| Records |
| Author |
Byrne, R.W.; Whiten, A.; Henzi, S.P. |
| Title |
Social relationships of mountain baboons: Leadership and affiliation in a non-female-bonded monkey |
Type |
Journal Article |
Year  |
1990 |
Publication |
American journal of primatology |
Abbreviated Journal |
Am. J. Primatol. |
| Volume |
20 |
Issue |
4 |
Pages |
313-329 |
| Keywords |
relationships; one-male groups; female-bonding; spacing; support; Papio ursinus; Papio hamadryas |
| Abstract |
Abstract 10.1002/ajp.1350200409.abs Instead of close and differentiated relationships among adult females, the accepted norm for savanna baboons, groups of Drakensberg mountain baboons (Papio ursinus) showed strong affiliation of females towards a single male. The same male was usually the decision-making animal in controlling group movements. Lactating or pregnant females focused their grooming on this “leader” male, producing a radially patterned sociogram, as in the desert baboon (P. hamadryas); the leader male supported young animals in the group against aggression and protected them against external threats. Unlike typical savanna baboons, these mountain baboons rarely displayed approach-retreat or triadic interactions, and entirely lacked coalitions among adult females. Both groups studied were reproductively one-male; male-female relationships in one were like those in a unit of a hamadryas male at his peak, while the other group resembled the unit of an old hamadryas male, who still leads the group, with a male follower starting to build up a new unit and already monopolizing mating. In their mountain environment, where the low population density suggests conditions as harsh for baboons as in deserts, adults in these groups kept unusually large distances apart during ranging; kin tended to range apart, and spacing of adults was greatest at the end of the dry, winter season. These facts support the hypothesis that sparse food is responsible for convergence with hamadryas social organization. It is suggested that all baboons, though matrilocal, are better categorized as “cross-sex-bonded” than “female bonded”. |
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Wiley Subscription Services, Inc., A Wiley Company |
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Edition |
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| ISSN |
1098-2345 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
5309 |
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| Author |
Houpt, K.A.; Northrup, N.; Wheatley, T.; Houpt, T.R. |
| Title |
Thirst and salt appetite in horses treated with furosemide |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of applied physiology (Bethesda, Md. : 1985) |
Abbreviated Journal |
J Appl Physiol |
| Volume |
71 |
Issue |
6 |
Pages |
2380-2386 |
| Keywords |
Animals; Appetite/*drug effects; Blood Volume; Diuresis; Drinking/drug effects; Female; Furosemide/*pharmacology; Horses; Natriuresis; Sodium, Dietary/*administration & dosage; Thirst/*drug effects |
| Abstract |
When a preliminary experiment in sodium-replete ponies revealed an increase, but not a significant increase, in salt consumption after furosemide treatment, the experiment was repeated using sodium-deficient horses in which aldosterone levels might be expected to be elevated to test the hypothesis that a background of aldosterone is necessary for salt appetite. Ten Standardbred mares were injected intravenously with furosemide or an equivalent volume of 0.9% sodium chloride as a control to test the effect of furosemide on their salt appetite and blood constituents. Sodium intake and sodium loss in urine, as well as water intake and urine output, were measured and compared to determine accuracy of compensation for natriuresis and diuresis. Plasma protein and packed cell volume showed significant increases in response to furosemide treatment (F = 29.31, P less than 0.001 and F = 11.20, P less than 0.001, respectively). There were no significant changes in plasma sodium concentration or osmolality in response to the treatment (P greater than 0.05). The furosemide-treated horses consumed 126 +/- 14.8 g salt, significantly more than when they were given the control injection (94.5 +/- 9.8 g; t = 2.22, P = 0.05). In response to furosemide, horses lost 962 +/- 79.7 and consumed 2,170 +/- 5 meq sodium; however, compared with control, they lost 955 meq more sodium and ingested only 570 meq more sodium, so they were undercompensating for natriuresis. The furosemide-treated horses drank 9.6 +/- 0.8 kg of water, significantly more than when they received the control injection (6.4 +/- 0.8 kg; t = 6.9, P less than 0.001).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Address |
Department of Physiology, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853-6401 |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
8750-7587 |
ISBN |
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Expedition |
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| Notes |
PMID:1778936 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
38 |
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| Author |
Schwarzenberger, F.; Mostl, E.; Bamberg, E.; Pammer, J.; Schmehlik, O. |
| Title |
Concentrations of progestagens and oestrogens in the faeces of pregnant Lipizzan, trotter and thoroughbred mares |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of reproduction and fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
