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Author Houpt, K.A.
Title Why horse behaviour is important to the equine clinician Type Journal Article
Year 2006 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 38 Issue 5 Pages 386-387
Keywords Accidents, Occupational/prevention & control; Aggression; Animals; *Behavior, Animal/physiology; Clinical Competence; Fear; Horses/*physiology; Humans; Veterinarians/psychology; Veterinary Medicine/*standards
Abstract
Address Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853-6401, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:16986596 Approved (up) no
Call Number refbase @ user @ Serial 30
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Author Virga, V.; Houpt, K.A.
Title Prevalence of placentophagia in horses Type Journal Article
Year 2001 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 33 Issue 2 Pages 208-210
Keywords Animals; *Behavior, Animal; Colic/epidemiology/*veterinary; Exploratory Behavior; *Feeding Behavior; Female; Horse Diseases/*epidemiology; Horses; Incidence; New York/epidemiology; *Placenta; Postpartum Period; Pregnancy; Prevalence; Questionnaires
Abstract
Address Animal Behavior Clinic, Cornell University Hospital for Animals, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA
Corporate Author Thesis
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:11266073 Approved (up) no
Call Number refbase @ user @ Serial 31
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Author Houpt, K.A.; Eggleston, A.; Kunkle, K.; Houpt, T.R.
Title Effect of water restriction on equine behaviour and physiology Type Journal Article
Year 2000 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 32 Issue 4 Pages 341-344
Keywords Animals; *Behavior, Animal; Blood Proteins/analysis; Energy Intake; Female; Horse Diseases/physiopathology; Horses/*physiology; Osmolar Concentration; Pregnancy; Stress/veterinary; Video Recording; Water Deprivation/*physiology
Abstract Six pregnant mares were used to determine what level of water restriction causes physiological and/or behavioural changes indicative of stress. Nonlegume hay was fed ad libitum. During the first week of restriction, 5 l water/100 kg bwt was available, during the second week 4 l/100 kg bwt and, during the third week, 3 l/100 kg bwt. Ad libitum water intake was 6.9 l/100 kg bwt; at 3 l/100 kg bwt water intake was 42% of this. Daily hay intake fell significantly with increasing water restriction from 12.9 +/- 0.75 kg to 8.3 +/- 0.54 kg; bodyweight fell significantly for a total loss of 48.5 +/- 8.3 kg in 3 weeks. Daily blood samples were analysed; osmolality rose significantly with increasing water restriction from 282 +/- 0.7 mosmols/kg to 293.3 +/- 0.8 mosmols/kg bwt, but plasma protein and PCV did not change significantly. Cortisol concentrations fell from 8.1 ng/ml to 6.4 ng/ml over the 3 week period. Aldosterone fell from 211.3 +/- 74.2 pg/ml to 92.5 +/- 27.5 pg/ml at the end of the first week. The behaviour of 4 of the 6 mares was recorded 24 h/day for the duration of the study. The only significant difference was in time spent eating, which decreased with increasing water restriction from 46 +/- 3% to 30 +/- 3%. It is concluded that water restriction to 4 l/100 kg bwt dehydrates pregnant mares and may diminish their welfare, but is not life- or pregnancy-threatening.
Address Department of Physiology, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853-6401, USA
Corporate Author Thesis
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Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:10952384 Approved (up) no
Call Number refbase @ user @ Serial 32
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Author Houpt, K.A.
Title New perspectives on equine stereotypic behaviour Type
Year 1995 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 27 Issue 2 Pages 82-83
Keywords Animals; Horses/*psychology; Stereotyped Behavior/*physiology
Abstract
Address
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Language English Summary Language Original Title
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ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:7607153 Approved (up) no
Call Number refbase @ user @ Serial 34
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Author Shaw, E.B.; Houpt, K.A.; Holmes, D.F.
