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Author |
Schuhmann K, |
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Title |
Untersuchung zur Sozialstruktur des persischen Wildesels |
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Manuscript |
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Year |
1993 |
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Doctoral thesis |
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Place of Publication |
Freiburg |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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Serial |
1578 |
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Author |
Shah Nv, |
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Title |
Ecology of wild ass in Little Rann of Kutch |
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Manuscript |
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Year |
1993 |
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Doctoral thesis |
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Place of Publication |
Baroda University, India. |
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Notes |
from Professor Hans Klingels Equine Reference List |
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yes |
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Serial |
1587 |
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Author |
Goldschmidt, T.; Bakker, T.C.M.; Feuth-de Bruijn, E. |
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Title |
Selective copying in mate choice of female sticklebacks |
Type |
Journal Article |
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Year |
1993 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
45 |
Issue |
3 |
Pages |
541-547 |
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Abstract |
There is evidence that female three-spined sticklebacks, Gasterosteus aculeatus L., prefer to mate with males whose nests contain eggs rather than with males with empty nests. While there is consensus on this point, a dispute exists about whether this preference should be attributed to a direct effect of the eggs on the female's entering the nest or, alternatively, to a positive impact of the eggs on the courtship behaviour and breeding coloration of the male. In the field experiment reported here females strongly preferred nests with eggs over empty nests. Additionally, females were less likely to enter risky nests with eggs: nests that contained fewer eggs than one average clutch or more eggs than the average nest content of parental males in this population. However, in the field possible differences in male attractiveness were not controlled for. In supplementary laboratory experiments the effect on female choice of possible changes in male attractiveness (intensified courtship and coloration) as a result of the presence of eggs in the nest was tested. Other differences in male attractiveness as a result of differences in male quality (body size, breeding coloration before the test, territory quality and size) were controlled for. When females had no access to the nests, they showed no preference for males with eggs in their nests in simultaneous choice tests. These results, together with the earlier published data, make it likely that the preference of females for nests with eggs is partly a direct consequence of the eggs themselves. So female sticklebacks are influenced by the mate choice behaviour of other females, but remain selective as to the actual nest content. |
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1818 |
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Author |
Luescher, U.A. |
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Title |
More on self-mutilative behavior in horses |
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Journal Article |
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Year |
1993 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
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Volume |
203 |
Issue |
9 |
Pages |
1252-1253 |
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Keywords |
Animals; Female; Horses/*psychology; Male; *Self Mutilation |
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0003-1488 |
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Notes |
PMID:8253611 |
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no |
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refbase @ user @ |
Serial |
1942 |
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Author |
McDonnell, S.M. |
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Title |
More on self-mutilative behavior in horses |
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Journal Article |
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Year |
1993 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
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Volume |
202 |
Issue |
10 |
Pages |
1545-1546 |
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Keywords |
Animals; Female; Horses/*injuries/psychology; Male; *Self Mutilation |
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0003-1488 |
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Notes |
PMID:8514553 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1943 |
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Author |
McClure, S.R.; Chaffin, M.K. |
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Title |
Self-mutilative behavior in horses |
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Journal Article |
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Year |
1993 |
Publication |
Journal of the American Veterinary Medical Association |
Abbreviated Journal |
J Am Vet Med Assoc |
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Volume |
202 |
Issue |
2 |
Pages |
179-180 |
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Keywords |
Animals; *Behavior, Animal; *Horse Diseases; Horses; Male; *Self Mutilation |
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0003-1488 |
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Notes |
PMID:8428817 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1944 |
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Author |
Ratzlaff, M.H.; Wilson, P.D.; Hyde, M.L.; Balch, O.K.; Grant, B.D. |
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Title |
Relationship between locomotor forces, hoof position and joint motion during the support phase of the stride of galloping horses |
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Journal Article |
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Year |
1993 |
Publication |
Acta Anatomica |
Abbreviated Journal |
Acta Anat (Basel) |
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Volume |
146 |
