated Journal | J Comp Psychol |
| Volume | 117 | Issue | 3 | Pages | 325-336 |
| Keywords | Adolescent; Adult; Animals; *Appetitive Behavior; Attention; Child, Preschool; Concept Formation; Female; Humans; *Imitative Behavior; Male; Motivation; Pan troglodytes/*psychology; *Problem Solving; *Psychomotor Performance; Reaction Time; Species Specificity | ||||
| Abstract | A. Whiten, D. M. Custance, J.-C. Gomez, P. Teixidor, and K. A. Bard (1996) tested chimpanzees' (Pan troglodytes) and human children's (Homo sapiens) skills at imitation with a 2-action test on an “artificial fruit.” Chimpanzees imitated to a restricted degree; children were more thoroughly imitative. Such results prompted some to assert that the difference in imitation indicates a difference in the subjects' understanding of the intentions of the demonstrator (M. Tomasello, 1996). In this experiment, 37 adult human subjects were tested with the artificial fruit. Far from being perfect imitators, the adults were less imitative than the children. These results cast doubt on the inference from imitative performance to an ability to understand others' intentions. The results also demonstrate how any test of imitation requires a control group and attention to the level of behavioral analysis. | ||||
| Address | Department of Cognitive Science, University of California, San Diego, CA, USA. ahorowitz@crl.ucsd.edu | ||||
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| Publisher | Place of Publication | Washington, D.C. : 1983 | Editor | ||
| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0735-7036 | ISBN | Medium | ||
| Area | Expedition |
Conference | |||
| Notes | PMID:14498809 | Approved | yes | ||
| Call Number | refbase @ user @ | Serial | 736 | ||
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| Author | van Dierendonck, M.C.; Bandi, N.; Batdorj, D.; Dugerlham, S.; Munkhtsog, B. | ||||
| Title | Behavioural observations of reintroduced Takhi or Przewalski horses (Equus ferus przewalskii) in Mongolia | Type | Journal Article | ||
| Year | 1996 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 50 | Issue | 2 | Pages | 95-114 |
| Keywords | Horse; Przewalski's horse; Reintroduction; Time budget; Social organisation; Basic reference dataset | ||||
| Abstract | During 1992 and 1993, 14 reintroduced Przewalski Horses or Takhi (Equus ferus przewalskii) were studied in the Hustain Nuruu Mountain Steppe reserve in Mongolia. Most of the individuals did not know each other before reintroduction. These Takhi were the first of five groups due to be released in the reserve after an acclimatisation period of at least 1 year. During acclimatisation the Takhi, lived visually and acoustically separately, in fenced enclosures of approximately 45 ha each. The observations, mostly scan-sampling, were carried out in each season. The observation bouts were divided over six periods and over two harem herds. Two of the periods were in the same consecutive seasons, so comparison over the years was possible. Social integration within the Takhi herds was very high from the beginning, as described by the spatial relation and synchronisation data. Between 50 and 89% of the observation time, the behaviour of all herd members was synchronised. The amount of time spent grazing by the Takhi (30-68% of the daylight period) was similar to that of feral horses and Takhi in captivity and semi-reserves. The Takhi tended to rest in the morning and have a bimodal period of grazing at dawn and in the afternoon. The Takhi displayed clear habitat preferences for certain activities. They had a strong preference to rest at the highest point in their enclosure. They fed preferably on two or three different vegetation types (with five types available in each enclosure). The amount of time spent grazing during the non-growing seasons (49 +/- 15%) indicates that the feeding value and availability of food were sufficient. Health changes were detected adequately using condition scoring sheets. No supplementary food or water was supplied during the harsh winters. Moreover, low mortality rates and high reproductive success show that the mountain steppe is a habitat which is potentially suitable for establishing a healthy Takhi population. Takhi is the first species to return to its native habitat after living only in zoos for so many generations. | ||||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 762 | ||
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| Author | Rapin, V.; Poncet, P.A.; Burger, D.; Mermod, C.; Richard, M.A. | ||||
| Title | [Measurement of the attention time in the horse] | Type | Journal Article | ||
| Year | 2007 | Publication | Schweizer Archiv fur Tierheilkunde | Abbreviated Journal | Schweiz Arch Tierheilkd |
| Volume | 149 | Issue | 2 | Pages | 77-83 |
| Keywords | Age Factors; Animals; *Attention/physiology; Conditioning, Operant; Cross-Over Studies; Female; Horses/*physiology; Learning/*physiology; Male; Memory/*physiology; Time Factors | ||||