Title Body temperature and behaviour of mares during the last two weeks of pregnancy Type Journal Article
Year 1988 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 20 Issue 3 Pages 199-202
Keywords Animals; *Behavior, Animal; *Body Temperature; Circadian Rhythm; Eating; Female; Horses/*physiology; Labor, Obstetric/*physiology; Motor Activity; Pregnancy; Pregnancy, Animal/*physiology
Abstract Average daily core body temperature and behavioural patterns of pregnant mares were studied, in search of definitive signs of parturition within 24 h of the event. Nineteen pony mares were sampled twice daily for core body temperature. A significant temperature drop, averaging 0.1 degrees C (0.2 degrees F) was observed during the day prior to parturition. Between 18.00 h and 06.00 h, during the two weeks before parturition, Thoroughbred and Standardbred mares (n = 52) spent an average 66.8 per cent of their time standing, 27.0 per cent eating, 4.9 per cent lying in sternal recumbency, 1.0 per cent lying in lateral recumbency, and 0.3 per cent walking. On the night before parturition, mares spent significantly less time lying in sternal recumbency than on previous nights and on the night of parturition all behaviour patterns except eating were significantly different from the nights of the two weeks before parturition. There was an increase in walking (5.3 per cent), lying in sternal recumbency (8 per cent) and lying in lateral recumbency (5.3 per cent) whereas standing (53.3 per cent) was decreased. In 58 observed pregnancies, 54 mares (97 per cent) foaled in a recumbent position and 50 mares (86 per cent) foaled between 18.00 h and 06.00 h.
Address Department of Physiology, New York State College of Veterinary Medicine, Cornell University, Ithaca 14853
Corporate Author Thesis
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Language English Summary Language Original Title
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ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:3402416 Approved (up) no
Call Number refbase @ user @ Serial 46
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Author Crowell-Davis, S.L.; Houpt, K.A.
Title Coprophagy by foals: effect of age and possible functions Type Journal Article
Year 1985 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 17 Issue 1 Pages 17-19
Keywords *Aging; Animals; *Coprophagia; Deoxycholic Acid/physiology; Female; Horse Diseases/*physiopathology; Horses; Humans; Male; Pheromones/physiology; Time Factors; Urination
Abstract In colts and fillies observed from birth to 24 weeks old, coprophagy occurred from Weeks 1 to 19. Its frequency was greatest during the first two months. Coprophagy was rarely observed in mares and stallions. Foals usually ate the faeces of their mother but were observed to eat their own and those of a stallion and another unrelated mare. Urination by the foal occurred before, during or after 26 per cent of the coprophagy incidents. It is hypothesised that foals may consume faeces in response to a maternal pheromone which signals the presence of deoxycholic acid or other acids which the foal may be deficient in and which it may require for gut immuno-competence myelination of the nervous system. Such a pheromone may also serve to accelerate growth and sexual maturation. Coprophagy may also provide nutrients and introduce normal bacterial flora to the gut.
Address
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ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:4038939 Approved (up) no
Call Number refbase @ user @ Serial 55
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Author Sufit, E.; Houpt, K.A.; Sweeting, M.
Title Physiological stimuli of thirst and drinking patterns in ponies Type Journal Article
Year 1985 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 17 Issue 1 Pages 12-16
Keywords Animals; Blood Proteins/analysis; Drinking Behavior/drug effects/*physiology; Furosemide/pharmacology; Horses/*physiology; Male; Osmolar Concentration; Osmotic Pressure; Sodium Chloride/pharmacology; Thirst/drug effects/*physiology; Time Factors; Water Deprivation/physiology
Abstract The stimuli that elicit thirst were studied in four ponies. Nineteen hours of water deprivation produced an increase in plasma protein from 67 +/- 0.1 g/litre to 72 +/- 2 g/litre, a mean (+/- se) increase in plasma sodium from 139 +/- 3 to 145 +/- 2 mmol/litre and an increase in plasma osmolality from 297 +/- 1 to 306 +/- 2 mosmol/litre. Undeprived ponies drank 1.5 +/- 0.9 kg/30 mins; 19 h deprived ponies drank 10.2 +/- 2.5 kg/30 mins and corrected the deficits in plasma protein, plasma sodium and plasma osmolality as well as compensating for the water they would have drunk during the deprivation period. In order to determine if an increase in plasma osmolality would stimulate thirst, 250 ml of 15 per cent sodium chloride was infused intravenously. The ponies drank when osmolality increased 3 per cent and when plasma sodium rose from 136 +/- 3 mmol/litre to 143 +/- 3 mmol/litre. Ponies infused with 15 per cent sodium chloride drank 2.9 +/- 0.7 kg; those infused with 0.9 per cent sodium chloride drank 0.7 +/- 0.5 kg. In order to determine if a decrease in plasma volume would stimulate thirst, ponies were injected with 1 or 2 mg/kg bodyweight (bwt) frusemide. Plasma protein rose from 68 +/- 2 g/litre pre-injection to 75 +/- 2 g/litre 1 h after 1 mg/kg bwt frusemide and to 81 +/- 1 g/litre 1 h after 2 mg/kg bwt frusemide.(ABSTRACT TRUNCATED AT 250 WORDS)
Address
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0425-1644 ISBN Medium
Area Expedition Conference
Notes PMID:3979367 Approved (up) no
Call Number refbase @ user @ Serial 56
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Author Hodgson, D.; Howe, S.; Jeffcott, L.; Reid, S.; Mellor, D.; Higgins, A.
