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Author |
DOREAU M et al, |
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Title  |
Activités alimentaires nocturnes du cheval au pâturage |
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1980 |
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Ann Zootech |
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29 |
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299-304 |
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from Professor Hans Klingels Equine Reference List |
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1022 |
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Author |
Lyda, R.O.; Hall, J.R.; Kirkpatrick, J.F. |
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Title |
A comparison of Freund's Complete and Freund's Modified Adjuvants used with a contraceptive vaccine in wild horses (Equus caballus) |
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2005 |
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Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians |
Abbreviated Journal |
J Zoo Wildl Med |
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36 |
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4 |
Pages |
610-616 |
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Animals; Antibody Formation; Contraception, Immunologic/*veterinary; Estrus/drug effects; Female; Freund's Adjuvant/administration & dosage/adverse effects/*immunology; Horses/immunology/*physiology; *Vaccines, Contraceptive; Zona Pellucida/*immunology |
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Fifteen captive wild mares (Equus caballus) were treated with porcine zona pellucida contraceptive vaccine and either Freund's Complete Adjuvant (n = 7) or Freund's Modified Adjuvant (n = 8). All mares received a booster inoculation of porcine zona pellucida plus Freund's Incomplete Adjuvant a month later. Anti-porcine zona pellucida antibodies were measured over 10 mo following the initial inoculation. There were no significant differences in antibody titers at any point during the 10 mo, and seven of the eight mares in the Freund's Modified Adjuvant group were above the 60% level at the end of the study, which is considered to be the contraceptive threshold for horses. There were no significant differences in titers between pregnant and nonpregnant horses, nor was there a significant correlation between age and titers. One local injection site reaction occurred after booster treatment with Freund's Incomplete Adjuvant, and 11 healthy foals were born during the course of the study. These data suggest that Freund's Modified Adjuvant is an acceptable substitute for Freund's Complete Adjuvant in certain free-ranging and captive wildlife species. |
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Science and Conservation Center, 2100 South Shiloh Road, Billings, Montana 59106, USA |
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1042-7260 |
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PMID:17312717 |
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refbase @ user @ |
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139 |
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Author |
Klimov Vv, |
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Title |
A spatial- ethological organization of the herd of Przewalski's horses in Askania – Nova |
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Year |
1985 |
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Zool J |
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64 |
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282-295 |
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from Professor Hans Klingels Equine Reference List |
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1276 |
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Author |
Bard Jbl, |
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Title |
A unity underlying the different zebra stripping patterns |
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Journal Article |
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1977 |
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J Zool Lond |
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183 |
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527-539 |
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from Professor Hans Klingels Equine Reference List |
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no |
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923 |
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Author |
Lundholm B, |
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Title |
Abstammung und Domestikation des Hauspferdes |
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Zool Bidrag Uppsala |
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27 |
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1-287 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1354 |
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Zlatanova, D.; Ahmed, A.; Valasseva, A.; Genov, P. |
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Title |
Adaptive Diet Strategy of the Wolf (Canis lupus L.) in Europe: a Review |
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Journal Article |
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2014 |
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ACTA ZOOLOGICA BULGARICA |
Abbreviated Journal |
Acta zool. bulg. |
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66 |
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4 |
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439-452 |
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Wolf, Canis lupus, prey, adaptive strategy |
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Abstract |
The diet strategy of the wolf in Europe is reviewed on the basis of 74 basic and 14 additional literature
sources. The comparative analysis reveals clear dependence on the latitude (and, therefore, on the changing
environmental conditions) correlated with the wild ungulate abundance and diversity. Following a
geographic pattern, the wolf is specialised on different species of ungulates: moose and reindeer in Scandinavia,
red deer in Central and Eastern Europe and wild boar in Southern Europe. Where this large prey
is taken, the roe deer is hunted with almost the same frequency in every region. The wolf diet in Europe
shows two ecological adaptations formed by a complex of variables: 1. Wolves living in natural habitats
with abundance of wild ungulates feed mainly on wild prey. 2. In highly anthropogenic habitats, with low
abundance of wild prey, wolves feed on livestock (where husbandry of domestic animals is available) and
take also a lot of plant food, smaller prey (hares and rodents) and garbage food. The frequency of occurrence
