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Author |
Alexander, F.; Collett, R.A. |
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Title |
Pethidine in the horse |
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Journal Article |
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Year |
1974 |
Publication |
Research in veterinary science |
Abbreviated Journal |
Res Vet Sci |
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Volume |
17 |
Issue |
1 |
Pages |
136-137 |
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Keywords |
Animals; Half-Life; Horses/*metabolism; Injections, Intravenous/veterinary; Male; Meperidine/administration & dosage/analysis/*metabolism/pharmacology |
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0034-5288 |
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PMID:4421117 |
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Serial |
113 |
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Author |
Alexander, F.; Davies, M.E.; Muir, A.R. |
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Title |
Bacteriophage-like particles in the large intestine of the horse |
Type |
Journal Article |
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Year |
1970 |
Publication |
Research in veterinary science |
Abbreviated Journal |
Res Vet Sci |
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Volume |
11 |
Issue |
6 |
Pages |
592-593 |
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Keywords |
Animals; Bacteriophages/*isolation & purification; Cecum/microbiology; Colon/microbiology |
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0034-5288 |
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PMID:5498578 |
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no |
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Call Number |
refbase @ user @ |
Serial |
114 |
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Author |
Alexander, F. |
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Title |
Factors affecting the blood sugar concentration in horses |
Type |
Journal Article |
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Year |
1955 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
40 |
Issue |
1 |
Pages |
24-31 |
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Keywords |
Blood Glucose/*analysis; *Horses; *BLOOD SUGAR/determination; *Horses |
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0033-5541 |
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Notes |
PMID:14371987 |
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Call Number |
refbase @ user @ |
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123 |
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Author |
Alexander, F. |
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Title |
Some functions of the large intestine of the horse |
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Journal Article |
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Year |
1952 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
37 |
Issue |
4 |
Pages |
205-214 |
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Keywords |
*Horses; *Intestine, Large; *Horses; *Intestine, Large |
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0033-5541 |
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Notes |
PMID:13014259 |
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no |
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refbase @ user @ |
Serial |
127 |
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Author |
Alexander, F.; Benzie, D. |
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Title |
A radiological study of the digestive tract of the foal |
Type |
Journal Article |
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Year |
1951 |
Publication |
Quarterly journal of experimental physiology and cognate medical sciences |
Abbreviated Journal |
Q J Exp Physiol Cogn Med Sci |
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Volume |
36 |
Issue |
4 |
Pages |
213-217 |
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Keywords |
Gastrointestinal Tract/*radiography; *Horses; *GASTROINTESTINAL SYSTEM/radiography; *Horses; *MYOCARDITIS/etiology and pathogenesis |
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0033-5541 |
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Notes |
PMID:14892238 |
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no |
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Call Number |
refbase @ user @ |
Serial |
129 |
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Author |
Khalil, A.M.; Murakami, N.; Kaseda, Y. |
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Title |
Relationship between plasma testosterone concentrations and age, breeding season and harem size in Misaki feral horses |
Type |
Journal Article |
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Year |
1998 |
Publication |
The Journal of veterinary medical science / the Japanese Society of Veterinary Science |
Abbreviated Journal |
J Vet Med Sci |
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Volume |
60 |
Issue |
5 |
Pages |
643-645 |
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Keywords |
Age Factors; Animals; Animals, Wild; *Horses; Japan; Male; Reproduction; Seasons; Sexual Behavior, Animal; Sexual Maturation; *Social Behavior; Testosterone/*blood |
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Abstract |
Jugular vein blood samples were collected from 23 young and sexual mature feral stallions to examine the relationship between plasma testosterone concentration and age, breeding season or harem size. Testosterone concentration increased with the age of the stallions until they formed their own harems, at about 4 to 6 years old. Seasonal variations in testosterone concentrations were observed, and found to be significantly higher (P<0.001) throughout the breeding season than non-breeding season, from 3 years of age. Testosterone levels were correlated with harem size for individual stallions. It can be inferred from these results that there is a relationship between plasma testosterone concentration and age, breeding season and harem size. |
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Address |
Laboratory of Animal Behavioral Science, Faculty of Agriculture, Miyazaki University, Japan |
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English |
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ISSN |
0916-7250 |
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Notes |
PMID:9637303 |
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no |
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Call Number |
refbase @ user @ |
Serial |
137 |
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Author |
Kirkpatrick, J.F.; Turner, A. |
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Title |
Absence of effects from immunocontraception on seasonal birth patterns and foal survival among barrier island wild horses |
Type |
Journal Article |
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Year |
2003 |
Publication |
Journal of applied animal welfare science : JAAWS |
Abbreviated Journal |
J Appl Anim Welf Sci |
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Volume |
6 |
Issue |
4 |
Pages |
301-308 |
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Keywords |
Animals; Animals, Newborn; Animals, Wild/*physiology; Birth Rate; Case-Control Studies; Contraception, Immunologic/methods/*veterinary; Egg Proteins/administration & dosage; Female; Horses/*physiology; Maryland/epidemiology; Membrane Glycoproteins/administration & dosage; Population Control; Pregnancy; *Receptors, Cell Surface; *Reproduction; Seasons; Vaccines, Contraceptive/administration & dosage |
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Abstract |
