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Author |
Heird, J.C.; Lokey, C.E.; Cogan, D.C. |
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Title |
Repeatability and comparison of two maze tests to measure learning ability in horses |
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Journal Article |
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Year |
1986 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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Volume |
16 |
Issue |
2 |
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103-119 |
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Abstract |
Sixteen Quarter Horses were randomly divided into two groups after sorting by age and sex. After a 10-day preconditioning period, each animal was scored for emotionality and trainability. Each group then completed a series of learning tasks in a modified T-maze for 20 consecutive days. Group P/D was initially tested on a simple place-learning task, while Group D/P was trained in a visual discrimination task. The groups were tested alternately on the two tasks with 10-day extinction periods between each task. Upon reaching a criterion of 11 of 12 correct responses (the last 8 responses consecutive), a horse was retired for the day. If this criterion was not attained, the horse completed 20 trials. Learning occurred at a faster rate on the discrimination tasks compared to the gradual learning curves observed on place tasks. Animals learned more rapidly and reached higher levels of performance as the series of tasks progressed. Trainability and emotionality scores tended to predict the final level of learning achieved. Correlations of performance ranks within emotionality and training groups were higher between tasks of the same type than between the different tasks. Rank correlations between odd and even days on each task indicated that the within-group rankings were more consistent on the discrimination task than on the place task. |
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refbase @ user @ |
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838 |
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Author |
Thouless, C.R.; Guinness, F.E. |
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Title |
Conflict between red deer hinds: the winner always wins |
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Journal Article |
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Year |
1986 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
34 |
Issue |
4 |
Pages |
1166-1171 |
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Abstract |
Dominance relations between free-living, female red deer (hinds) (Cervus elaphus L.) on the Isle of Rhum, Scotland, were investigated. Most interactions were won by the older hind of the pair and this was the case even when both individuals had reached full body size. The younger hind was more likely to be the winner if the conflict was escalated or if the two hinds were strangers, in which case escalation was more frequent than usual. When outside their normal home range, older hinds were much more likely to lose, and younger ones more likely to win, than usual. These results can be best explained by the hinds using previous experience as a cue for conventional resolution of conflict, with the result that dominance relationships established early in life are perpetuated. No such cue is available if the hinds have not previously met. |
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refbase @ user @ |
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868 |
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Author |
Berg Wa, |
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Title |
Effective population size estimates and breeding in feral horses: A preliminary assessment |
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Journal Article |
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Year |
1986 |
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Abbreviated Journal |
J Equine Vet. Sc. |
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6 |
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240-245 |
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from Professor Hans Klingels Equine Reference List |
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933 |
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Author |
Boyles Js, |
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Title |
Managing America's wild horses and burros |
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1986 |
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J Equine Vet. Sc. |
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6 |
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261 |
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from Professor Hans Klingels Equine Reference List |
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no |
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972 |
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Author |
Schusdziarra, H., Schusdziarra, V. |
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Title |
Reitergespräche – Der Weg zum unabhängigen Sitz |
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1986 |
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56 |
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3-489-63532-9 |
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Reiten Lesen Denken @ eberhardhuebener @ |
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1011 |
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Author |
Fao, |
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Title |
The Przewalski horse and restoration to its natural habitat in Mongolia. JO FAO Animal Production and Health Paper |
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Journal Article |
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Year |
1986 |
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Animal Production and Health Paper |
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61 |
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from Prof. Hans Klingels Equine Reference List |
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no |
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1078 |
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Author |
Godfrey Eb, L.P. |
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Title |
Wild horsres mangement: An economic perspective |
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Journal Article |
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Year |
1986 |
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J Equine Vet Sc |
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6 |
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Pages |
266-273 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1117 |
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Author |
Jones We, |
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Title |
Genetic recreation of wild horses |
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Journal Article |
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Year |
1986 |
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Abbreviated Journal |
J. Equine Vet Sc |
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6 |
Issue |
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Pages |
246-249 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1221 |
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Author |
Keiper Rr, |
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Title |
The Przewalski horse ecosystem: programs and progress |
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1986 |
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Majumdaret al : Endangered and threatened species programs in Pensylvania and other States |
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from Professor Hans Klingels Equine Reference List |
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no |
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1254 |
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Author |
Kirkpatrick Jf, |
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Title |
Feral horses: The basic problems |
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1986 |
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J Equine Vet Sc |
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6 |
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222 |
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from Professor Hans Klingels Equine Reference List |
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1266 |
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