of wild ungulates in the diet of wolves in North Europe varies from 54.0% in Belarus to 132.7% in
Poland, while that of livestock is in the range from 0.4% in Norway to 74.9% in Belarus. In South Europe,
the frequency of occurrence of wild prey varies from 0% in Italy and Spain to 136.0% in Italy, while of domestic
ungulates ranges between 0% and 100% in Spain. The low density or lack of wild prey triggers the
switch of the wolf diet to livestock, plant food (32.2-85% in Italy) or even garbage (up to 41.5% in Italy). |
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Equine Behaviour @ team @ |
Serial |
6388 |
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Author |
VanDierendonck, M.C., de Vries, H., Schilder, M.B.H. |
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Title |
An Analysis of Dominance, Its Behavioural Parameters and Possible Determinants in a Herd of Icelandic horses in captivity |
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Journal Article |
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Year |
1995 |
Publication |
Netherlands Journal of Zoology |
Abbreviated Journal |
Netherl. J. Zool. |
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Volume |
45 |
Issue |
3-4 |
Pages |
362-385 |
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Keywords |
Dominance; rank order; horses; Icelandic horses. |
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Abstract |
Feral horses are social animals, which have to rely on survival strategies centered on the formation of cohesive social bonds within their bands. Many problems in the husbandry of social animals such as horses, are due to the fact that the limits of their adaptive abilities are exceeded. Evidence suggests that the fundamental social characteristics of domestic horses have remained relatively unchanged. The social structure, social strategies and social interactions were investigated (3 non-consecutive years, 24 hr per day for several weeks) in long term established groups of domestic horses (mares and geldings of all ages) and a few small introduced groups, kept in (semi)natural environments. The general aim was to investigate the social needs of domestic horses. The social life of domestic horses was characterised by long lasting bonds with preferred partners which were established and maintained by allogrooming, play, proximity and dominance behaviours. Bonding partners were mainly found within the same sex-age group, but adult geldings also bonded with sub-adult mares and geldings. Adult mares were clustered in a group, while the other animals formed a second group. Among the adult mares, subgroups according to reproductive state were formed. Individuals regulated their social network by interfering with interactions between other members of the herd, which in itself is complex. An intervention is a behavioural action of one animal that actively interferes with an ongoing interaction between a dyad with the apparent aim of altering that interaction. This was verified by post-hoc analyses of disturbed and undisturbed interactions. Interventions in allogrooming or play were performed significantly more often when at least one member of the initial dyad was a preferred partner of, or familiar to (within the small introduced bands) the intervener. The stronger the preferred association in allogrooming between the intervener and member(s) of the initial dyad, the higher the probability the intervener would displace one initial member and continue allogrooming with the other. Just five behaviours were extracted which reliably reflected the dominance relations among horses. Aggression with the hind quarters was used both offensively and defensively and therefore not suitable as a reliable parameter. Individual dominance relationships were related to social experience. The implications of these findings for horse husbandry were assessed. It is argued that the execution of affiliative behaviours may be rewarding in itself, and therefore always will be a highly motivated behaviour. It is shown that social positive physical interactions (allogrooming, play) with other horses is an ethological need and therefore indispensable in modern husbandry systems. Ethological needs are so important for the animal that husbandry systems that lack the possibilities to execute such behaviours will cause chronic stress. It is concluded that all horses need physical social contact, and that horses, which lack appropriate social learning experiences during ontogeny, may be hampered in their social functioning later in life. Solutions for problems, including dominance problems, in individual social housing and group housing are presented. |
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Equine Behaviour @ team @ |
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2368 |
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Author |
VanDierendonck, M.C.; de Vries, H.; Schilder, M.B.H. |
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Title |
An Analysis of Dominance, Its Behavioural Parameters and Possible Determinants in a Herd of Icelandic orses in Captivity |
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Journal Article |
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1995 |
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Netherlands Journal of Zoology |
Abbreviated Journal |
Netherl. J. Zool. |
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45 |
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3-4 |
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362-385 |
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Keywords |
Dominance; rank order; horses; Icelandic horses. |
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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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440 |
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Author |
DOBRORUKA LJ et al, |
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Title |
An analysis of the population of Grevy's zebra |
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1987 |
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Int Zoo Yb |
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26 |
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290-293 |
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from Professor Hans Klingels Equine Reference List |
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1018 |
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Author |
BENIRSCHKE K |
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An unusual zebra hybrid – the zeebraa |
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Zoondooz |
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15 |
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from Professor Hans Klingels Equine Reference List |
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931 |
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