Equine and Animal Cognition Reference Database -- Query Results

	Equine and Animal Cognition Reference Database Home \| Show All \| Simple Search \| Advanced Search	Login Quick Search: Field: contains: ...
	21-30 of 56 records found matching your query:

Search & Display Options

Select All Deselect All

<< 1 2 3 4 5 6 >>

List View

Citations

Details

	Records
	Author	Schulte, N.; Klingel, H.
	Title	Herd Structure, Leadership, Dominance and Site Attachment of the Camel, Camelus Dromedarius			Type	Journal Article
	Year	1991	Publication	Behaviour	Abbreviated Journal	Behaviour
	Volume	118	Issue	1-2	Pages	103-114
	Keywords
	Abstract	Social structure and relationships in a herd of captive camels were studied in Kenya. During day and night the herd split up irrespective of kinship. Partner preferences existed only in those camels who had previously been kept in a small group separated from the herd. Dominance relationships are anonymous with four levels: a) dominant breeding bulls, b) females and bachelors, c) subadults, and d) calves. No stable leadership was observed, but individual preferences in the walking order existed when the camels left and entered the enclosure. During the night most camels showed an amazing attachment to a particular resting site; in a new boma they used corresponding sites. During moon nights activity was greatly increased.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4683
Permanent link to this record



	Author	Rilling, M.E.; Neiworth, J.J.
	Title	How animals use images			Type	Journal Article
	Year	1991	Publication	Science Progress	Abbreviated Journal	Sci Prog
	Volume	75	Issue	298 Pt 3-4	Pages	439-452
	Keywords	Animals; Association Learning; Columbidae; Concept Formation; Imagination; Mental Recall; Motion Perception; Problem Solving; Thinking; *Visual Perception
	Abstract	Animal cognition is a field within experimental psychology in which cognitive processes formerly studied exclusively with people have been demonstrated in animals. Evidence for imagery in the pigeon emerges from the experiments described here. The pigeon's task was to discriminate, by pecking the appropriate choice key, between a clock hand presented on a video screen that rotated clockwise with constant velocity from a clock hand that violated constant velocity. Imagery was defined by trials on which the line rotated from 12.00 o'clock to 3.00 o'clock, then disappeared during a delay, and reappeared at a final stop location beyond 3.00 o'clock. After acquisition of a discrimination with final stop locations at 3.00 o'clock and 6.00 o'clock, the evidence for imagery was the accurate responding of the pigeons to novel locations at 4.00 o'clock and 7.00 o'clock. Pigeons display evidence of imagery by transforming a representation of movement that includes a series of intermediate steps which accurately represent the location of a moving stimulus after it disappears.
	Address	Department of Psychology, Michigan State University, East Lansing 48824
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0036-8504	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:1842858			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2831
Permanent link to this record



	Author	Kendrick, K.M.
	Title	How the sheep's brain controls the visual recognition of animals and humans			Type	Journal Article
	Year	1991	Publication	Journal of Animal Science	Abbreviated Journal	J. Anim Sci.
	Volume	69	Issue	12	Pages	5008-5016
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2940
Permanent link to this record



	Author	Houpt, K.A.
	Title	Investigating equine ingestive, maternal, and sexual behavior in the field and in the laboratory			Type	Journal Article
	Year	1991	Publication	Journal of Animal Science	Abbreviated Journal	J. Anim Sci.
	Volume	69	Issue	10	Pages	4161-4166
	Keywords
	Abstract	Some of the techniques that may be used to study social, reproductive, and ingestive behavior in horses are described in this paper. One of the aspects of equine social behavior is the dominance hierarchy or patterns of agonistic behavior. Paired or group feeding from a single food source may be used to determine dominance hierarchies quickly. Focal animal studies of undisturbed groups of horses may also be used; this method takes longer, but may reveal affiliative as well as agonistic relationships among the horses. Reproductive behavior includes flehmen, the functional significance of which can be determined using combinations of field observations of harem groups and laboratory studies of stallions exposed to female urine or feces in the absence of the donor mare. Ingestive behavior may include food, salt, or water intake. Direct and indirect measurements of intake can be made and used to answer questions regarding the ability of horses to control their energy intake when the diet is diluted, the effect of feral equids on the ecology of an area, and the abilities of horses to compensate for dehydration and hypovolemia.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	refbase @ user @			Serial	667
Permanent link to this record



	Author	Mills, G.
	Title	Kalahari Hyenas			Type	Miscellaneous
	Year	1991	Publication		Abbreviated Journal
	Volume		Issue		Pages
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4884
Permanent link to this record