Issue |
2-3 |
Pages |
200-204 |
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Keywords |
Animals; Equipment Design; Hoof and Claw/*physiology; Horses/*physiology; Joints/*physiology; *Locomotion; Motor Activity/*physiology; Physiology/instrumentation; *Posture; Shoes; Transducers |
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Abstract |
Three methods were used simultaneously to determine the relationships between the vertical forces exerted on the hooves and the positions of the limbs and hooves at the times of peak vertical forces from 2 horses galloping on a track straightaway. Vertical forces were recorded from an instrumented shoe, fetlock joint motion was measured with an electrogoniometer and the angles of the carpus, fetlock and hoof were determined from slow-motion films. At hoof contact, the mean angles of the carpus and fetlock were 181-182 degrees and 199-206 degrees, respectively. Peak vertical forces on the heel occurred at or near maximum extension of the carpal and fetlock joints. Peak forces on the toe occurred during flexion of the fetlock joint and at mean hoof angles of 28-31 degrees from the horizontal. The mean angles of the hoof from the horizontal at the time of heel contact were 6-7 degrees. Hoof lift occurred at mean carpal angles of 173-174 degrees and mean fetlock angles of 199-200 degrees. |
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Address |
Department of Veterinary and Comparative Anatomy, Pharmacology and Physiology, College of Veterinary Medicine, Washington State University, Pullman 99164-6520 |
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ISSN |
0001-5180 |
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Notes |
PMID:8470468 |
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no |
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Call Number |
refbase @ user @ |
Serial |
1945 |
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Author |
Colahan, P.; Lindsey, E.; Nunier, C. |
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Title |
Determination of the center of pressure of the hoofs of the forelimbs of horses standing on a flat level surface |
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Journal Article |
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Year |
1993 |
Publication |
Acta Anatomica |
Abbreviated Journal |
Acta Anat (Basel) |
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Volume |
146 |
Issue |
2-3 |
Pages |
175-178 |
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Keywords |
Animals; Forelimb/*physiology; Hoof and Claw/*physiology; Horses/*physiology; *Posture; Pressure |
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Abstract |
The pressure exerted on a flat level surface by recently trimmed, unshod hoofs of the front limbs of 23 sound, adult horses was measured using pressure-sensitive film and a specially built cassette. The horses were tranquilized and stood with one foot on the 2.9-cm-thick cassette and the other on a block of equal height. The hoofs were observed for motion during the measurement, and the developed film was examined for improper alignment of the film or slipping of the hoof. The center of pressure was located using the method of weighted proportions of Barrey. This static measurement system with a long measurement time and the number of measurements reduced the influence of variables inherent in the horses' behavior and the measuring system. The calculated point was recorded as falling medial to, lateral to or on a line bisecting the central sulcus of the frog. In the dorsal to palmar orientation the point was classified with reference to a line drawn halfway between the most dorsal and the most palmar mark on the film. Forty-six percent of the calculated centers of pressure were located in the medial heel area. Binomial analysis for large samples indicates that this was a significant variation from a random distribution. Seventy-six percent of the centers were located in or on the borders of the medial heel. |
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Address |
College of Veterinary Medicine, University of Florida, Gainesville 32608-0136 |
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0001-5180 |
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Notes |
PMID:8470462 |
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no |
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refbase @ user @ |
Serial |
1946 |
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Author |
Feh, C.; de Mazières, J. |
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Title |
Grooming at a preferred site reduces heart rate in horses |
Type |
Journal Article |
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Year |
1993 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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Volume |
46 |
Issue |
6 |
Pages |
1191-1194 |
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Abstract |
Abstract. It is commonly suggested that the principal function of allogrooming is to reduce social tension between group members, but direct evidence of the physiological consequences of grooming at particular sites is lacking. By filming allogrooming sequences in a herd of Camargue horses, Equus caballus , their preferred grooming site, which lies on the lower neck, was identified. Experimental imitation of grooming at this site reduced the heart rate of the recipient while grooming on a non-preferred area did not, in both adults and foals. This preferred site lies close to a major ganglion of the autonomic nervous system. |
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2020 |
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Author |
Escos, J.; Alados, C.L.; Boza, J. |
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Title |
Leadership in a domestic goat herd |
Type |
Journal Article |
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Year |
1993 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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Volume |
38 |
Issue |
1 |
Pages |
41-47 |
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Keywords |
Leadership; Goat |
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Abstract |
This study reports on leadership behavior in a domestic goat group (370 animals) moving from night-time areas to grazing areas. Of the adult females which occupied leadership positons, all of them were born in the study area. Also, they were individuals with more relatives alive in the group (according to matrilineal kinship) than the rest, but they did not show special physical characteristics. |
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2032 |
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