| Records |
| Author |
Asa, C.S.; Goldfoot, D.A.; Garcia, M.C.; Ginther, O.J. |
| Title |
Sexual behavior in ovariectomized and seasonally anovulatory pony mares (Equus caballus) |
Type |
Journal Article |
| Year |
1980 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm Behav |
Volume  |
14 |
Issue |
1 |
Pages |
46-54 |
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| Abstract |
Ten ovariectomized (OVEX) and ten intact, but seasonally anovulatory (ANOV), pony mares were observed for sexual activity with five stallions, using a “harem group” social testing paradigm (two OVEX and two ANOV mares plus one stallion per group) for 15 consecutive daily tests lasting 20 min each. All mares in both conditions showed proceptive behavior in at least one test, all mares but one were mounted, and 14 of 20 mares received ejaculations. No statistical differences were found between the two conditions for any measure of proceptivity, copulatory activity, or days in estrus. The quality of estrus was judged to be equivalent to that displayed by periovulatory mares during their initial and terminal days of estrus, but less intense than that seen near ovulation. Mares in both groups were in estrus during approximately 60-70% of the tests and only 3 of the 20 mares were sexually refractory for more than five consecutive tests. Thus, the typical 2-week phase of sexual refractoriness seen in intact diestrous mares was absent in OVEX and ANOV mares, suggesting that the ovary plays a major role in actively suppressing estrous responses during the luteal phase of the cycle. |
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0018-506x |
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| Call Number |
Equine Behaviour @ team @ |
Serial |
5361 |
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| Author |
OKUDA Y et al, |
| Title |
Grazing behavior and heart rate of young thoroughbreds in pasture |
Type |
Journal Article |
| Year |
1980 |
Publication |
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Abbreviated Journal |
Bull Equ Res Inst |
| Volume |
17 |
Issue |
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Pages |
8-20 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1432 |
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| Author |
Bunnell, B.; Perkins, M. |
| Title |
Performance correlates of social behavior and organization: Social rank and complex problem solving in crab-eating macaques (M. fascicularis) |
Type |
Journal Article |
| Year |
1980 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
21 |
Issue |
4 |
Pages |
515-523 |
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| Abstract |
Abstract Seventeen male crab-eating macaques, drawn from two captive troops, were tested on a series of complex problem solving tasks in a Wisconsin General Test Apparatus (wgta). The animals were trained on a series of 6-trial object quality learning set problems followed by a series of 10-trial object quality learning set problems. They were then given problems in which the correct stimulus object was reversed part way through the problem. After the animals reached criterion on this task, the reversal learning set was then extinguished. High ranking animals made more intraproblem errors than low ranking animals on the 6-trial problems, but there was no relationship between social status and the rapidity with which the object quality learning set was established. Animals that received overtraining on the 6-trial problems transferred their learning virtually intact to the 10-trial problems; however, high ranking animals without overtraining made more errors than low ranking animals. On reversal learning and reversal extinction, high ranking animals made more errors on critical trials, indicating that they formed and extinguished the reversal set more slowly than low ranking animals. Object quality sets, as measured by trial-2 performance, were not affected by the reversal conditions. |
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Serial |
2082 |
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| Author |
Bunnell, B.; Gore, W.; Perkins, M. |
| Title |
Performance correlates of social behavior and organization: Social rank and reversal learning in crab-eating macaques (M. fascicularis) |
Type |
Journal Article |
| Year |
1980 |
Publication |
Primates |
Abbreviated Journal |
Primates |
| Volume |
21 |
Issue |
3 |
Pages |
376-388 |
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| Abstract |
Abstract Seventeen male crab-eating macaques drawn from two captive troops, were tested on a brightness discrimination, reversal learning task. Fourteen of these animals completed ten reversals. It was found that the performance of the three highest ranking animals from each troop, taken together, was poorer than that of the lower ranking animals that were tested. The high ranking animals made more errors before reaching criterion on both initial learning and the reversal problems. Analysis of error patterns revealed that, while the high ranking animals had no more difficulty than the others in withholding their responses to the previously correct stimulus following reversals, they did not adopt the correct strategy as soon as the low ranking animals. The results have been interpreted in terms of a carry-over of a hypothetical factor or factors resulting from pressures created by the ongoing social dynamics involved in establishing and maintaining a given social rank at the time laboratory testing occurred. |
