| Records |
| Author |
Russell, L.A. |
| Title |
Decoding Equine Emotions |
Type |
Journal Article |
| Year |
2003 |
Publication |
Society and Animals |
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| Volume |
11 |
Issue |
3 |
Pages |
265-266 |
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| Call Number |
Equine Behaviour @ team @ |
Serial |
4383 |
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| Author |
Fazio, F.; Assenza, A.; Piccione, G.; Caola, G. |
| Title |
Periodic Monitoring of Some Physiological Parameters during Training in the Athletic Horse |
Type |
Journal Article |
| Year |
2003 |
Publication |
Veterinary Research Communications |
Abbreviated Journal |
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| Volume |
27 |
Issue |
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Pages |
595-598 |
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no |
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Equine Behaviour @ team @ |
Serial |
4384 |
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| Author |
Wilson, R.T. |
| Title |
Biodiversity of Domestic Livestock in the Republic of Yemen |
Type |
Journal Article |
| Year |
2003 |
Publication |
Tropical Animal Health and Production |
Abbreviated Journal |
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| Volume |
35 |
Issue |
1 |
Pages |
27-46 |
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Abstract This paper describes the domestic livestock of the Republic of Yemen and aspires to complement earlier sources listing or partially describing `breeds'. It attempts to cover all species and provide indications of production parameters through a literature review and via field observations made by the author in 1999. Information is provided on livestock numbers and the economic importance of animal production. Most animals are kept in sedentary mixed crop-livestock production systems; transhumant systems have the next greatest number of stock; with nomadic systems being of least and declining importance. Yemen's livestock appear to comprise at least 11 breeds of sheep, 5 breeds of goat, 2 breeds of cattle, 4 breeds of camel, 2 breeds of donkey and 1 breed of horse. There are no data on breeds of poultry but domestic fowl (where clearly considerable diversity exists) and pigeons are kept. There is little formal information on the history and relationships of most breeds. Some appear to be of ancient local origin, whereas others show affinities with those of neighbouring and other countries. None of the identified types is considered endangered, so conservation would be premature. A more formal and detailed genetic characterization, to add to the largely morphological and traditional classification, may, however, reveal such a need. |
| Abstract |
Abstract This paper describes the domestic livestock of the Republic of Yemen and aspires to complement earlier sources listing or partially describing `breeds'. It attempts to cover all species and provide indications of production parameters through a literature review and via field observations made by the author in 1999. Information is provided on livestock numbers and the economic importance of animal production. Most animals are kept in sedentary mixed crop-livestock production systems; transhumant systems have the next greatest number of stock; with nomadic systems being of least and declining importance. Yemen's livestock appear to comprise at least 11 breeds of sheep, 5 breeds of goat, 2 breeds of cattle, 4 breeds of camel, 2 breeds of donkey and 1 breed of horse. There are no data on breeds of poultry but domestic fowl (where clearly considerable diversity exists) and pigeons are kept. There is little formal information on the history and relationships of most breeds. Some appear to be of ancient local origin, whereas others show affinities with those of neighbouring and other countries. None of the identified types is considered endangered, so conservation would be premature. A more formal and detailed genetic characterization, to add to the largely morphological and traditional classification, may, however, reveal such a need. |
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Equine Behaviour @ team @ |
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4389 |
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| Author |
Fazio, E.; Ferlazzo, A. |
| Title |
Evaluation of Stress During Transport |
Type |
Journal Article |
| Year |
2003 |
Publication |
Veterinary Research Communications |
Abbreviated Journal |
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| Volume |
27 |
Issue |
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Pages |
519-524 |
| Keywords |
hormones – physiological variables – stress – transport procedures |
| Abstract |
Domestic animals are transported for a variety of reasons including breeding, biomedical purposes, slaughter and, in the case of sporting horses, for competitions, pleasure activities or ceremonial proceedings. Studies to determine the amount of stress on farm animals during transport often have highly variable results and are difficult to interpret. The reaction of animals to stressors depends on the duration and intensity of the stressors, the animal's previous experience, its physiological status and the immediate environmental restraints. Behavioural, haematological, haematochemical, physiological and neuro-hormonal (ß-endorphin, ACTH, cortisol, iodothyronines) variables are discussed on the basis of handling, loading and transport procedures of animals. |
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no |
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Equine Behaviour @ team @ |
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4391 |
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| Author |
Rüegg J. C |
| Title |
Psychosomatik, Psychotherapie und Gehirn |
Type |
Book Whole |
| Year |
2003 |
Publication |
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Schattauer Verlag |
Place of Publication |
Stuttgart |
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978-3794521500 |
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no |
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Equine Behaviour @ team @ |
Serial |
5016 |
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| Author |
Van Doorn G.S.; Hengeveld G.M.; Weissing F.J. |
| Title |
The Evolution of Social Dominance I: Two-player Models |
Type |
Journal Article |
| Year |
2003 |
Publication |
Behavior |
Abbreviated Journal |
Behavior |
| Volume |
140 |
Issue |
10 |
Pages |
1305-1332 |
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| Abstract |
