| Records |
| Author |
Kolter, L.; Zimmermann, W. |
| Title |
Social behaviour of Przewalski horses (Equus p. przewalskii) in the Cologne Zoo and its consequences for management and housing |
Type |
Journal Article |
| Year |
1988 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
21 |
Issue |
1-2 |
Pages |
117-145 |
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| Abstract |
Between 1977 and 1986, two actual rank changes and two unsuccessful attempts occurred among the mares of the Cologne herd. The stallion was at first a low-ranking individual, but attained a dominant position during the last 3 years. At this time he started to split his group and thus to affect attachment relationships among his mares. During his absence of half a year, new bonds resulted and disappeared again some months after his return. Foals were tolerated by the sire for a long time. His behaviour to young, sub-adult mares varied with the individual. Protection of sub-adult mares by adult mares against the stallion's attacks may occur. Young mares protect and guard strange foals from their very first day. Management steps to cope with social and feeding problems consisted of enlargement and adding complexity to the enclosure, the establishment of more feeding sites, building a stable and temporary removal of the stallion. |
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Equine Behaviour @ team @ |
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2332 |
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| Author |
KOTERBA AM et al, |
| Title |
Brathing strategy of the adult horse at rest |
Type |
Journal Article |
| Year |
1988 |
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J Appl Physiol |
| Volume |
64 |
Issue |
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Pages |
337-346 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1327 |
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| Author |
Penzhorn Bl, |
| Title |
Equus zebra |
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Journal Article |
| Year |
1988 |
Publication |
Mammalian Species |
Abbreviated Journal |
Mammalian Species |
| Volume |
314 |
Issue |
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1-7 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1460 |
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| Author |
Penzhorn, B. L.; van der Merwe, N. J. |
| Title |
Testis size and onset of spermatogenesis in Cape mountain zebras (Equus zebra zebra) |
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Journal Article |
| Year |
1988 |
Publication |
Journal of Reproduction and Fertility |
Abbreviated Journal |
J Reprod Fert |
| Volume |
83 |
Issue |
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Pages |
371-375 |
| Keywords |
mountain zebra; testis size; spermatogenesis |
| Abstract |
Testis mass of adult Cape mountain zebra stallions (mean 70·0 g) was appreciably less than that of other zebra species and domestic horses. The histological appearance of the testes of 11-, 24- and 29-month-old colts was typically prepubertal. Spermatogenic activity of a 4-year-old stallion obtained at the end of summer was at a very low level, while a 4·5-year-old stallion obtained 6 weeks after the winter solstice showed a marked increase in spermatogenesis compared with the 4-year-old. Stallions 6·5-19 years of age collected in different seasons all showed active spermatogenesis. |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1463 |
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| Author |
Ryder, O.A. |
| Title |
Przewalski's horse – putting the wild horse back in the wild |
Type |
Journal Article |
| Year |
1988 |
Publication |
Oryx |
Abbreviated Journal |
Oryx |
| Volume |
22 |
Issue |
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Pages |
154-157 |
| Keywords |
Equidae genetics. |
| Abstract |
The Asian wild horse, or Przewalski's horse (Equus przewalskii), is believed to currently survive only in captivity. There are more than 660 individuals in over 70 zoological collections, and animals are available for reintroduction. The Przewalski's horse had been bred in captivity for 12 generations, and inbreeding has occurred. Genetic variability has been lost, and released animals will require acclimatization on or near release sites. In China, a program is under way for acclimatization, breeding, and release of wild horses, and plans are being made for a similar program in Mongolia. (LCA) |
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from Professor Hans Klingels Equine Reference List |
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yes |
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Serial |
1537 |
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| Author |
Ryder, O.A.; Massena, R. |
| Title |
A case of male infanticide in Equus przewalskii |
Type |
Journal Article |
| Year |
1988 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
21 |
Issue |
1-2 |
Pages |
187-190 |
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Following the introduction of a new stallion to a band of E. przewalskii mares two births, both of male foals, resulted in foal death due to injuries sustained in the first day of life. Neither foal was sired by the new herd stallion. The second foal death was the results of an observed attack on the newborn male and is described here. Subsequently births in the same enclosure and, in one instance, to the same mare whose previous foal was killed, were of foals sired by the new stallion and were uneventful, with 3 male foals surviving to date. |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
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Serial |
1539 |
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| Author |
Schilder, M.B.H. |
| Title |
Dominance relationships between adult Plains zebra stallions in semi – captivity |
Type |
Journal Article |
| Year |
1988 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
104 |
Issue |
3-4 |
Pages |
300-319 |
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The relationships between 4-5 adult zebra stallions, living in a safari park, were investigated over a period of 5 years. Asymmetries in the distributions of a number of behaviours could be explained by adopting dominance as an intervening variable. Dominance in stallions was of a bipolar nature with on the one hand behaviours representing subordinance and defence, and on the other hand behaviours reinforcing and confirming dominance. Expression of formal dominance seems to play a minor role. The dyadic relationships of stallions differed as to the number of behaviours reflecting dominance relationships. Although often linear rank-orders could be constructed, these rank-orders were not necessarily identical. This means that the concept of dominance is of only limited value for describing relationships between zebra stallions. |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1564 |
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| Author |
Smielowski, J. |
| Title |
Breeding of the Grevy's Zebra at Polish zoological gardens |
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Journal Article |
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1988 |
Publication |
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Abbreviated Journal |
Przeglad Zool |
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32 |
Issue |
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Pages |
595-597 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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Serial |
1608 |
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| Author |
Smuts, M.M.S.; Penzhorn, B. L. |
| Title |
Descriptions of antomical differences between skulls and mandibles of Equus zebra and E. burchelli from southern Africa |
Type |
Journal Article |
| Year |
1988 |
Publication |
South African Journal of Zoology |
Abbreviated Journal |
South African Journal of Zoology |
| Volume |
23 |
Issue |
(4)3 |
Pages |
328-336 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1617 |
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| Author |
Thackeray, J.F. |
| Title |
Zebras from wonderwerk cave, northern Cape province, South Africa: attempts to distinguish Equus burchelli and E. quagga |
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Journal Article |
| Year |
1988 |
Publication |
South African journal of science |
Abbreviated Journal |
Suid- Afrikaanse Tydsskrif vir Wetenskap |
| Volume |
84 |
Issue |
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Pages |
99-101 |
| Keywords |
Cape Province; Teeth; Statistical analysis; Equidae; Hippomorpha; South Africa; Southern Africa; Perissodactyla; Mammalia; Vertebrata |
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0038-2353 |
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from Professor Hans Klingels Equine Reference List |
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yes |
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Serial |
1644 |
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