| Records |
| Author |
Penzhorn Bl, |
| Title |
Home range sizes of Cape Mountain Zebras in the mountain zebra national park |
Type |
Journal Article |
| Year |
1982 |
Publication |
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Abbreviated Journal  |
Koedoe |
| Volume |
25 |
Issue |
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Pages |
103-108 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
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no |
| Call Number |
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Serial |
1453 |
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| Author |
Penzhorn Bl, |
| Title |
Soil- eating by Cape Mountain Zebras in the mountain zebra nationl park |
Type |
Journal Article |
| Year |
1982 |
Publication |
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Abbreviated Journal |
Koedoe |
| Volume |
25 |
Issue |
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Pages |
83-88 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
| Call Number |
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Serial |
1454 |
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| Author |
KASEDA Y et al, |
| Title |
Sire – foal relationships between harem stallions and foals in Misaki horses |
Type |
Journal Article |
| Year |
1982 |
Publication |
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Abbreviated Journal |
Jap J Zootech Sci |
| Volume |
53 |
Issue |
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Pages |
822-830 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1241 |
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| Author |
Klimov, V.; Orlov, V.M. |
| Title |
Current status and problems of conservation of Przewalski's horse (Equus przewalskii). |
Type |
Journal Article |
| Year |
1982 |
Publication |
J. Zool., London |
Abbreviated Journal |
J. Zool., London |
| Volume |
61 |
Issue |
12 |
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Equine Behaviour @ team @ |
Serial |
2329 |
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| Author |
Churcher, C. S. |
| Title |
Oldest Ass Recovered from Olduvai Gorge, Tanzania, and the Origin of Asses |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of Paleontology |
Abbreviated Journal |
J. Paleontol. |
| Volume |
56 |
Issue |
5 |
Pages |
1124-1132 |
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| Abstract |
Abstract
An isolated right metatarsal III from an adult small monodactyl equid was recovered in situ from the middle of Bed II at Evelyn Fuchs-Hans Reck Korongo, Olduvai Gorge, Tanzania in 1963. Interosseous contacts for splint metatarsals II and IV are less evident than in any modern comparative Equus metapodials in Leiden, Holland, London, England or in the field in Africa: horses (E. caballus), zebras (E. burchellii, E. grevyi, E. quagga) and asses (E. a. asinus, E. a. africanus), of which the horses and asses were domesticates. The specimen is provisionally assigned to Equus (Asinus) asinus. The estimated height at the shoulders is less than a meter for the animal in life, comparable to a small donkey. |
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no |
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refbase @ user @ |
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105 |
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| Author |
Thor, D.H.; Holloway, W.R. |
| Title |
Social memory of the male laboratory rat |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of Comparative and Physiological Psychology |
Abbreviated Journal |
J. Comp. Physiol. Psychol. |
| Volume |
96 |
Issue |
6 |
Pages |
1000-1006 |
| Keywords |
duration of social-investigatory behavior, measure of conspecific recognition &; social memory, male rats |
| Abstract |
Used duration of social-investigatory behavior by 36 mature male Long-Evans rats as a measure of individual recognition in 5 experiments to assess social memory. In Exp I, the duration of social investigation during a 2nd exposure to the same juvenile (n[en space]=[en space]12) was directly related to the length of the interexposure interval. In Exp II, Ss were exposed to the same or different juvenile 10 min after an initial 5-min exposure to a novel juvenile; reexposure to the same juvenile elicited significantly less social investigation than an exposure to a different juvenile. Exps III and IV demonstrated that following a 5-min introductory exposure, social memory of the juvenile was relatively brief in comparison with that of mature Ss. Exp V revealed a retroactive interference effect on recently acquired memory for an individual: 12 mature Ss exposed to interpolated social experience engaged in significantly longer investigation of a juvenile than those with no interpolated social experience. The combined results suggest that (1) the rat normally engages in spontaneous learning of individual identity and (2) social memory may be a significant aspect of complex social interactions. (16 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved) |
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0021-9940 |
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no |
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Equine Behaviour @ team @ |
Serial |
5133 |
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| Author |
Houpt, K.A.; Parsons, M.S.; Hintz, H.F. |
| Title |
Learning ability of orphan foals, of normal foals and of their mothers |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of animal science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
55 |
Issue |
5 |
Pages |
1027-1032 |
| Keywords |
Age Factors; Animals; Body Weight; Dominance-Subordination; Female; Horses/*physiology; *Learning; *Maternal Deprivation; Mothers/*psychology |
| Abstract |
The maze learning ability of six pony foals that had been weaned at birth was compared to that of six foals reared normally. The foals' learning ability was also compared to their mothers' learning ability at the same task; the correct turn in a single choice point maze. The maze learning test was conducted when the foals were 6 to 8 mo old and after the mothered foals had been weaned. There was no significant difference between the ability of orphaned (weaned at birth) and mothered foals in their ability to learn to turn left (6 +/- .7 and 5.1 +/- .1 trials, respectively) or to learn the reversal, to turn right (6.7 +/- .6 and 6.2 +/- .6 trials, respectively). The orphan foals spent significantly more time in the maze in their first exposure to it than the mothered foals (184 +/- 42 vs 55 +/- 15 s. Mann Whitney U = 7, P less than .05). The mothers of the foals (n = 11) learned to turn left as rapidly as the foals (5.9 +/- .7 trials), but they were slower to learn to turn right (9.8 +/- 1.4 vs 6.4 +/- .4 trials, Mann Whitney U = 33, P less than .05), indicating that the younger horses learned more rapidly. There was no correlation between the trials to criteria of the mare and those of her foal, but there was a significant negative correlation between rank in trials to criteria and age (r = -65, P less than .05) when data from the mare and foal trials were combined. The dominance hierarchy of the mares was determined using a paired feeding test in which two horses competed for one bucket of feed. Although there was no correlation between rank in the hierarchy and maze learning ability, there was a correlation between body weight and rank in the hierarchy (r = .7, P less than .05). This may indicate either that heavier horses are likely to be dominant or that horses high in dominance gain more weight. Maternal deprivation did not appear to seriously retard learning of a simple maze by foals, although the orphans moved more slowly initially. The lack of maternal influence on learning is also reflected in the lack of correlation between the mare's learning ability and that of her foal. Young horses appear to learn more rapidly than older horses. |
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0021-8812 |
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| Notes |
PMID:7174546 |
Approved |
no |
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refbase @ user @ |
Serial |
58 |
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| Author |
Houpt, K.A.; Keiper, R. |
| Title |
The position of the stallion in the equine dominance hierarchy of feral and domestic ponies. |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci |
| Volume |
54 |
Issue |
5 |
Pages |
945-950 |
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no |
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refbase @ user @ |
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668 |
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| Author |
Tobin, T.; Combie, J.D. |
| Title |
Performance testing in horses: a review of the role of simple behavioral models in the design of performance experiments |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of Veterinary Pharmacology and Therapeutics |
Abbreviated Journal |
J Vet Pharmacol Ther |
| Volume |
5 |
Issue |
2 |
Pages |
105-118 |
| Keywords |
Analgesics, Opioid/pharmacology; Animals; Apomorphine/pharmacology; Behavior, Animal/*drug effects; Dose-Response Relationship, Drug; Fentanyl/pharmacology; Horses/*physiology; Methylphenidate/pharmacology; *Models, Biological; Motor Activity/drug effects |
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0140-7783 |
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PMID:6125601 |
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no |
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refbase @ user @ |
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1957 |
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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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0449-3087 |
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PMID:6962905 |
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no |
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refbase @ user @ |
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138 |
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