	Author	Marean, C.W.; Gifford-Gonzalez, D.
	Title	Late Quaternary extinct ungulates of East Africa and palaeoenvironmental implications			Type	Journal Article
	Year	1991	Publication	Nature	Abbreviated Journal	Nature
	Volume	350	Issue	6317	Pages	418-420
	Keywords
	Abstract	UNGULATE communities of two East African savannas, the Serengeti and Athi-Kapiti Plains, are dominated by wildebeest (Connochaetes taurinus) supplemented by zebra (Equus burchelli), topi (Damaliscus lunatus), hartebeest (Alcelaphus buselaphus), buffalo (Syncerus caffer) eland (Taurotragus oryx) and gazelles (Gazella grand and G. thomsoni)1-3. Before this research, little was known of East African large mammal communities in the Late Pleistocene and early to middle Holocene. We document an extinct impala-sized alcelaphine antelope that is numerically dominant in Late Pleistocene archaeofaunal assemblages from the Athi-Kapiti Plains. The extinct giant buffalo Pelorovis antiquus is present, and a number of arid-adapted regionally extinct species are common. The small alcelaphine is rare in northern Tanzania, but regionally extinct arid-adapted species are present in Late Pleistocene deposits. These data indicate that as recently as 12,000 years ago, the large mammal community structure of East African savannas was very different and dry grasslands and arid-adapted ungulates expanded at least as far south as northern Tanzania during the Last Glacial Maximum.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	10.1038/350418a0			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2345
Permanent link to this record



	Author	Petherick, J.C.; Waddington, D.; Duncan, I.J.H.
	Title	Learning to gain access to a foraging and dustbathing substrate by domestic fowl: is `out of sight out of mind'?			Type	Journal Article
	Year	1991	Publication	Behavioural Processes	Abbreviated Journal	Behav. Process.
	Volume	22	Issue	3	Pages	213-226
	Keywords	Domestic fowl; Dustbathing; Welfare; Learning; Cognition
	Abstract	Domestic fowl were deprived of the opportunity to perform litter-related behaviour for three or four days and were tested in a Y-maze (which they had previously been trained to run) for their ability to associate a coloured cue with gaining access to peat. When the goal boxes were within sight of the choice point, most birds chose peat. However, when the birds had to rely solely on the coloured cue only one bird from 12 showed learning. However, the birds seemed to have some expectation of a reward, as they ran faster if, on the previous trial, they had chosen peat. The inability of the birds to learn the association may have been an artefact of the schedule of deprivation and testing, for when they were hungry and tested in the same way they were again unable to learn an association between the same coloured cue and food reward. The experiment with peat was repeated using “massed” trials (several trials in immediate succession) during training and testing and six from 15 birds showed learning. These results suggest that the initial failure to learn was probably due to the training and testing schedule, that access to peat appears to be rewarding and that hens can learn an association between an abstract cue and a rewarding consequence. This is consistent with the possibility that domestic fowls may have some cognitive representation of peat when it is out of sight.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	3609
Permanent link to this record



	Author	Potts, W.K.; Manning, C.J.; Wakeland, E.K.
	Title	Mating patterns in seminatural populations of mice influenced by MHC genotype			Type	Journal Article
	Year	1991	Publication	Nature	Abbreviated Journal	Nature
	Volume	352	Issue	6336	Pages	619-621
	Keywords
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN		ISBN		Medium
	Area		Expedition		Conference
	Notes	10.1038/352619a0			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5424
Permanent link to this record



	Author	Williams, D.O.; Boatwright, R.B.; Rugh, K.S.; Garner, H.E.; Griggs, D.M.J.
	Title	Myocardial blood flow, metabolism, and function with repeated brief coronary occlusions in conscious ponies			Type	Journal Article
	Year	1991	Publication	The American journal of physiology	Abbreviated Journal	Am J Physiol
	Volume	260	Issue	1 Pt 2	Pages	H100-9
	Keywords	Animals; Consciousness/physiology; Coronary Circulation/physiology; Coronary Disease/pathology/physiopathology; Disease Models, Animal; Hemodynamic Processes/physiology; Horses/physiology; Hydrogen/metabolism; Lactates/metabolism; Myocardium/*metabolism/pathology; Norepinephrine/metabolism; Potassium/metabolism; Regional Blood Flow
	Abstract	Studies were performed in the conscious pony instrumented with a Doppler flow probe and hydraulic occluder on the left anterior descending coronary artery (LAD), sonomicrometry crystals and intraventricular micromanometer in the left ventricle, and catheters in the left atrium and anterior interventricular vein. Two-minute LAD occlusions were performed every 30 min continuously or during working hours. Data on release of catabolites (potassium, hydrogen ions, and lactate) and norepinephrine from the initially dysfunctional region were obtained periodically during a regimen of 445 +/- 56 occlusions in six animals. Regional myocardial blood flow was measured (microsphere method) before and after an occlusion regimen in four animals. Marked release of catabolites and norepinephrine from the initially dysfunctional region was noted in association with early occlusions when myocardial segment function was severely reduced. With further occlusions, release of these substances decreased while segment function improved. Blood flow was markedly decreased in the initially dysfunctional region during an early occlusion but was at the control level during a later occlusion. Although the metabolic findings are consistent with protection due to “ischemic preconditioning” and no increase in collateral perfusion, the inverse relationship noted between catabolite release and segment function is best explained by flow-dependent mechanisms. These results, together with the myocardial blood flow data, serve to validate a previous assumption that protection against regional myocardial dysfunction under these conditions is due to increased collateral perfusion.
	Address	Department of Physiology, University of Missouri, Columbia 65212
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0002-9513	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:1992786			Approved	no
	Call Number	refbase @ user @			Serial	98
Permanent link to this record



	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
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0449-3087	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:1795292			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2247
Permanent link to this record

Select All Deselect All

<< 1 2 3 4 5 6 >>

Details

CQL Search | Library Search | Show Record | Extract Citations

Help