| Records |
| Author |
Houpt, K.A.; Thornton, S.N.; Allen, W.R. |
| Title |
Vasopressin in dehydrated and rehydrated ponies |
Type |
Journal Article |
| Year |
1989 |
Publication |
Physiology & behavior |
Abbreviated Journal |
Physiol. Behav. |
| Volume |
45 |
Issue |
3 |
Pages |
659-661 |
| Keywords |
Animals; Behavior, Animal/*physiology; Dehydration/*blood; Drinking Behavior/*physiology; Female; Horses/*blood; Osmolar Concentration; Reaction Time; Time Factors; Vasopressins/*blood |
| Abstract |
Six pony mares deprived of water for 24 hours showed significant increases in plasma vasopressin (2.8 pg/ml) and osmolality (9 mosmol/kg). When water was made available the ponies drank rapidly (5 of 6 drank to satiety within 90 seconds) and corrected their fluid deficits precisely. Vasopressin did not return to predehydration levels until osmolality did after 15 minutes of access to water. The horse differs from rodents and humans, but is similar to pigs in that vasopressin levels do not fall before osmolality returns to normal. Oropharyngeal factors, therefore, may not be as important in vasopressin release in horses as in other species. |
| Address |
New York State College of Veterinary Medicine, Cornell University, Ithaca 14853-6401 |
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| Language |
English |
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| ISSN |
0031-9384 |
ISBN |
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| Notes |
PMID:2756059 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
45 |
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| Author |
Trim, C.M.; Moore, J.N.; Clark, E.S. |
| Title |
Renal effects of dopamine infusion in conscious horses |
Type |
Journal Article |
| Year |
1989 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
| Volume |
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Issue |
7 |
Pages |
124-128 |
| Keywords |
Animals; Blood Pressure/drug effects/physiology; Consciousness/*physiology; Creatinine/blood; Dopamine/administration & dosage/*pharmacology; Dose-Response Relationship, Drug; Female; Heart Rate/drug effects/physiology; Horses/*physiology; Infusions, Intravenous/veterinary; Kidney/blood supply/*drug effects/physiology; Osmolar Concentration; Potassium/blood; Random Allocation; Regional Blood Flow/drug effects/physiology; Renal Artery/drug effects/physiology/ultrasonography; Sodium/blood; Time Factors; Ultrasonography/methods/veterinary; Urination/physiology |
| Abstract |
An ultrasonic flow probe was implanted around a branch of the left renal artery in five horses. The effects of dopamine were studied in the unsedated horses 10 days after surgery. Three experiments, separated by at least two days, were performed in random order on each horse. In two experiments, dopamine was infused intravenously for 60 mins at either 2.5 and 5.0 micrograms/kg bodyweight (bwt)/min. Saline was infused for 60 mins before and after each infusion, and for 180 mins in the third experiment as a control. Renal blood flow increased during administration of dopamine at both dose rates (P = 0.0001). Urine volume increased (P = 0.055), and osmolality decreased (P < 0.05), with infusion of dopamine at 5.0 micrograms/kg bwt/min. Arterial blood pressure and heart rate were not significantly affected. Fractional excretions of sodium and potassium were not significantly changed with dopamine infusion. The higher dopamine dose rate was accompanied by dysrhythmias in some horses. |
| Address |
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602, USA |
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English |
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| Notes |
PMID:9118094 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
99 |
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| Author |
Hutchinson, G.W.; Abba, S.A.; Mfitilodze, M.W. |
| Title |
Seasonal translation of equine strongyle infective larvae to herbage in tropical Australia |
Type |
Journal Article |
| Year |
1989 |
Publication |
Veterinary Parasitology |
Abbreviated Journal |
Vet Parasitol |
| Volume |
33 |
Issue |
3-4 |
Pages |
251-263 |
| Keywords |
Animals; Feces/*parasitology; Horses; Queensland; Seasons; Strongyle Infections, Equine/*parasitology; Strongyloidea/growth & development/*physiology; Strongylus/growth & development/*physiology; Tropical Climate |
| Abstract |
Longevity in faeces, migration to and survival on herbage of mixed strongyle infective larvae (approximately 70% cyathostomes: 30% large strongyles) from experimentally deposited horse faeces was studied in the dry tropical region of North Queensland for up to 2 years. Larvae were recovered from faeces deposited during hot dry weather for a maximum of 12 weeks, up to 32 weeks in cool conditions, but less than 8 weeks in hot wet summer. Translation to herbage was mainly limited to the hot wet season (December-March), except when unseasonal winter rainfall of 40-50 mm per month in July and August allowed some additional migration. Survival on pasture was estimated at 2-4 weeks in the summer wet season and 8-12 weeks in the autumn-winter dry season (April-August). Hot dry spring weather (pre-wet season) was the most unfavourable for larval development, migration and survival. Peak counts of up to 60,000 larvae kg-1 dry herbage were recorded. The seasonal nature of pasture contamination allowed the development of rational anthelmintic control programs based on larval ecology. |
| Address |
Graduate School of Tropical Veterinary Science, James Cook University of North Queensland, Townsville, Australia |
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English |
