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Author |
Rau Re, |
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Title |
Zur Geschichte und Präparation der Mainzer Quaggas |
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Journal Article |
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Year |
1981 |
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Abbreviated Journal |
Mainzer Naturw Archiv |
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19 |
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221-236 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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1498 |
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Author |
TURNER JR JW et al, |
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Title |
Elimination marking behavior in feral horses |
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Journal Article |
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1981 |
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Can J Zool |
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59 |
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1561-1566 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1666 |
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Author |
Waage Jk, |
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Title |
How the zebra got its stripes – biting flies as selective agents in the evolution of zebra coloration |
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Year |
1981 |
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Abbreviated Journal |
J ent Soc S Afr |
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44 |
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351-358 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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1685 |
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Author |
Gillan DJ; Premack D; Woodruff G |
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Title |
Reasoning in the chimpanzee: I. Analogical reasoning |
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Journal Article |
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1981 |
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J. Exp. Psychol.: Anim. Behav. Process. |
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7 |
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1 |
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Equine Behaviour @ team @ |
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3063 |
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Author |
Bruns, E. |
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Title |
Estimation of the breeding value of stallions from the tournament performance of their offspring |
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Year |
1981 |
Publication |
Livestock Production Science |
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Volume |
8 |
Issue |
5 |
Pages |
465-473 |
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Abstract |
Data from horse-riding competitions recorded in Germany in 1976 and 1977 have been analysed to estimate genetic parameters for performance traits of riding horses measured in dressage, jumping competitions and trials. The performance traits analysed were logarithmic earnings per start, relative place number, and place value. The results are the following. 1. (1) Heritability and repeatability estimates for performance in dressage shows are 0.2 and 0.4 respectively. Corresponding estimates for performance in jumping competitions are 20% less. No genetic differences are found between stallions for performance in trials.2. (2) A selection index for estimating the breeding value of stallions was constructed by using the repeated performances of their offspring in dressage and jumping shows. For this purpose, performance data for at least ten progeny should be available. The correlation between the breeding values estimated from the dressage and jumping performances of the same stallions was approximately zero.3. (3) Reliable progeny-testing requires that the assumptions of mating stallions at random, selecting progeny randomly, and distributing them equally across environmental effects be fulfilled.4. (4) The genetic use of breeding values of stallions estimated from the performance of their progeny is opposed by the prolongation of the generation interval. This can be partly overcome by sampling young stallions and making use of the test results for young progeny only. |
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no |
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refbase @ user @ |
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3968 |
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Author |
Bean, P. |
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Title |
Punishment: A Philosophical and Criminological Enquiry |
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Miscellaneous |
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Year |
1981 |
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Equine Behaviour @ team @ |
Serial |
4851 |
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Author |
R. A. J. Taylor |
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Title |
The Behavioural Basis of Redistribution I. The Delta -Model Concept |
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Journal Article |
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Year |
1981 |
Publication |
The Journal of Animal Ecology |
Abbreviated Journal |
T. J. Anim. Ecol. |
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Volume |
50 |
Issue |
2 |
Pages |
573-586 |
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(1) A conceptual model is developed in which spatial behaviour is density-dependent. The behaviour is classified as congregatory or migratory according to whether it results in movement towards or away from population concentrations. (2) Spatial behaviour is shown to result from both individual and population interactions. (3) The stability properties of the model are explored and it is shown how, under particular conditions, populations obeying the model have a population density regulating mechanism. (4) The similarity between the model and the potential energy curve of physics is noted, but it is emphasized that this is a behavioural not a physical model. |
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refbase @ user @ |
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720 |
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Author |
Bannikov Ag, |
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Title |
Kulan Moskau |
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Book Whole |
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1981 |
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from Professor Hans Klingels Equine Reference List |
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no |
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921 |
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Author |
Gingerich Pd, |
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Title |
Variation, sexual dimorphism, and social structure in the early Eocene horse Hyracotherium |
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1981 |
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Paleobiol |
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443-455 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1110 |
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Author |
Kaseda Y, |
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Title |
The structure of the groups of Misaki horses in Toi Cape |
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Journal Article |
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1981 |
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Jpn. J Zootech Sci |
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52 |
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227-235 |
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from Professor Hans Klingels Equine Reference List |
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no |
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Call Number |
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1233 |
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