| Records |
| 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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English |
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0021-8812 |
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| Notes |
PMID:7174546 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
58 |
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| Author |
Klingel, H. |
| Title |
Social organization of feral horses |
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 |
89-95 |
| Keywords |
Animals; Animals, Wild; Female; Horses/*physiology; Male; Sexual Behavior, Animal; *Social Behavior; Territoriality |
| Abstract |
The basic social unit in feral horses is the family group consisting of one stallion, one to a few unrelated mares and their foals. Surplus stallions associate in bachelor groups. Stallions are instrumental in bringing mares together in a unit which then persists even without a stallion. The similarity of social organization in populations living in a variety of different habitats indicates that feral horses have reverted to the habits of their wild ancestors, and that domestication has had no influence on this basic behavioural feature. |
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English |
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| ISSN |
0449-3087 |
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| Notes |
PMID:6962906 |
Approved |
no |
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refbase @ user @ |
Serial |
1958 |
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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 |
Type |
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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| Author |
Ohsawa, H. |
| Title |
Transfer of group members in plains zebra (Equus burchelli) in relation to social organization. |
Type |
Journal Article |
| Year |
1982 |
Publication |
African Study Monographs |
Abbreviated Journal |
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| Volume |
2 |
Issue |
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Pages |
53-71 |
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no |
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refbase @ user @ |
Serial |
3554 |
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| Author |
Dyson, H.J.; Beattie, J.K. |
| Title |
Spin state and unfolding equilibria of ferricytochrome c in acidic solutions |
Type |
Journal Article |
| Year |
1982 |
Publication |
The Journal of Biological Chemistry |
Abbreviated Journal |
J Biol Chem |
| Volume |
257 |
Issue |
5 |
Pages |
2267-2273 |
| Keywords |
Animals; *Cytochrome c Group; Electron Spin Resonance Spectroscopy; Heme; Horses; Hydrogen-Ion Concentration; Kinetics; Ligands; Myocardium; Protein Binding; Protein Conformation; Spectrophotometry; Temperature |
| Abstract |
Equilibrium, stopped flow, and temperature-jump spectrophotometry have been used to identify processes in the unfolding of ferricytochrome c in acidic aqueous solutions. A relaxation occurring in approximately 100 microseconds involves perturbation of a spin-equilibrium between two folded conformers of the protein with methionine-80 coordinated or dissociated from the heme iron. The protein unfolds more slowly, in milliseconds, with dissociation and protonation of histidine-18. These two transitions appear cooperative in equilibrium measurements at low (0.01 M) ionic strength, but are separated at higher (0.10 M) ionic strength. They are resolved under both conditions in the dynamic measurements. The spin-equilibrium description permits a unified explanation of a number of properties of ferricytochrome c in acidic aqueous solutions. |
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0021-9258 |
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| Notes |
PMID:6277891 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3807 |
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| Author |
Clutton-Brock, T.H.; Guinness, F.E.; Albon, S.D. |
| Title |
Red Deer: The Behavior and Ecology of Two Sexes |
Type |
Miscellaneous |
| Year |
1982 |
Publication |
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no |
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Equine Behaviour @ team @ |
Serial |
4886 |
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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 |
Eisenberg,N.; Beilin,H. |
| Title |
The Development of Prosocial Behavior |
Type |
Journal Article |
| Year |
1982 |
Publication |
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Academic Press |
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english |
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978-0-12-234980-5 |
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no |
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Equine Behaviour @ team @ |
Serial |
5976 |
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| Author |
Frank, H.; Frank, M.G. |
| Title |
On the effects of domestication on canine social development and behavior |
Type |
Journal Article |
| Year |
1982 |
Publication |
Appl Anim Ethol |
Abbreviated Journal |
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8 |
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Equine Behaviour @ team @ Frank1982 |
Serial |
6259 |
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| Author |
Harrington, F.H.; Mech, L.D. |
| Title |
An analysis of howling response parameters useful for wolf pack censusing |
Type |
Journal Article |
| Year |
1982 |
Publication |
J Wildl Manag |
Abbreviated Journal |
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| Volume |
46 |
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Equine Behaviour @ team @ Harrington1982 |
Serial |
6456 |
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