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Edition |
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| ISSN |
0304-4017 |
ISBN |
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| Notes |
PMID:2815535 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2672 |
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| Author |
McHugh, C.P. |
| Title |
Ecology of a semi-isolated population of adult Anopheles freeborni: abundance, trophic status, parity, survivorship, gonotrophic cycle length, and host selection |
Type |
Journal Article |
| Year |
1989 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
| Volume |
41 |
Issue |
2 |
Pages |
169-176 |
| Keywords |
Aging/physiology; Animals; Anopheles/*physiology; Breeding; California; Cattle/parasitology; Dogs/parasitology; Ecology; Feeding Behavior/physiology; Female; Horses/parasitology; Host-Parasite Relations; Male; Parity; Population Density; Rabbits/parasitology |
| Abstract |
A population of adult Anopheles freeborni near Sheridan, CA was sampled daily during 13 August-7 September 1984. Data on abundance, trophic status, and gonotrophic age were recorded. Abundance and gonotrophic age data were analyzed to estimate daily survivorship and gonotrophic cycle length. Daily survivorship for unfed mosquitoes was estimated to be 0.72 with a gonotrophic cycle of 6 days duration. Daily survivorship for bloodfed mosquitoes was estimated to be 0.74 with a gonotrophic cycle of 4 days. The 2 day difference in gonotrophic cycles between unfed and bloodfed mosquitoes was the result of the period required for maturation and mating of teneral females. In 1986, an incage release of field-collected females estimated survivorship at 0.75 per day. Precipitin tests of 1,338 blood-engorged mosquito abdomens indicated that bovids, horses, rabbits, and canids comprised 92% of bloodmeals; no bloodmeals of human origin were detected. |
| Address |
Department of Entomology, University of California, Davis |
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English |
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| ISSN |
0002-9637 |
ISBN |
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| Notes |
PMID:2774063 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2673 |
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| Author |
Galdikas, B.M. |
| Title |
Orangutan tool use |
Type |
Journal Article |
| Year |
1989 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
243 |
Issue |
4888 |
Pages |
152 |
| Keywords |
Animals; Animals, Wild; *Behavior, Animal; Cognition; *Hominidae; Humans; *Pongo pygmaeus |
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English |
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| ISSN |
0036-8075 |
ISBN |
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| Notes |
PMID:2911726 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2847 |
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| Author |
Duncan, I.J.H.; Petherick, J.C. |
| Title |
Proceeding (Paper presented at the Winter Meeting of the Society for Veterinary Ethology, London, Great Britain, 30 November 1988)Cognition: The implications for animal welfare |
Type |
Journal Article |
| Year |
1989 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
24 |
Issue |
1 |
Pages |
81-1010 |
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no |
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Equine Behaviour @ team @ |
Serial |
2921 |
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| Author |
Walker, S. |
| Title |
An introduction to animal cognition : By . Hillsdale, New Jersey: Lawrence Erlbaum (1988). Pp. viii + 328. Price [pound sign]8.95 paperback |
Type |
Journal Article |
| Year |
1989 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
37 |
Issue |
Part 3 |
Pages |
521-522 |
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no |
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Equine Behaviour @ team @ |
Serial |
2922 |
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| Author |
Chandler M; Fritz AS; Hala S |
| Title |
Small scale deceit: deception marker of 2-, 3- and 4-year-olds' early theories of mind |
Type |
Journal Article |
| Year |
1989 |
Publication |
Child Dev. |
Abbreviated Journal |
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| Volume |
60 |
Issue |
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Pages |
1263 |
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no |
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Equine Behaviour @ team @ |
Serial |
2986 |
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| Author |
Povinelli DJ |
| Title |
Failure to find self-recognition in Asian elephants (Elephas maximus) in contrast to their use of mirror cues to discover hidden food |
Type |
Journal Article |
| Year |
1989 |
Publication |
J. Comp. Psychol. |
Abbreviated Journal |
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| Volume |
103 |
Issue |
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Pages |
122 |
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no |
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Equine Behaviour @ team @ |
Serial |
3026 |
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| Author |
Dewsbury, D.A. |
| Title |
Comparative Psychology, Ethology, and Animal Behavior |
Type |
Journal Article |
| Year |
1989 |
Publication |
Annual Review of Psychology |
Abbreviated Journal |
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| Volume |
40 |
Issue |
1 |
Pages |
581-602 |
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Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
3541 |
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