| Records |
| Author |
Pacheco, M.A.; Herrera, E.A. |
| Title |
Social Structure of Feral Horses in the Llanos of Venezuela |
Type |
Journal Article |
| Year |
1977 |
Publication |
Journal of Mammalogy |
Abbreviated Journal |
J Mammal |
Volume  |
78 |
Issue |
1 |
Pages |
15-22 |
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| Abstract |
Feral horses (Equus caballus) in the Venezuelan savannas (Ilanos) formed bands of 3-35 individuals; mean group size varied between 15 and 21. Some bands had up to three adult males, and there was a positive correlation between the number of males and the number of females in bands. Adult males also were seen solitary or formed bachelor groups. One association of three females was observed for 3 months. We noted a correlation between number of females in bands and number of foals per female born during our study (January-July 1992). The advantages of being in larger groups were unclear, because natural predators were rare. Perhaps females in larger groups have more time available for foraging due to reduced individual vigilance or that larger groups live in better-quality home ranges. |
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Equine Behaviour @ team @ |
Serial |
2318 |
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| Author |
Wilson, M.T.; Ranson, R.J.; Masiakowski, P.; Czarnecka, E.; Brunori, M. |
| Title |
A kinetic study of the pH-dependent properties of the ferric undecapeptide of cytochrome c (microperoxidase) |
Type |
Journal Article |
| Year |
1977 |
Publication |
European Journal of Biochemistry / FEBS |
Abbreviated Journal |
Eur J Biochem |
| Volume |
77 |
Issue |
1 |
Pages |
193-199 |
| Keywords |
Animals; Cyanides; *Cytochrome c Group/metabolism; Ferric Compounds; Horses; Hydrogen-Ion Concentration; Imidazoles; Kinetics; Mathematics; Myocardium/enzymology; *Oligopeptides/metabolism; *Peptide Fragments/metabolism; Protein Binding; Spectrophotometry; Temperature |
| Abstract |
The ferric form of the haem undecapeptide, derived from horse cytochrome c by peptic digestion, undergoes at least three pH-induced transitions with pK values of 3.4, 5.8 and 7.6. Temperature-jump experiments suggest that the first of these is due to the binding of a deprotonated imidazole group to the feric iron while the second and third arise from the binding of the two available amino groups present (the alpha-NH2 of valine and the epsilon-NH2 of lysine). Molecular models indicate that steric retraints on the peptide dictate that these amino groups may only coordinate to iron atoms via intermolecular bonds, thus leading to the polymerization of the peptide. Cyanide binding studies are in agreement with these conclusions and also yield a value of 3.6 X 10(6) M-1 s-1 for the intrinsic combination constant of CN- anion with the haem. A model is proposed which describes the pH-dependent properties of the ferric undecapeptide. |
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0014-2956 |
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| Notes |
PMID:20304 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3814 |
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| Author |
Kirkpatrick, J.F.; Wiesner, L.; Kenney, R.M.; Ganjam, V.K.; Turner, J.W. |
| Title |
Seasonal variation in plasma androgens and testosterone in the North American wild horse |
Type |
Journal Article |
| Year |
1977 |
Publication |
The Journal of endocrinology |
Abbreviated Journal |
J Endocrinol |
| Volume |
72 |
Issue |
2 |
Pages |
237-238 |
| Keywords |
Androgens/*blood; Animals; Horses/*blood; Male; *Seasons; Testosterone/*blood |
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English |
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0022-0795 |
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PMID:845536 |
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no |
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refbase @ user @ |
Serial |
148 |
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| Author |
Seyfarth, R.M. |
| Title |
A model of social grooming among adult female monkeys |
Type |
Journal Article |
| Year |
1977 |
Publication |
Journal of Theoretical Biology |
Abbreviated Journal |
J. Theor. Biol. |
| Volume |
65 |
Issue |
4 |
Pages |
671-698 |
| Keywords |
Animals; Behavior, Animal; Female; *Grooming; Haplorhini/*physiology; *Models, Biological; Reproduction; Social Dominance; Time Factors |
| Abstract |
Grooming networks among adult female monkeys exhibit two similar features across a number of different species. High-ranking animals receive more grooming than others, and the majority of grooming occurs between females of adjacent rank. A theoretical model which duplicates these features is presented, and the properties of the model are used to explain the possible causation and function of female grooming behaviour. The model illustrates how relatively simple principles governing the behaviour of individuals may be used to explain more complex aspects of the social structure of non-human primate groups. |
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English |
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0022-5193 |
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| Notes |
PMID:406485 |
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no |
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Equine Behaviour @ team @ |
Serial |
5259 |
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| Author |
Alexander, F. |
| Title |
The effect of diuretics on the faecal excretion of water and electrolytes in horses |
Type |
Journal Article |
| Year |
1977 |
Publication |
British journal of pharmacology |
Abbreviated Journal |
Br J Pharmacol |
| Volume |
60 |
Issue |
4 |
Pages |
589-593 |
| Keywords |
Animals; Body Water/*metabolism; Chlorides/metabolism; Electrolytes/*metabolism; Feces/*analysis; Furosemide/*pharmacology; Horses; Hydrochlorothiazide/*pharmacology; Male; Potassium/metabolism; Sodium/metabolism; Time Factors |
| Abstract |
