Records |
Author |
Klingel H, |
Title |
Die soziale Organisation freilebender Equiden |
Type |
Journal Article |
Year |
1980 |
Publication |
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Abbreviated Journal |
Equus |
Volume |
2/1 |
Issue |
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Pages |
128-131 |
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Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
Call Number |
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Serial |
1314 |
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Author |
CREGIER SE |
Title |
Alleviating road transit stress on horses. |
Type |
Journal Article |
Year |
1980 |
Publication |
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Abbreviated Journal |
Anim Regul Stud |
Volume |
3 |
Issue |
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Pages |
223-227 |
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Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
Call Number |
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Serial |
996 |
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Author |
Niekerk Van Hp, |
Title |
Ethological studies within the man |
Type |
Journal Article |
Year |
1980 |
Publication |
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Abbreviated Journal |
J South Afr Vet Assoc 51 |
Volume |
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Issue |
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Pages |
237-238 |
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Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
Call Number |
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Serial |
1418 |
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Author |
van Niekerk, H.P. |
Title |
Ethological studies within the man-horse relationship |
Type |
Journal Article |
Year |
1980 |
Publication |
Journal of the South African Veterinary Association |
Abbreviated Journal |
J S Afr Vet Assoc |
Volume |
51 |
Issue |
4 |
Pages |
237-238 |
Keywords |
Animals; Behavior, Animal; Hearing; Horses/*physiology; Humans; Smell; Taste; Touch; Vision |
Abstract |
Certain aspects of ethology and the horse's senses are discussed to bring about a better understanding between man and horse. Furthermore the behaviour of horses with respect to housing, feeding, breeding, veterinary treatment and work are considered. |
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English |
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Edition |
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ISSN |
1019-9128 |
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Notes |
PMID:7241494 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
1960 |
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Author |
Hasumi, H. |
Title |
Kinetic studies on isomerization of ferricytochrome c in alkaline and acid pH ranges by the circular dichroism stopped-flow method |
Type |
Journal Article |
Year |
1980 |
Publication |
Biochimica et Biophysica Acta |
Abbreviated Journal |
Biochim Biophys Acta |
Volume |
626 |
Issue |
2 |
Pages |
265-276 |
Keywords |
Circular Dichroism; *Cytochrome c Group; Hydrogen-Ion Concentration; Isomerism; Kinetics; Spectrophotometry |
Abstract |
The isomerization of horse-heart ferricytochrome c caused by varying pH was kinetically studied by using circular dichroism (CD) and optical absorption stopped-flow techniques. In the pH range of 7--13, the existence of the three different forms of ferricytochrome c (pH less than 10, pH 10--12, and pH greater than 12) was indicated from the statistical difference CD spectra. On the basis of analyses of the stopped-flow traces in the near-ultraviolet and Soret wavelength regions, the isomerization of ferricytochrome c from neutral form to the above three alkaline forms was interpreted as follows (1) below pH 10, the replacement of the intrinsic ligand of methionine residue by lysine residue occurs; (2) between pH 10 and 12, the uncoupling of the polypeptide chain from close proximity of the heme group occurs first, followed by the interconversion of the intrinsic ligands; and (3) above pH 12, hydroxide form of ferricytochrome c is formed, though the replacement of the intrinsic ligand by extrinsic ligands may occur via different routes from those below pH 12. The CD changes at 288 nm and in the Soret region caused by the pH-jump (down) from pH 6.0 to 1.6 were compared with the appearance of the 620-nm absorption band ascribed to the formation of the high-spin form of ferricytochrome c. Both CD and absorption changes indicated that the isomerization at pH 1.6 consisted of two processes: one proceeded within the dead-time (about 2 ms) of the stopped-flow apparatus and the other proceeded at a determinable rate with the apparatus. On the basis of these results, the isomerization of ferricytochrome c at pH 1.6 was explained as follows: (1) the transition from the low-spin form to the high-spin forms occurs within about 2 ms, the dead-time of the stopped-flow apparatus; and (2) the polypeptide chain is unfolded after the formation of the high-spin form. |
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ISSN |
0006-3002 |
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Notes |
PMID:6260152 |
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no |
Call Number |
refbase @ user @ |
Serial |
3876 |
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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 |
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no |
Call Number |
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Serial |
1552 |
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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 |
Call Number |
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Serial |
932 |
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Author |
Klingel H, |
Title |
Unpaarhufer |
Type |
Journal Article |
Year |
1980 |
Publication |
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Abbreviated Journal |
Brehms Thierleben II |
Volume |
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Issue |
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Pages |
277-285 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
Call Number |
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Serial |
1316 |
Permanent link to this record |
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Author |
Zentall, T.R.; Hogan, D.E.; Edwards, C.A.; Hearst, E. |
Title |
Oddity learning in the pigeon as a function of the number of incorrect alternatives |
Type |
Journal Article |
Year |
1980 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
Volume |
6 |
Issue |
3 |
Pages |
278-299 |
Keywords |
Animals; Choice Behavior; *Color Perception; Columbidae; *Discrimination Learning |
Abstract |
Pigeons' rate of learning a two-color oddity task increased as a function of the number of incorrect alternatives from 2 to 24 in Experiments 1, 2, and 3. In general, pigeons that were transferred from many-incorrect-alternative to two-incorrect-alternative oddity performed better than controls, but considerably below baseline (Experiments 2 and 3). In Experiment 4, pigeons showed no unconditioned tendency to peck the odd stimulus among 24 incorect alternatives, when pecks were nondifferentially reinforced, and in Experiment 5, when this procedure was preceded by oddity training, a progressive drop in odd-stimulus pecking was found. In Experiment 6, pigeons exposed to a nine-stimulus array in which the odd stimulus appeared (a) in the center or (b) separate from the array learned faster than when the odd stimulus was at the edge. This outcome suggests ththe figure-ground relation between the odd stimulus and the incorrect alternatives plays a role in the facilitation produced by increasing the number of incorrect alternatives but that poor performance on the standard, three-alternative oddity task appears to be due to center-odd trials which provide a difficult size or number discrimination. |
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0097-7403 |
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Notes |
PMID:7391753 |
Approved |
no |
Call Number |
refbase @ user @ |
Serial |
268 |
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Author |
Appleby, M.C. |
Title |
Social Rank and Food Access in Red Deer Stags |
Type |
Journal Article |
Year |
1980 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
Volume |
74 |
Issue |
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Pages |
294-309 |
Keywords |
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Abstract |
The behaviour of a free-living group of male red deer (Cervus elaphus L.) on the Isle of Rhum, Scotland, was studied throughout the year to investigate the relations between social dominance and food access. The study is based on the collection of agonistic interactions between members of the study group outside the rutting season. Analysis of these confirmed that dyadic dominance relationships summate to a very clear agonistic hierarchy, while seasonal changes in frequency and type of interactions suggested that rank in the hierarchy may affect access to food through direct feeding interference. This would constitute a selective advantage of the acquisition of high rank. A behaviour pattern in which a stag displaces a subordinate and takes over his feeding-site is proposed as a mechanism of direct feeding interference. It occurs throughout the year, but with a frequency closely related to changes in food availability and quality. The proportion of such interactions that an individual wins is related to his rank, so advantages gained from this behaviour would primarily benefit high-ranking stags. These are likely to consist of improved body condition and winter survival. The importance of high rank in obtaining access to limited food was supported by the results of a simple experiment providing a small area of fertilized grass. Most of the grazing in the area was due to the highest-ranking stag present at any time. |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4860 |
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