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no |
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2083 |
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| Author |
Bennett Dk, |
| Title |
Stripes do not a zebra make, Part I: A cladistic analysis of Equus |
Type |
Journal Article |
| Year |
1980 |
Publication |
Systematic Zoology |
Abbreviated Journal |
Syst Zool |
| Volume |
29 |
Issue |
2 |
Pages |
272-287 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
932 |
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| Author |
DOREAU M et al, |
| Title |
Activités alimentaires nocturnes du cheval au pâturage |
Type |
Journal Article |
| Year |
1980 |
Publication |
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Abbreviated Journal |
Ann Zootech |
| Volume |
29 |
Issue |
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Pages |
299-304 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1022 |
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| Author |
De Moraes Ferrari,E. A.; Todorov, J. C. |
| Title |
Concurrent avoidance of shocks by pigeons pecking a key |
Type |
Journal Article |
| Year |
1980 |
Publication |
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Abbreviated Journal |
J Exp Anal Behav. |
| Volume |
30 |
Issue |
3 |
Pages |
329-333 |
| Keywords |
concurrent schedules, unsignaled avoidance, negative reinforcement, key pecking, pigeon |
| Abstract |
Three pigeons were studied on concurrent, unsignaled, avoidance schedules in a two-key procedure. Shock-shock intervals were two seconds in both schedules. The response-shock interval on one key was always 22 seconds, while the response-shock interval associated with the other key was varied from 7 to 52 seconds in different experimental conditions. Response rates on the key associated with the varied schedule tended to decrease when the response-shock interval length was increased. Responding on the key associated with the constant schedule was not systematically affected. |
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no |
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Equine Behaviour @ team @ |
Serial |
3586 |
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| Author |
Salter Re, H.J. |
| Title |
Range relationships of feral horses with wild ungulates and cattle in western Alberta |
Type |
Journal Article |
| Year |
1980 |
Publication |
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Abbreviated Journal |
J Range Mgmt |
| Volume |
33 |
Issue |
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Pages |
266-271 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1552 |
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| Author |
Noë, R.; de Waal, F.B.; van Hooff, J.A. |
| Title |
Types of dominance in a chimpanzee colony |
Type |
Journal Article |
| Year |
1980 |
Publication |
Folia primatologica; international journal of primatology |
Abbreviated Journal |
Folia Primatol (Basel) |
| Volume |
34 |
Issue |
1-2 |
Pages |
90-110 |
| Keywords |
Agonistic Behavior; Animals; Animals, Zoo; *Behavior, Animal; Competitive Behavior; Factor Analysis, Statistical; Female; Hierarchy, Social; Male; *Pan troglodytes; *Social Dominance |
| Abstract |
This study examines to what extent the concept of dominance can be used to describe the social structure of a group of semi-free-living chimpanzees. 15 behavioural variables, based on agonistic, competitive and affinitive behaviour patterns, have been compared with respect to the interindividual directions in which they occurred. In this analysis use was made of indices that reflect the position an individual occupies in the relationship structure. These indices were calculated per individual for all variables and subjected to factor analysis and cluster analysis. As a result, 13 of the variables could be grouped in three categories which have been labelled: (1) agonistic dominance; (2) bluff dominance, and (3) competitive dominance. Whereas the top positions in the hierarchies based on the first two closely related types of dominance were occupied by the adult males, the hierarchy based on the third type was headed by several adult females. |
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0015-5713 |
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| Notes |
PMID:7439873 |
Approved |
no |
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refbase @ user @ |
Serial |
212 |
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| Author |
Parry, B.W.; Gay, C.C.; McCarthy, M.A. |
| Title |
Influence of head height on arterial blood pressure in standing horses |
Type |
Journal Article |
| Year |
1980 |
Publication |
American Journal of Veterinary Research |
Abbreviated Journal |
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| Volume |
41 |
Issue |
10 |
Pages |
1626-1631 |
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| Notes |
Cited By (since 1996): 4; Export Date: 21 October 2008 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
4539 |
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