1. The effect on plasma, urinary and faecal electrolytes of frusemide and hydrochlorthiazide was measured in ponies, mean weight 180 kg. 2. The rapid loss in urine of large quantities of sodium had only a small effect on plasma sodium concentration. 3. Faecal sodium excretion was increased substantially after the administration of frusemide. 4. Frusemide increased faecal potassium during the 48 h following administration and faecal water in the 24/48 h period. It also produced a hypopotassaemia. 5. Hydrochlorthiazide increased faecal chloride during the 24 h after administration. 6. Frusemide increased the intestinal transit time of both liquid (polyethylene glycol) and particulate (Cr2O3) markers. |
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0007-1188 |
ISBN |
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| Notes |
PMID:907872 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
111 |
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| Author |
Keiper Rr, |
| Title |
Observations on the nocturnal behavior of feral ponies |
Type |
Journal Article |
| Year |
1977 |
Publication |
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Abbreviated Journal |
Proc Pennsyl Acad Sci |
| Volume |
51 |
Issue |
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Pages |
57-58 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
no |
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Serial |
1251 |
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Kratzer, D.D.; Netherland, W.M.; Pulse, R.E.; Baker, J.P. |
| Title |
Maze Learning in Quarter Horses |
Type |
Journal Article |
| Year |
1977 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
45 |
Issue |
4 |
Pages |
896-902 |
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A two-compartment maze providing a single left- or right-side choice was used to test maze-learning ability in 37 quarter horses. Preference for left- or right-side choices varied among the horses. The taller and thinner horses tended to go left. The horses showed learning ability based on decreases in latency and decreases in errors as trials progressed in a right-side escape pattern. The rate of learning an opposite escape pattern, left-side escape, was faster but owing to the large number of errors occurring when the pattern was reversed, the level of errors did not reduce to a level comparable to that achieved in the right-side escape pattern until adverse stimuli were presented in the blind compartment. Heavier horses took longer to escape from the maze when adverse stimuli were presented. Differences in learning ability for horses fed various levels of dietary protein were not consistent. N1 - |
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no |
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Equine Behaviour @ team @ |
Serial |
3574 |
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| Author |
de Waal, F.B. |
| Title |
The organization of agonistic relations within two captive groups of Java-monkeys (Macaca fascicularis) |
Type |
Journal Article |
| Year |
1977 |
Publication |
Zeitschrift für Tierpsychologie |
Abbreviated Journal |
Z. Tierpsychol. |
| Volume |
44 |
Issue |
3 |
Pages |
225-282 |
| Keywords |
Age Factors; Aggression; Animals; Behavior, Animal/*physiology; Competitive Behavior/*physiology; Fear; Female; Haplorhini; Humans; Macaca/*physiology; Macaca fascicularis/*physiology; Male; Sex Factors; Social Behavior; Social Dominance |
| Abstract |
The paper offers a detailed quantitative descripition of the distribution of agonistic activities over the members of two groups of Java-monkeys (Macaca fascicularis). These groups lived in captivity and were well-established: i.e. they had an extensive network of genealogical relationships. The study pays special attention to agonistic interactions with three or more participants. Its main purpose is an analysis of the way dyadic agonistic relations (e.g. dominance relations) are affected by third group members and the relations among these. The paper presents data on the ontogeny of 'dependent dominance', the 'control role' of the alpha-male, and the functions of different types of alliances. |
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0044-3573 |
ISBN |
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| Notes |
PMID:412345 |
Approved |
no |
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refbase @ user @ |
Serial |
213 |
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| Author |
Klingel H, |
| Title |
Observations on Social Organization and Behaviour of African and Asiatic Wild Asses (Equus africanus and E. hemionus) |
Type |
Journal Article |
| Year |
1977 |
Publication |
Zeitschrift für Tierpsychologie |
Abbreviated Journal |
Z. Tierpsychol. |
| Volume |
44 |
Issue |
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Pages |
323-331 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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Serial |
1309 |
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| Author |
Knill, L.M.; Eagleton, R.D.; Harver, E. |
| Title |
Physical optics of the equine eye |
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Journal Article |
| Year |
1977 |
Publication |
American Journal of Veterinary Research |
Abbreviated Journal |
Am J Vet Res |
| Volume |
38 |
Issue |
6 |
Pages |
735-737 |
| Keywords |
visual system function; Ocular Physiology |
| Abstract |
The equine eye was treated as a general lens system and calculations were done to determine image position in relation to the retina for objects at a distance of infinity, 100 m, and 1 m. The retina is 19.1 mm behind the posterior surface of the lens; therefore, the image appears 14.6 mm posterior to the retina at infinity and at 100 m, and 16.3 mm at 1-m distance on a horizontal axis. The animals studied were hyperopic. It is evident that the horse must move its head or eye, or both, for optimal visual acuity. At the same time, some objects in the total field of vision are imperceptible or indistinct. |
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00029645 (Issn) |
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| Notes |
Cited By (since 1996): 1; Export Date: 15 May 2007; Source: Scopus; Language of Original Document: English; Correspondence Address: Knill, L.M. |
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refbase @ user @ |
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852 |
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