| Volume |
44 |
Issue |
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Pages |
489-499 |
| Keywords |
Animals; Estrogens/*analysis; Feces/*chemistry; Female; Gestational Age; Horses/*metabolism; Immunoenzyme Techniques; Labor, Obstetric; Pregnancy; Pregnancy, Animal/*metabolism; Pregnenes/analysis; Progestins/*analysis |
| Abstract |
Faecal samples were collected at weekly intervals from pregnant Lipizzan mares during Weeks 7-16 following mating and from Lipizzan, Trotter and Thoroughbred mares during the last 3 months of gestation. After parturition, samples were taken daily from the Thoroughbred mares for another 6 days. Non-pregnant mares served as controls. The concentrations of unconjugated oestrogens (Eg), 20 alpha-OH-progestagens (20 alpha-G) and 20 beta-OH-progestagens (20 beta-G) were measured by enzyme immunoassay. In the faeces of Lipizzan mares, immunoreactive progestagens were significantly (P less than 0.01) elevated above the levels in non-pregnant mares by Week 11, and Eg by Week 13 of pregnancy onwards. During the last 3 months of gestation, concentrations of Eg were significantly higher in Trotter mares than in Lipizzan and Thoroughbred mares. Concentrations of 20 alpha-G and 20 beta-G increased to maximal values in the last month of gestation. There was no significant difference among the 3 breeds with respect to 20 alpha-G but, during the 10 weeks before parturition, concentrations of 20 beta-G in the Lipizzan mares were significantly lower (P less than 0.05) than those in the Thoroughbred mares. They were also significantly lower than those of the Trotter mares during the last 4 weeks of gestation. After parturition, the concentrations of Eg and progestagens had declined to baseline values by Days 3 and 4 respectively. From these results we conclude that high concentrations of progestagens with 20 alpha- and 20 beta-hydroxyl groups are present in the faeces of pregnant mares, especially during the last month of gestation. |
| Address |
Institut fur Biochemie, Veterinary Medical University, Vienna, Austria |
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| Language |
English |
Summary Language |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0449-3087 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:1795293 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
322 |
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| Author |
Deutsch, J.; Lee, P. |
| Title |
Dominance and feeding competition in captive rhesus monkeys |
Type |
Journal Article |
| Year |
1991 |
Publication |
International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
| Volume |
12 |
Issue |
6 |
Pages |
615-628 |
| Keywords |
female dominance – feeding competition – nutrition – stress |
| Abstract |
The feeding behavior of 16 adult female rhesus monkeys living in three captive social groups was observed. Estimates of relative food intake, feeding rate, and location of feeding in relation to food sources were compared between females of different dominance ranks. Higher-ranking females had greater access to feeding sites and were supplanted or threatened less frequently while feeding than subordinates. However, no consistent differences in estimates of total intake were found between females of high and females of low rank. The effects of dominance on feeding behavior were most pronounced in the group receiving the least food relative to estimates of overall group nutritional requirements. Higher-ranking females, both over the long term and during the study period, tended to produce more surviving offspring. The effects of dominance on reproductive performance appeared to be less related to food intake than to competitive and aggressive interactions, potentially resulting in higher levels of stress for subordinates. |
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Series Title |
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Approved |
no |
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refbase @ user @ |
Serial |
813 |
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| Author |
Dougherty, D.M.; Lewis, P. |
| Title |
Stimulus generalization, discrimination learning, and peak shift in horses |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of the experimental analysis of behavior |
Abbreviated Journal |
J Exp Anal Behav |
| Volume |
56 |
Issue |
1 |
Pages |
97-104 |
| Keywords |
Animals; *Appetitive Behavior; Attention; *Conditioning, Operant; *Discrimination Learning; Female; *Generalization, Stimulus; Horses/*psychology; Male; *Pattern Recognition, Visual; Size Perception |
| Abstract |
Using horses, we investigated three aspects of the stimulus control of lever-pressing behavior: stimulus generalization, discrimination learning, and peak shift. Nine solid black circles, ranging in size from 0.5 in. to 4.5 in. (1.3 cm to 11.4 cm) served as stimuli. Each horse was shaped, using successive approximations, to press a rat lever with its lip in the presence of a positive stimulus, the 2.5-in. (6.4-cm) circle. Shaping proceeded quickly and was comparable to that of other laboratory organisms. After responding was maintained on a variable-interval 30-s schedule, stimulus generalization gradients were collected from 2 horses prior to discrimination training. During discrimination training, grain followed lever presses in the presence of a positive stimulus (a 2.5-in circle) and never followed lever presses in the presence of a negative stimulus (a 1.5-in. [3.8-cm] circle). Three horses met a criterion of zero responses to the negative stimulus in fewer than 15 sessions. Horses given stimulus generalization testing prior to discrimination training produced symmetrical gradients; horses given discrimination training prior to generalization testing produced asymmetrical gradients. The peak of these gradients shifted away from the negative stimulus. These results are consistent with discrimination, stimulus generalization, and peak-shift phenomena observed in other organisms. |
