| Records |
| Author |
Lobanov, N.V. |
Title  |
Askania-Nova, A 3rd Reservate in the USSR for the breeding of Equus hemionus kulan. |
Type |
Journal Article |
| Year |
1982 |
Publication |
Zoologichesky Zhurnal |
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| Volume |
61 |
Issue |
12 |
Pages |
1856-1861 |
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Equine Behaviour @ team @ |
Serial |
2341 |
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| Author |
Eberhardt, L.L.; Majorowicz, A. K.; Wilcox,J. A. |
| Title |
Apparent Rates of Increase for Two Feral Horse Herds |
Type |
Journal Article |
| Year |
1982 |
Publication |
The Journal of Wildlife Management |
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| Volume |
46 |
Issue |
2 |
Pages |
367-374 |
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| Abstract |
Rates of increase for 2 Oregon feral horse (Equus caballus) herds were estimated from direct aerial counts to be about 20% per year. These rates can be achieved only if survival rates are high, and reproduction exceeds that normally expected from horses. A population dynamics model suggests adult survival to be the key parameter in determining rates of increase, and there is some direct evidence of high adult survival rates. Management implications are discussed. |
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Equine Behaviour @ team @ |
Serial |
2286 |
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| Author |
Turner, J.W.J.; Kirkpatrick, J.F. |
| Title |
Androgens, behaviour and fertility control in feral stallions |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of reproduction and fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
| Volume |
32 |
Issue |
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Pages |
79-87 |
| Keywords |
Animals; Animals, Wild; Copulation/drug effects; Female; *Fertility/drug effects; Horses/*physiology; Male; Periodicity; Pregnancy; Seasons; *Sexual Behavior, Animal/drug effects; Sexual Maturation; Sperm Count; Sperm Motility/drug effects; Testosterone/*blood/pharmacology |
| Abstract |
This field study of feral stallions in Montana and Idaho examines and correlates the seasonal pattern of plasma androgens and specific sociosexual behaviour and reports the effect of a long-acting androgenic steroid on this behaviour and on fertility. Plasma testosterone was measured by competitive protein binding assay in samples obtained by jugular venepuncture from captured animals. In samples taken from 34 sexually mature stallions in 6 different months during the year, a definite seasonal pattern in testosterone was present, with a peak in May (3.04 +/- 0.63 ng/ml) and a nadir in December (1.55 +/- 0.34 ng/ml). Values were less than 2.0 ng/ml in non-breeding months and greater than 2.4 ng/ml in breeding months. Behavioural endpoints measured were (1) stallion scent marking in response to elimination by mares (elimination marking), (2) mounting and (3) copulation. The frequencies of each of these endpoints followed closely the seasonal pattern seen for plasma androgens. In the fertility study microcapsulated testosterone propionate (microTP) was administered i.m. to 10 harem stud stallions 3 months before the 1980 breeding season. In these stallions and in 10 control harem studs, the above behavioural endpoints were examined in the 1980 and 1981 breeding seasons, and foal counts were made in 1981. There were no direct inhibitory or stimulatory effects of microTP treatment on any of the behavioural endpoints in either year. In 1981 foals were produced in 87.5% of the control bands and 28.4% of the microTP-treated bands. These results indicate that microencapsulated testosterone propionate can provide effective fertility control in feral horses without causing significant alterations in sociosexual behaviour. |
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English |
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0449-3087 |
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PMID:6962905 |
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refbase @ user @ |
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138 |
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| Author |
Eisenmann V, K.A. |
| Title |
Analyses multidemensionelles de métapodes d'Equus sensu lato |
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Journal Article |
| Year |
1982 |
Publication |
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Abbreviated Journal |
Bull Mus natn Hist nat |
| Volume |
4 |
Issue |
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Pages |
75-103 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
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1062 |
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| Author |
Harrington, F.H.; Mech, L.D. |
| Title |
An analysis of howling response parameters useful for wolf pack censusing |
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Journal Article |
| Year |
1982 |
Publication |
J Wildl Manag |
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46 |
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Equine Behaviour @ team @ Harrington1982 |
Serial |
6456 |
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| Author |
Beaver Bv, |
| Title |
Aggressive bhavior associated with naturally elevated serum Testosterone in mares |
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Journal Article |
| Year |
1982 |
Publication |
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Abbreviated Journal |
Appl Anim Ethol |
| Volume |
8 |
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Pages |
425-428 |
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from Professor Hans Klingels Equine Reference List |
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no |
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925 |
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| Author |
Penzhorn Bl, |
| Title |
Age determination in the Cape Mountain Zebras in the mountain zebra natinoal park |
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Journal Article |
| Year |
1982 |
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Koedoe |
| Volume |
25 |
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89-102 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1451 |
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| Author |
Clark, B. |
| Title |
African wild ass |
Type |
Journal Article |
| Year |
1982 |
Publication |
Oryx |
Abbreviated Journal |
Oryx |
| Volume |
17 |
Issue |
1 |
Pages |
28-31 |
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The African wild ass is endangered. Its habitat is a drought-stricken war zone; its flesh is eaten and is believed to cure hepatitis; it is eagerly sought by dealers and collectors. The author, Chief Curator at Israel's Hai-Bar reserve, examines the problems hindering the conservation of this animal and explains why it is urgently necessary to list it on Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora at its meeting in April 1983. |
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Equine Behaviour @ team @ |
Serial |
2260 |
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| Author |
Ryder, O. A.; Wedemeyer, E. A. |
| Title |
A cooperative breeding programme for the mongolian wild horse Equus Przewalski in the United States |
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Journal Article |
| Year |
1982 |
Publication |
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Abbreviated Journal |
Biol. Cons. |
| Volume |
22 |
Issue |
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Pages |
259-271 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1540 |
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| Author |
Baba, M., T.; Doi, H.; Ikeda, T.; Iwamoto; Ono Y. |
| Title |
A census of large mammals in Omo National Park, Ethiopia |
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Journal Article |
| Year |
1982 |
Publication |
African Journal of Ecology |
Abbreviated Journal |
Afr. J. Ecol. |
| Volume |
20 |
Issue |
3 |
Pages |
207-210 |
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no |
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Equine Behaviour @ team @ |
Serial |
2218 |
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