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Author |
Ramseyer, A.; Boissy, A.; Thierry, B.; Dumont, B. |
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Title |
Individual and social determinants of spontaneous group movements in cattle and sheep |
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Journal Article |
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2009 |
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animal |
Abbreviated Journal |
Animal |
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3 |
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09 |
Pages |
1319-1326 M3 - 10.1017/S1751731109004790 |
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Group-living animals travel together to collectively exploit the resources of their environment. This study investigates how social relationships and individual temperament traits affect movement orders in domestic cattle and sheep. We analysed spontaneous group movements occurring at pasture after a resting period in a group of 15 18-month-old Charolais heifers and a group of 19 1-year-old Romane ewe-lambs. For each species, animals had similar social experience and no kinship ties. Before that, animals were observed within the group to establish their social status (e.g. dominance and preferential relationships, and sociability), then in individual tests in order to assess their emotional traits. In both species, most individuals could initiate a group movement but some individuals were more successful than others in recruiting the rest of the group. Ewe-lambs, and to a lesser extent heifers, held preferential positions during travel. We did not find any significant correlations in either species between animal order and their position in the dominance hierarchy (heifers: P = 0.438; ewe-lambs: P = 0.574) while individuals linked by preferential bonds frequently followed each other during group movements (heifers: P < 0.001; ewe-lambs: P < 0.001). With regard to social traits, heifers with a low cohesion index, and with a lower number of partners with whom they develop frequent affinitive interactions, acted more frequently as ‘first movers’ (P = 0.040 and 0.023, respectively), as well as did ewe-lambs with a high spatial independency index (P = 0.002). Ewe-lambs with the highest cohesion indices were more frequently observed in front of the group while moving halfway between departure and arrival (P = 0.028). We did not find significant correlations between individual positions during group movements and emotional traits such as reactivity, boldness and fearfulness. We conclude that preferential bonds and individual traits related to social dependence were more influential in spontaneous group movements at pasture than were emotional traits and dominance status. |
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group movement; group order; social relationship; temperament; ungulates |
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Cambridge Journals Online |
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1751-7311 |
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Equine Behaviour @ team @ |
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5047 |
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Author |
Schwarzenberger, F.; Mostl, E.; Palme, R.; Bamberg, E. |
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Title |
Faecal steroid analysis for non-invasive monitoring of reproductive status in farm, wild and zoo animals |
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Journal Article |
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Year |
1996 |
Publication |
Animal Reproduction Science |
Abbreviated Journal |
Animal Reproduction: Research and Practice |
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42 |
Issue |
1-4 |
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515-526 |
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Faecal steroids; Non-invasive monitoring; Oestrogens; Progesterone metabolites; Reproductive hormones |
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Non-invasive faecal oestrogen and progesterone metabolite evaluations are well established approaches for monitoring reproductive function in a variety of mammalian species. The route of excretion of steroid hormone metabolites varies considerably among species, and also between steroids within the same species. Steroid concentrations in faeces exhibit a similar pattern to those in plasma, but have a lag time, which depending upon the species, can be from 12 h to more than 2 days. Faecal steroid metabolites in mammals are mainly unconjugated compounds. Faecal oestrogens consist predominantly of oestrone and/or oestradiol-17α or -17β. Therefore, specific oestrogen antibodies or antibodies against total oestrogens can be used for their determination. Progesterone is metabolised to several 5α- or 5β-reduced pregnanediones and hydroxylated pregnanes prior to its faecal excretion. Therefore, relevant antibodies for their determination show considerable cross-reactivities with several pregnane metabolites, whereas specific progesterone antibodies are less suitable. Faecal oestrogen evaluations have been used as reliable indicators of pregnancy in several ungulate and some primate species. They have also been used to determine the preovulatory period in carnivores, corpus luteum activity in New World primates, and to diagnose cryptorchidism in horses. Faecal progesterone metabolite analysis has been successfully used for monitoring corpus luteum function and pregnancy, abortion, seasonality and treatment therapies in an ever expanding list of species. |
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refbase @ user @ |
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327 |
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Author |
Houpt, K.A. |
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Title |
Review of some research areas of applied and theoretical interest in domestic animal behavior |
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Journal Article |
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Year |
1980 |
Publication |
Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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6 |
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2 |
Pages |
111-119 |
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There are numerous areas worthy of study in the field of domestic animal behavior or applied ethology. In this paper a few areas are offerred as particularly worthy of attention. These areas are worthwhile either because they have received little or no study and are of basic interest or because they have application to current problems of livestock production. The study of cat behavior falls in the former category. Neither the food and water sources, the reproductive success rate nor even the social interactions of cats in the large populations found in both rural and urban environments are known. Pigs as a species have already been the subjects of many behavior studies; nevertheless, there are still gaps in our knowledge of the underlying principles of swine behavior. The physiological basis of maternal behavior, for example, has not been studied in swine or in any domestic species. The sensory basis of udder location by the neonatal piglet deserves study also. Some aspects of olfactory and vocal communication of pigs have been studied, but only one of what may be a large number of pheromones of pigs has been chemically identified. The message conveyed by the vocal interactions between adult swine of the same sex is unknown, as is the role of facial and postural expressions in porcine communication. The two major problems of pig behavior under conditions of intensive livestock management are tail biting and reproductive failure. The application of behavioral techniques to these problems might help to attenuate those problems as well as broaden our understanding of normal pig behavior. Horse behavior has also been a relatively neglected field of study. Of particular interest is the significance of the flehmen gesture used by both mares and stallions in a variety of situations. Flehmen may be related to the function of the vomeronasal organ, but both observational and physiological studies should be performed to verify the hypothesis. |
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no |
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refbase @ user @ |
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508 |
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Author |
Houpt, K.A.; Law, K.; Martinisi, V. |
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Title |
Dominance hierarchies in domestic horses |
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Journal Article |
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Year |
1978 |
Publication |
Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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4 |
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3 |
Pages |
273-283 |