| Abstract | A study carried out on 49 horses showed that it is possible to measure the attention time by operant conditioning. After teaching horses an instrumental task using a signal, we were then able to test their attention time by asking them to prolong it increasingly while setting success and failure criteria. Two tests were performed 3 weeks apart. The 2nd test was feasible without relearning, a proof of memory, and was repeatable, a proof of consistency in the attention time. A significant difference was observed between the 3 age groups. Young horses often performed very well during the 1st test but their attention dropped in the 2nd test while older horses were more stable with respect to attention and even increased it slightly. The study shows that there are individual differences but it was not possible to prove a significant influence of breed, gender and paternal influence. Consequently, learning appears to be one of the most interesting approaches for evaluating the attention of horses and for observing their behaviour. | ||||
| Address | Laboratoire d'Ecoethologie, Universite de Neuchatel, Suisse. veronique.rapin@unine.ch | ||||
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| Language | French | Summary Language | Original Title | Mesure de la duree d'attention chez le cheval | |
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| ISSN | 0036-7281 | ISBN | Medium | ||
| Area | Expedition |
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| Notes | PMID:17343134 | Approved | no | ||
| Call Number | Serial | 1770 | |||
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| Author | Christensen, J.W.; Rundgren, M.; Olsson, K. | ||||
| Title | Training methods for horses: habituation to a frightening stimulus | Type | Journal Article | ||
| Year | 2006 | Publication | Equine veterinary journal | Abbreviated Journal | Equine Vet J |
| Volume | 38 | Issue | 5 | Pages | 439-443 |
| Keywords | Animals; Behavior, Animal/*physiology; *Conditioning (Psychology); *Fear; Heart Rate/*physiology; Horses/physiology/*psychology; Learning; Male; Random Allocation; *Reinforcement (Psychology); Safety; Time Factors | ||||
| Abstract | REASONS FOR PERFORMING STUDY: Responses of horses in frightening situations are important for both equine and human safety. Considerable scientific interest has been shown in development of reactivity tests, but little effort has been dedicated to the development of appropriate training methods for reducing fearfulness. OBJECTIVES: To investigate which of 3 different training methods (habituation, desensitisation and counter-conditioning) was most effective in teaching horses to react calmly in a potentially frightening situation. HYPOTHESES: 1) Horses are able to generalise about the test stimulus such that, once familiar with the test stimulus in one situation, it appears less frightening and elicits a reduced response even when the stimulus intensity is increased or the stimulus is presented differently; and 2) alternative methods such as desensitisation and counter-conditioning would be more efficient than a classic habituation approach. METHODS: Twenty-seven naive 2-year-old Danish Warmblood stallions were trained according to 3 different methods, based on classical learning theory: 1) horses (n = 9) were exposed to the full stimulus (a moving, white nylon bag, 1.2 x 0.75 m) in 5 daily training sessions until they met a predefined habituation criterion (habituation); 2) horses (n = 9) were introduced gradually to the stimulus and habituated to each step before the full stimulus was applied (desensitisation); 3) horses (n = 9) were trained to associate the stimulus with a positive reward before being exposed to the full stimulus (counter-conditioning). Each horse received 5 training sessions of 3 min per day. Heart rate and behavioural responses were recorded. RESULTS: Horses trained with the desensitisation method showed fewer flight responses in total and needed fewer training sessions to learn to react calmly to test stimuli. Variations in heart rate persisted even when behavioural responses had ceased. In addition, all horses on the desensitisation method eventually habituated to the test stimulus whereas some horses on the other methods did not. CONCLUSIONS AND POTENTIAL RELEVANCE: Desensitisation appeared to be the most effective training method for horses in frightening situations. Further research is needed in order to investigate the role of positive reinforcement, such as offering food, in the training of horses. | ||||
| Address | Danish Institute of Agricultural Sciences, Department of Animal Health, Welfare and Nutrition, Tjele, Denmark | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0425-1644 | ISBN | Medium | ||
| Area | Expedition |
Conference | |||
| Notes | PMID:16986605 | Approved | no | ||
| Call Number | Serial | 1783 | |||
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| Author | Ulloa, A.; Gonzalez-Ceron, L.; Rodriguez, M.H. | ||||
| Title | Host selection and gonotrophic cycle length of Anopheles punctimacula in southern Mexico | Type | Journal Article | ||
| Year | 2006 | Publication | Journal of the American Mosquito Control Association | Abbreviated Journal | J Am Mosq Control Assoc |
| Volume | 22 | Issue | 4 | Pages | 648-653 |
| Keywords | Animals; Anopheles/*physiology; Appetitive Behavior/*physiology; Cattle; Female; Horses; Humans; Insect Vectors/*physiology; Malaria/transmission; Mexico; Oviparity/*physiology; Seasons; Time Factors; Vitellogenesis/physiology | ||||
