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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 (up) 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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ISSN 0007-1188 ISBN Medium
Area Expedition Conference
Notes PMID:907872 Approved no
Call Number refbase @ user @ Serial 111
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Author Alexander, R, MCN et al
Title Fast locomotion of some african ungulates Type Journal Article
Year (up) 1977 Publication Journal of Zoology Abbreviated Journal J Zool
Volume 183 Issue 3 Pages 291-300
Keywords
Abstract ABSTRACT

Ten species of ungulate were filmed, galloping in their natural habitat. They ranged in size from Thomson's gazelle (about 20 kg) to giraffe (about 1000 kg). They were pursued to make them run as fast as possible. The films have been analysed to determine speed, stride frequency, stride and step lengths, and duty factors. The dependence of these quantities on body size is discussed.



Summary:

Fast locomotion of zebra, giraffe, warthog and seven species of Bovidae has been studied. The animals were filmed from a pursuing vehicle while galloping in their natural habitat.

Stride frequency was more closely correlated with limb length (represented by hip height) than with body mass. Mean stride frequency was proportional to (hip height)-0·51 and maximum stride frequency to (hip height) -0·63.

Maximum speed was between 10 and 14 m s -1 for all species except buffalo (7 m s -1). It was not significantly correlated with body mass.

Since the small species ran at least as fast as the large ones they attained higher Froude numbers. Relative stride length was approximately 1·8 (Froude number)0·39 for all species, irrespective of size. Relative step length was approximately 0·65 (Froude number)0·2, both for the fore feet and for the hind ones. The vertical forces exerted by the feet are proportional to (body weight)×(Froude number)0·2 so the forces at maximum speed are larger multiples of body weight for small species than for large ones.
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Notes from Prof. Hans Klingels Equine Reference List Approved no
Call Number refbase @ user @ Serial 130
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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 (up) 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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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0022-0795 ISBN Medium
Area Expedition Conference
Notes PMID:845536 Approved no
Call Number refbase @ user @ Serial 148
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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 (up) 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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Language English Summary Language Original Title
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ISSN 0044-3573 ISBN Medium
Area Expedition Conference
Notes PMID:412345 Approved no
Call Number refbase @ user @ Serial 213
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Author Anderson , M.C.; Shettleworth, S.J.
Title Behavioral adaptation to fixed-interval and fixed-time food delivery in golden hamsters Type Journal Article
Year (up) 1977 Publication Journal of the Experimental Analysis of Behavior (JEAB) Abbreviated Journal J Exp Anal Behav
Volume 27 Issue 1 Pages 33-49
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Abstract Food-deprived golden hamsters in a large enclosure received food every 30 sec contingent on lever pressing, or free while their behavior was continuously recorded in terms of an exhaustive classification of motor patterns. As with other species in other situations, behavior became organized into two main classes. One (terminal behaviors) increased in probability throughout interfood intervals; the other (interim behaviors) peaked earlier in interfood intervals. Which class an activity belonged to was independent of whether food was contingent on lever pressing. When food was omitted on some of the intervals (thwarting), the terminal activities began sooner in the next interval, and different interim activities changed in different ways. The interim activities did not appear to be schedule-induced in the usual sense. Rather, the hamsters left the area of the feeder when food was not due and engaged in activities they would normally perform in the experimental environment.
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Language English Summary Language Original Title
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ISSN 0022-5002 ISBN Medium
Area Expedition Conference
Notes PMID:16811980 Approved no
Call Number refbase @ user @ Serial 388
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Author Berger, J.
Title Organizational systems and dominance in feral horses in the Grand Canyon Type Journal Article
Year (up) 1977 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.
Volume 2 Issue 2 Pages 131-146
Keywords
Abstract 1. Several aspects of the behavioral ecology of feral horses (Equus caballus) were studied in Grand Canyon, Arizona, USA. Most bands contained three to five horses that included one stallion and his harem. Males that did not obtain a harem remained solitary. Throughout the study bands remained stable in composition.

2. Home ranges for all bands decreased in size in successive warm months, probably due to increased ambient temperature and drought. This resulted in greater utilization of spring areas that led to increased interband confrontation and agonistic display.

3. Territoriality was not observed in individual horses or bands, but bands hierarchial in both inter- and intraband structures. Interband stallion dominance was reinforced through posturing and fighting. Intraband hierarchies, as determined by dominance coefficients, were independent of individual size in three of four bands.

4. Indexes of nervousness (NER), calculated while horses were drinking, showed that stallions were less nervous than mares. A low NER was correlated with individuals leading toward drinking areas, whereas a high NER existed in individuals initiating flight although no single horse acted consistently as a leader.

5. Diurnal activity patterns were correlated with ambient temperatures.
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Notes Approved no
Call Number refbase @ user @ Serial 748
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Author Knill, L.M.; Eagleton, R.D.; Harver, E.
Title Physical optics of the equine eye Type Journal Article
Year (up) 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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ISSN 00029645 (Issn) ISBN Medium
Area Expedition Conference
Notes Cited By (since 1996): 1; Export Date: 15 May 2007; Source: Scopus; Language of Original Document: English; Correspondence Address: Knill, L.M. Approved no
Call Number refbase @ user @ Serial 852
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Author Bard Jbl,
Title A unity underlying the different zebra stripping patterns Type Journal Article
Year (up) 1977 Publication Abbreviated Journal J Zool Lond
Volume 183 Issue Pages 527-539
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 923
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Author Bouman Jg,
Title The future of Przewalski horses Type Journal Article
Year (up) 1977 Publication Abbreviated Journal Int Zoo Yearbook
Volume 17 Issue Pages 62-68
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 953
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Author Fagen Rm, G.T.
Title Play behavior and exercise in young ponies Type Journal Article
Year (up) 1977 Publication Abbreviated Journal Behav Ecol Sociobiol
Volume 2 Issue Pages 267-269
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Notes from Professor Hans Klingels Equine Reference List Approved no
Call Number Serial 1077
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