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Dominance hierarchies were studied in 11 herds of domestic horses and ponies (Equus caballus). A paired feeding test was utilized to establish the dominance--subordination relationship between each pair of animals in a herd. Aggressive actions, threats, bites, kicks and chases were also recorded. In small herds linear hierarchies were formed, but in large herds triangular relationships were observed. Aggression was correlated with dominance rank. Body weight, but not age, appear to affect rank in the equine hierarchy. Juvenile horses were more likely to share feed with each other than were adult horses and were usually subordinate to adult horses. The daughters of a dominant mare were dominant within their own herds. |
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refbase @ user @ |
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682 |
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Author |
Baer, K.L.; Potter, G.D.; Friend, T.H.; Beaver, B.V. |
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Title |
Observation effects on learning in horses |
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Journal Article |
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Year |
1983 |
Publication |
Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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11 |
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2 |
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123-129 |
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Sixteen horses, divided into 2 groups of 8, were used to study observational learning in horses. One group served as controls while the other group served as the treated group (observers). Observers were allowed to watch a correctly performed discrimination task for 5 days prior to testing their learning response using the same task. Discrimination testing was conducted on all horses daily for 14 days, with criterion set at 7 out of 8 responses correct with the last 5 consecutively correct. The maximum number of trials performed without reaching criterion was limited to 20 per day. Mean trials to criteria (MT) by group were: control, 11.25; observer, 10.70. Mean error (ME) scores were: control, 2.37; observer, 2.02. Average initial discrimination error scores were 11.13 for control and 10.38 for observers (P < 0.10). Asymptote was reached by Day 8 for both control and observer groups. Analysis of variance with repeated measures showed an extreme-day effect indicative of learning (P < 0.01), with non-significant differences in learning rate between experimental groups. Whether the initial ability of the horses to perform a discrimination learning task was enhanced by observation of other horses' performance of that task was not obvious from these data. |
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refbase @ user @ |
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726 |
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Author |
Bannikov, A.G. |
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The Asiatic Wild Ass: neglected relative of the horse |
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Journal Article |
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1971 |
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Animals |
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Animals |
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13 |
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580-585 |
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Englisch |
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756 |
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Author |
Arnold Gw, G.A. |
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Title |
Ethogram of agonistic behaviour for thoroughbred horses |
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1982 |
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Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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8 |
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1 |
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5-25 |
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Social interactions between individual horses were observed in two herds each comprising a stallion and a number of mares. In one herd, the animals were observed whilst grazing and resting; in the other, nearest neighbours were recorded when the animals were grazing, and social interactions were noted when the animals were feeding on hay.
In both herds, the horses showed marked preferences for the company of specific individuals when they were grazing. In one herd, the associations were mainly between individuals that had been associated prior to being put in the herd. In the other herd, this was not the case. A new statistic was produced for testing for specific company preference. In both herds, the stallion was dominant over all mares and never received any aggression.
The complete social hierarchy could not be determined for the herd which was observed only when grazing because social contact was restricted to that within groups or pairs that associated together. In the herd to which hay was fed, a non-linear hierarchy existed. Statistics were produced to quantify both the general level of dominance of a horse and its specific dominance or subordination to every other horse. It is suggested that these statistics, and one for quantifying the general aggressiveness of a horse, could be widely used.
A principal component analysis allowed the horses to be characterised socially according to aggressiveness, their attitude to other horses and their attractiveness to other horses. |
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from Professor Hans Klingels Equine Reference List |
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899 |
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Campitelli, S.; Carenzi, C.; Verga, M. |
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Title |
Factors which influence parturition in the mare and development of the foal |
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Journal Article |
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1982 |
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Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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9 |
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1 |
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7-14 |
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Observations are reported of 127 foals born to 127 mares. In particular, comparisons are made between the mare's tendency to foal at night, the length of gestation, the weight of the foal and the weight of the foetal membrane, the time taken by the foal to attain a standing position and the time taken by the mare to expel the foetal membrane and the age of the mare and the season.
The new facts that emerge from the results are: (a) foals from middle-aged (6–11 years) mares are heavier; (b) variations of gestation length are related to the month of conception (just a trend, not a statistically significant result); (c) time for the foal to stand is related to the foal sex (females: 56.3 minutes; males 70.6 minutes, on average), and to the time taken by the mare to expel the foetal membrane; (d) parturitions take place mainly (80%) during the hours of darkness. In spring, the percentage of night births (85%) is higher than in winter (78%). |
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from Professor Hans Klingels Equine Reference List |
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984 |
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Fao, |
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The Przewalski horse and restoration to its natural habitat in Mongolia. JO FAO Animal Production and Health Paper |
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1986 |
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Animal Production and Health Paper |
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61 |
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from Prof. Hans Klingels Equine Reference List |
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1078 |
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Rubenstein, D. I. |
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The ecology of female social behaviour in horses, zebras and asses |
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1994 |
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Animal Societies |
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Animal Societies |
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13-28 |
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Kyoto University Press |
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Jarman, P.J.;, Rositter, A. |
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4-87698-014-4 |
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yes |
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1528 |
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