| Abstract | The host preference, survival rates, and length of the gonotrophic cycle of Anopheles punctimacula was investigated in southern Mexico. Mosquitoes were collected in 15-day separate experiments during the rainy and dry seasons. Daily changes in the parous-nulliparous ratio were recorded and the gonotrophic cycle length was estimated by a time series analysis. Anopheles punctimacula was most abundant during the dry season and preferred animals to humans. The daily survival rate in mosquitoes collected in animal traps was 0.96 (parity rate = 0.86; gonotrophic cycle = 4 days). The length of gonotrophic cycle of 4 days was estimated on the base of a high correlation coefficient value appearing every 4 days. The minimum time estimated for developing mature eggs after blood feeding was 72 h. The proportion of mosquitoes living enough to transmit Plasmodium vivax malaria during the dry season was 0.35. | ||||
| Address | Centro de Investigacion de Paludismo, Instituto Nacional de Salud Publica, Apartado Postal 537, Tapachula, Chiapas 30700, Mexico | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 8756-971X | ISBN | Medium | ||
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| Notes | PMID:17304932 | Approved | no | ||
| Call Number | Serial | 1830 | |||
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| Author | Elhay, M.; Newbold, A.; Britton, A.; Turley, P.; Dowsett, K.; Walker, J. | ||||
| Title | Suppression of behavioural and physiological oestrus in the mare by vaccination against GnRH | Type | Journal Article | ||
| Year | 2007 | Publication | Australian Veterinary Journal | Abbreviated Journal | Aust Vet J |
| Volume | 85 | Issue | 1-2 | Pages | 39-45 |
| Keywords | Animals; Antibodies/blood; Estradiol/blood; *Estrus/drug effects/physiology; Female; Gonadotropin-Releasing Hormone/*immunology/*pharmacology; Horses/*physiology; Luteinizing Hormone/blood; Ovulation/*drug effects/physiology; Progesterone/blood; Safety; Sexual Behavior, Animal/drug effects/physiology; Time Factors; Vaccination/veterinary | ||||
| Abstract | OBJECTIVE: To examine the immunogenicity of an equine immunocontraceptive vaccine and its efficacy in controlling hormone-related behaviour. DESIGN: A total of 24 mares at two sites in Australia were vaccinated with an immunocontraceptive vaccine comprising gonadotrophin releasing hormone (GnRH) conjugated to a carrier protein in immunostimulating complex as an adjuvant. Twelve animals at each site received a placebo of adjuvant alone and served as controls for seasonal oestrus, hormonal and behaviour patterns. Animals were observed for injection site reactions, ovarian and follicular activity, and serum levels of antibody, 17beta-oestradiol and progesterone in the weeks following vaccination. Mares were also examined for oestrous behaviour by teasing with a stallion. RESULTS: All mares responded to vaccination. Two weeks following the second vaccination there was a peak in antibody response to GnRH that declined gradually over the following weeks. Commensurate with the elevated anti-GnRH antibody there was a marked effect on ovarian activity with a reduction in 17beta-oestradiol and progesterone levels in the 24 vaccinated mares. There was also a reduction of oestrus-related behaviour as determined by a teaser stallion. This effect lasted a minimum of 3 months and correlated with the initial level of antibody response. CONCLUSION: Following a conventional two-dose immunisation regime this commercially available equine immunocontraceptive vaccine was effective at inhibiting oestrous behaviour for at least 3 months. This vaccine has a high level of safety since there were no significant local reactions nor were there any adverse systemic responses to vaccination. | ||||
| Address | Veterinary Medicines Research and Development, Pfizer Animal Health, Parkville, VIC 3052. Martin.Elhay@pfizer.com | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0005-0423 | ISBN | Medium | ||
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| Notes | PMID:17300452 | Approved | no | ||
| Call Number | Serial | 1831 | |||
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| Author | Lee, J.; Paik, M. | ||||
| Title | Sex preferences and fertility in South Korea during the year of the Horse | Type | Journal Article | ||
| Year | 2006 | Publication | Demography | Abbreviated Journal | Demography |
| Volume | 43 | Issue | 2 | Pages | 269-292 |
| Keywords | Asian Continental Ancestry Group/*psychology; *Astrology; Attitude/*ethnology; Chronology; *Culture; Female; *Fertility; Humans; Korea; Male; *Mythology; Risk; *Sex Ratio; Social Desirability; Time | ||||
| Abstract | Since antiquity, people in several East Asian countries, such as China, Japan, and South Korea, have believed that a person is destined to possess specific characteristics according to the sign of the zodiac under which he or she was born. South Koreans, in particular, have traditionally considered that the year of the Horse bears inauspicious implications for the birth of daughters. Using monthly longitudinal data at the region level in South Korea between 1970 and 2003, we found that in the year of the Horse, the sex ratio at birth significantly increased while fertility decreased. | ||||
| Address | Department of Economics, Sam M. Walton College of Business, Business Building 402, University of Arkansas, Fayetteville, AR 72701-1201, USA. jlee@walton.uark.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0070-3370 | ISBN | Medium | ||
| Area | Expedition |
Conference | |||
| Notes | PMID:16889129 | Approved | no | ||
| Call Number | Serial | 1867 | |||
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