| Address |
Department of Psychology, Ohio University, Athens 45701 |
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Place of Publication |
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English |
Summary Language |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0022-5002 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:1940765 |
Approved |
no |
| Call Number |
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Serial |
1764 |
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| Author |
Krzak, W.E.; Gonyou, H.W.; Lawrence, L.M. |
| Title |
Wood chewing by stabled horses: diurnal pattern and effects of exercise |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
69 |
Issue |
3 |
Pages |
1053-1058 |
| Keywords |
Animal Feed; Animals; *Behavior, Animal; *Circadian Rhythm; Female; Horses/*physiology; Male; *Mastication; *Physical Conditioning, Animal; Sodium Chloride/administration & dosage; Videotape Recording; Wood |
| Abstract |
Nine yearling horses, stabled in individual stalls, were used in a trial to determine the diurnal pattern of wood chewing and the effects of exercise on this behavior. The trial was a Latin square design conducted over three 2-wk periods during which each horse was exposed to each of the three following treatments: 1) no exercise (NE), 2) exercise after the morning feeding (AM), and 3) exercise in the afternoon (PM). Horses were fed a complete pelleted feed in the morning and both pelleted feed and long-stemmed hay in the afternoon. Exercise consisted of 45 min on a mechanical walker followed by 45 min in a paddock with bare soil. Each stall was equipped with two untreated spruce boards during each period for wood chewing. Wood chewing was evaluated by videotaping each horse for 22 h during each period, determining the weight and volume of the boards before and after each period, and by visual appraisal of the boards. Intake of trace mineralized salt was also measured. Wood chewing occurred primarily between 2200 and 1200. All measures of wood chewing were correlated when totals for the entire 6 wk were analyzed. When analysis was performed on 2-wk values, videotape results were not correlated with volume or weight loss of boards. Horses chewed more when on the NE treatment (511 s/d) than when on AM or PM (57 and 136 s/d, respectively; P less than .05). Salt intake tended to be greater for NE than for the other treatments (P less than .10).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Address |
Dept. of Anim. Sci., University of Illinois, Urbana 61801 |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0021-8812 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:2061237 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
1949 |
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| Author |
Gill, J. |
| Title |
A new method for continuous recording of motor activity in horses |
Type |
Journal Article |
| Year |
1991 |
Publication |
Comparative Biochemistry and Physiology. A, Comparative Physiology |
Abbreviated Journal |
Comp Biochem Physiol A |
| Volume |
99 |
Issue |
3 |
Pages |
333-341 |
| Keywords |
Animals; Circadian Rhythm; Female; Horses/*physiology; Monitoring, Physiologic/instrumentation/*veterinary; *Motor Activity; Signal Processing, Computer-Assisted |
| Abstract |
1. The use of an electronic recorder for the horse motor activity was described. 2. Examples of different types of motor activities are given in Figs 1-8. 3. The ultradian pattern of activity in all records was stressed. 4. The possibility of receiving of more physiological informations by this type of apparatus is discussed. |
| Address |
Department of Vertebrate Animal Physiology, University of Warsaw, Poland |
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Place of Publication |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0300-9629 |
ISBN |
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Medium |
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| Notes |
PMID:1678331 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
1950 |
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| Author |
Lucas, Z.; Raeside, J.I.; Betteridge, K.J. |
| Title |
Non-invasive assessment of the incidences of pregnancy and pregnancy loss in the feral horses of Sable Island |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
| Volume |
44 |
Issue |
|
Pages |
479-488 |
| Keywords |
Abortion, Veterinary/*epidemiology; Animals; Animals, Wild/*physiology; Atlantic Islands; Estrogens/analysis; Feces/chemistry; Female; Fertilization; Gestational Age; Horse Diseases/*epidemiology; Horses; Incidence; Pregnancy; *Pregnancy, Animal |
| Abstract |