Despite a large body of safety data, concern exists that porcine zonae pellucidae (PZP) immunocontraception--used to manage wild horse populations--may cause out-of-season births with resulting foal mortality. Our study at Assateague, Maryland indicated the effects of immunocontraception on season of birth and foal survival between 1990 and 2002 on wild horses from Assateague Island. Among 91 mares never treated, 69 (75.8%) of foals were born in April, May, and June (in season). Among 77 treated mares, 50 (64.9%) were born in season. Of 29 mares foaling within 1 year after treatment (contraceptive failures), 20 (68.9%) were born in season. Of 48 mares treated for greater than 2 years then withdrawn from treatment, 30 (62.5%) of 48 foals were born in season. There were no significant differences (p <.05) between either treatment group or untreated mares. Survival did not differ significantly among foals born in or out of season or among foals born to treated or untreated mares. Data indicate a lack of effect of PZP contraception on season of birth or foal survival on barrier island habitats. |
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Address |
Science and Conservation Center Zoo Montana, Billings, Montana 59106, USA. jkirkpatrick@montana.net |
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ISSN |
1088-8705 |
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Notes |
PMID:14965784 |
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Call Number |
refbase @ user @ |
Serial |
140 |
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Author |
Blaisdell, A.P.; Sawa, K.; Leising, K.J.; Waldmann, M.R. |
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Title |
Causal reasoning in rats |
Type |
Journal Article |
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Year |
2006 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
311 |
Issue |
5763 |
Pages |
1020-1022 |
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Keywords |
Animals; *Association Learning; Bayes Theorem; *Cognition; Comprehension; Forecasting; Male; Rats; Rats, Long-Evans |
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Abstract |
Empirical research with nonhuman primates appears to support the view that causal reasoning is a key cognitive faculty that divides humans from animals. The claim is that animals approximate causal learning using associative processes. The present results cast doubt on that conclusion. Rats made causal inferences in a basic task that taps into core features of causal reasoning without requiring complex physical knowledge. They derived predictions of the outcomes of interventions after passive observational learning of different kinds of causal models. These competencies cannot be explained by current associative theories but are consistent with causal Bayes net theories. |
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Department of Psychology, University of California, Los Angeles, CA 90095, USA. blaisdell@psych.ucla.edu |
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1095-9203 |
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Notes |
PMID:16484500 |
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no |
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Call Number |
refbase @ user @ |
Serial |
154 |
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Author |
Bonnie, K.E.; Horner, V.; Whiten, A.; de Waal, F.B.M. |
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Title |
Spread of arbitrary conventions among chimpanzees: a controlled experiment |
Type |
Journal Article |
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Year |
2007 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
274 |
Issue |
1608 |
Pages |
367-372 |
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Abstract |
Wild chimpanzees (Pan troglodytes) have a rich cultural repertoire--traditions common in some communities are not present in others. The majority of reports describe functional, material traditions, such as tool use. Arbitrary conventions have received far less attention. In the same way that observations of material culture in wild apes led to experiments to confirm social transmission and identify underlying learning mechanisms, experiments investigating how arbitrary habits or conventions arise and spread within a group are also required. The few relevant experimental studies reported thus far have relied on cross-species (i.e. human-ape) interaction offering limited ecological validity, and no study has successfully generated a tradition not involving tool use in an established group. We seeded one of two rewarded alternative endpoints to a complex sequence of behaviour in each of two chimpanzee groups. Each sequence spread in the group in which it was seeded, with many individuals unambiguously adopting the sequence demonstrated by a group member. In one group, the alternative sequence was discovered by a low ranking female, but was not learned by others. Since the action-sequences lacked meaning before the experiment and had no logical connection with reward, chimpanzees must have extracted both the form and benefits of these sequences through observation of others. |
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Living Links, Yerkes National Primate Research Center, Atlanta, GA 30329, USA. kebonni@emory.edu |
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ISSN |
0962-8452 |
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PMID:17164200 |
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no |
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Call Number |
refbase @ user @ |
Serial |
157 |
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Author |
Horner, V.; Whiten, A.; Flynn, E.; de Waal, F.B.M. |
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Title |
Faithful replication of foraging techniques along cultural transmission chains by chimpanzees and children |
Type |
Journal Article |
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Year |
2006 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
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Volume |
103 |
Issue |
37 |
Pages |
13878-13883 |
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Keywords |
Animals; Child, Preschool; Humans; *Imitative Behavior; Pan troglodytes/*psychology |
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Abstract |
Observational studies of wild chimpanzees (Pan troglodytes) have revealed population-specific differences in behavior, thought to represent cultural variation. Field studies have also reported behaviors indicative of cultural learning, such as close observation of adult skills by infants, and the use of similar foraging techniques within a population over many generations. Although experimental studies have shown that chimpanzees are able to learn complex behaviors by observation, it is unclear how closely these studies simulate the learning environment found in the wild. In the present study we have used a diffusion chain paradigm, whereby a behavior is passed from one individual to the next in a linear sequence in an attempt to simulate intergenerational transmission of a foraging skill. Using a powerful three-group, two-action methodology, we found that alternative methods used to obtain food from a foraging device (“lift door” versus “slide door”) were accurately transmitted along two chains of six and five chimpanzees, respectively, such that the last chimpanzee in the chain used the same method as the original trained model. The fidelity of transmission within each chain is remarkable given that several individuals in the no-model control group were able to discover either method by individual exploration. A comparative study with human children revealed similar results. This study is the first to experimentally demonstrate the linear transmission of alternative foraging techniques by non-human primates. Our results show that chimpanzees have a capacity to sustain local traditions across multiple simulated generations. |
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Centre for Social Learning and Cognitive Evolution, School of Psychology, University of St. Andrews, Fife KY16 9JP, United Kingdom |
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0027-8424 |
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PMID:16938863 |
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refbase @ user @ |
Serial |
159 |
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