A difference in dominance rank is an often-used cue to resolve conflicts between two animals without escalated fights. At the group level, adherence to a dominance convention efficiently reduces the costs associated with conflicts, but from an individual's point of view, it is difficult to explain why a low ranking individual should accept its subordinate status. This is especially true if, as suggested by several authors, dominance not necessarily reflects differences in fighting ability but rather results from arbitrary historical asymmetries. According to this idea, rank differentiation emerges from behavioural strategies, referred to as winner and loser effects, in which winners of previous conflicts are more likely to win the current conflict, whereas the losers of previous conflicts are less likely to do so. In order to investigate whether dominance, based on such winner and loser effects, can be evolutionarily stable, we analyse a game theoretical model. The model focuses on an extreme case in which there are no differences in fighting ability between individuals at all. The only asymmetries that may arise between individuals are generated by the outcome of previous conflicts. By means of numerical analysis, we find alternative evolutionarily stable strategies, which all utilize these asymmetries for conventional conflict resolution. One class of these strategies is based on winner and loser effects, thus generating evolutionarily stable dominance relations even in the absence of differences in resource holding potential. |
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no |
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Equine Behaviour @ team @ |
Serial |
5105 |
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| Author |
Van Doorn G.S.; Hengeveld G.M.; Weissing F.J. |
| Title |
The Evolution of Social Dominance II: Multi-Player Models |
Type |
Journal Article |
| Year |
2003 |
Publication |
Behavior |
Abbreviated Journal |
Behavior |
| Volume |
140 |
Issue |
10 |
Pages |
1333-1358 |
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| Abstract |
The social hierarchies observed in natural systems often show a high degree of transitivity. Transitive hierarchies do not only require rank differentiation within pairs of individuals but also a higher level ordering of relations within the group. Several authors have suggested that the formation of linear hierarchies at the group level is an emergent property of individual behavioural rules, referred to as winner and loser effects. Winner and loser effects occur if winners of previous conflicts are more likely to escalate the current conflict, whereas the losers of previous conflicts are less likely to do so. According to this idea, an individual's position in a hierarchy may not necessarily reflect its fighting ability, but may rather result from arbitrary historical asymmetries, in particular the history of victories and defeats. However, if this is the case, it is difficult to explain from an evolutionary perspective why a low ranking individual should accept its subordinate status. Here we present a game theoretical model to investigate whether winner and loser effects giving rise to transitive hierarchies can evolve and under which conditions they are evolutionarily stable. The main version of the model focuses on an extreme case in which there are no intrinsic differences in fighting ability between individuals. The only asymmetries that may arise between individuals are generated by the outcome of previous conflicts. We show that, at evolutionary equilibrium, these asymmetries can be utilized for conventional conflict resolution. Several evolutionarily stable strategies are based on winner and loser effects and these strategies give rise to transitive hierarchies. |
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no |
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Equine Behaviour @ team @ |
Serial |
5106 |
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| Author |
Camazine, S.; Deneubourg, J.L.; Franks, N.R.; Sneyd, J.; Theraula, G.; Bonabeau, E. |
| Title |
Self-Organization in Biological Systems |
Type |
Book Whole |
| Year |
2003 |
Publication |
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Princeton University Press |
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Princeton |
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978-0691116242 |
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no |
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Equine Behaviour @ team @ |
Serial |
5143 |
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| Author |
Couzin, I.D.; Krause, J. |
| Title |
Self-Organization and Collective Behavior in Vertebrates |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Advances in the Study of Behavior |
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| Volume |
32 |
Issue |
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Pages |
1-75 |
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Academic Press |
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Editor |
Peter J. B. Slater, J.S.R., Charles T. Snowdon and Timothy J. Roper |
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ISBN |
0065-3454 |
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no |
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Equine Behaviour @ team @ |
Serial |
5144 |
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| Author |
Waeber P.O.; Hemelrijk C.K. |
| Title |
Female Dominance and Social Structure in Alaotran Gentle Lemurs |
Type |
Journal Article |
| Year |
2003 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
140 |
Issue |
10 |
Pages |
1235-1246 |
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| Abstract |
Abstract:
Lemur social systems have the striking social feature, that adult females consistently evoke submissive behaviour of adult males. In the Alaotran gentle lemur, Hapalemur griseus alaotrensis, however, female dominance has not been studied yet. Here we confirm female dominance over males on the basis of a 5-month field study of the social behaviour of four groups, in the Lake Alaotra marshland of eastern Madagascar. Further, we found that dominant individuals initiated aggressive interactions significantly more often than lowerranking ones, they initiated group movements more often and higher-ranking individuals were groomed more often. The spatial configuration was remarkable, since individuals were closer in space to those more distant in rank. |
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Equine Behaviour @ team @ |
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5148 |
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