Field observations of 400 totally unmanaged feral horses on Sable Island, Nova Scotia, were complemented by oestrogen determinations in faecal samples from 154 identified females over a 4-year period (454 mare-years). Of mares that were sampled throughout the year and subsequently produced foals, 92.1% exhibited elevated faecal oestrogens between 15 October and 30 March. The results confirm that faecal oestrogens are a useful indicator of pregnancy after approximately 120 days gestation. Distribution of foaling resembled that seen in other feral populations, with 95% of births occurring from April through July. The foaling rate for mares aged 3 years or older was 62.0%, with 50.7% of mares foaling in 3 or 4 years. Foaling rates were low (4.1%) in mares bred as yearlings and rose with age to 70.8% in those bred as 4-year-olds. Fetal loss after Day 120 was deduced from faecal oestrogens to be 26.0% overall, with marked variation from year to year (9.6-37.3%) and with age (70.0% in those bred as yearlings, decreasing to 5.6% in those bred as 4-year-olds). Of 58 mares aged 2 years or older that were sampled every year, about half (49.6%) the barren years were attributable to fetal loss after 120 days gestation. All mares conceived in at least 2 of the 4 years, suggesting that pregnancy loss, even after Day 120, is as important as failure to conceive in causing barren years. |
| Address |
Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Canada |
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English |
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Abbreviated Series Title |
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Edition |
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0449-3087 |
ISBN |
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| Notes |
PMID:1795292 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2247 |
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| Author |
Pepperberg, I.M.; Brezinsky, M.V. |
| Title |
Acquisition of a relative class concept by an African gray parrot (Psittacus erithacus): discriminations based on relative size |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J Comp Psychol |
| Volume |
105 |
Issue |
3 |
Pages |
286-294 |
| Keywords |
Animals; Aptitude; *Concept Formation; *Discrimination Learning; Form Perception; Male; Mental Recall; *Parrots; *Size Perception; Vocalization, Animal |
| Abstract |
We report that an African gray parrot (Psittacus erithacus), Alex, responds to stimuli on a relative basis. Previous laboratory studies with artificial stimuli (such as pure tones) suggest that birds make relational responses as a secondary strategy, only after they have acquired information about the absolute values of the stimuli. Alex, however, after learning to respond to a small set of exemplars on the basis of relative size, transferred this behavior to novel situations that did not provide specific information about the absolute values of the stimuli. He responded to vocal questions about which was the larger or smaller exemplar by vocally labeling its color or material, and he responded “none” if the exemplars did not differ in size. His overall accuracy was 78.7%. |
| Address |
Northwestern University |
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Thesis |
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Place of Publication |
Washington, D.C. : 1983 |
Editor |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0735-7036 |
ISBN |
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| Notes |
PMID:1935007 |
Approved |
yes |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3610 |
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| Author |
Jablonska, E.M.; Ziolkowska, S.M.; Gill, J.; Szykula, R.; Faff, J. |
| Title |
Changes in some haematological and metabolic indices in young horses during the first year of jump-training |
Type |
Journal Article |
| Year |
1991 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
| Volume |
23 |
Issue |
4 |
Pages |
309-311 |
| Keywords |
Alanine Transaminase/blood; Animals; Bicarbonates/blood; Blood Glucose/analysis; Blood Proteins/analysis; Breeding; Carbon Dioxide/blood; Exercise Test/veterinary; Fatty Acids, Nonesterified/blood; Female; Fructose-Bisphosphate Aldolase/blood; Hematocrit/veterinary; Hemoglobins/analysis; Horses/*blood/metabolism; Hydrogen-Ion Concentration; Lactates/blood; Male; Oxygen/blood; *Physical Conditioning, Animal; Pyruvates/blood |
| Abstract |
Effects of an 18 min exercise test, on three separate occasions during a one year jump-training programme, was studied in seven horses. Determinations were carried out on venous blood for packed cell volume, haemoglobin, total protein, lactate and pyruvate, glucose, free fatty acids, insulin, glucagon, blood gases, bicarbonate, pH, aldolase, aspartate aminotransferase and alanine amino-transferase. Exercise caused a slight increase in lactate and pyruvate, total protein, aldolase, alanine aminotransferase, pO2, bicarbonate and pH. Glucose, free fatty acids and pCO2 levels decreased. Training caused no significant difference in these changes. However, during the year, increases in lactate and decreases in pH (resting levels) were observed. |
| Address |
Department of Vertebrate Animal Physiology, Warszawa, Poland |
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English |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0425-1644 |
ISBN |
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Medium |
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| Notes |
PMID:1915234 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
3801 |
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