Title Effect of prolonged use of altrenogest on behaviour in mares Type
Year 2005 Publication Veterinary journal (London, England : 1997) Abbreviated Journal Vet J
Volume 169 Issue 1 Pages 113-115
Keywords Administration, Oral; Anabolic Agents/adverse effects/*pharmacology; Animals; Behavior, Animal/*drug effects; Body Constitution/drug effects; Body Weight/drug effects; *Doping in Sports; Female; Horses/*physiology; Social Behavior; Social Dominance; Time Factors; Trenbolone/adverse effects/*analogs & derivatives/*pharmacology
Abstract Erratum in:

Vet J. 2005 May;169(3):321.

Corrected and republished in:

Vet J. 2005 May;169(3):322-5.

Oral administration of altrenogest for oestrus suppression in competition horses is believed to be widespread in some equestrian disciplines, and can be administered continuously for several months during a competition season. To examine whether altrenogest has any anabolic or other potential performance enhancing properties that may give a horse an unfair advantage, we examined the effect of oral altrenogest (0.044 mg/kg), given daily for a period of eight weeks, on social hierarchy, activity budget, body-mass and body condition score of 12 sedentary mares. We concluded that prolonged oral administration of altrenogest at recommended dose rates to sedentary mares resulted in no effect on dominance hierarchies, body mass or condition score.
Address Faculty of Veterinary Science, University of Sydney, Private Mailbag 4, Narellan Delivery Centre, Narellan, NSW 2567, Australia. davidh@camden.usyd.edu.au
Corporate Author Thesis
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1090-0233 ISBN Medium
Area Expedition Conference
Notes PMID:15683772 Approved (up) no
Call Number refbase @ user @ Serial 671
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Author Houpt, K.A.; Wolski, T.R.
Title Stability of equine hierarchies and the prevention of dominance related aggression Type Journal Article
Year 1980 Publication Equine veterinary journal Abbreviated Journal Equine Vet J
Volume 12 Issue 1 Pages 15-18
Keywords *Aggression; Animals; *Behavior, Animal; Feeding Behavior; Female; *Hierarchy, Social; *Horses; Humans; Male; Maternal Behavior; *Social Dominance
Abstract The dominance hierarchy of a herd of 10 Thoroughbred mares was determined twice, at an interval of 18 months, using paired feeding tests. Each mare's rank was correlated significantly between the 2 tests. This indicated that the hierarchy within the herd was stable. The offspring of dominant and subordinate mares were also tested for dominance in their own age groups. The offspring of dominant mares tended to be near the top of the hierarchy while those of middle and low ranking mares were not consistently found in the middle or bottom of their own hierarchies. Paired feeding tests were carried out on 8 ponies. During tests the time that each pony spent eating and the ponies' aggressive interactions were recorded. Two situations were used. Each pony-pair was tested when both ponies were in the same paddock and also when they were separated by a rail fence. The subordinate ponies spent significantly more time eating and the domonant pony was significantly less aggressive, when the pony-pair was separated by a fence than when they were in one paddock. It was concluded that the dominance hierarchies of adult horse groups changed very little over time and that the foals of dominant mares will tend to be dominant in their own age groups. Management practices can be used to reduce aggression and consequent injury that may arise in group feeding situations.
Address
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Language English Summary Language Original Title
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ISSN 0425-1644 ISBN Medium
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Notes PMID:7189148 Approved (up) no
Call Number refbase @ user @ Serial 59
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Author Douglas Wilson, A.
Title The effects of diet on blood glucose, insulin, gastrin and the serum tryptophan: Large neutral amino acid ratio in foals Type Journal Article
Year 2006 Publication The Veterinary Journal Abbreviated Journal Vet J
Volume Issue Pages
Keywords Diet; Horse; Insulin; Gastrin; Tryptophan
Abstract High carbohydrate diets can affect the health and behaviour of foals, but the mechanisms are not always fully understood. The objective of this study was to compare the effects of feeding a starch and sugar (SS), or a fat (oil) and fibre (FF) rich diet to two groups of eight foals. Diets were fed from 4 to 42 weeks of age, alongside ad libitum forage. Faecal pH levels did not differ significantly between groups and endoscopic examination showed that the gastric mucosa was healthy in both groups at 25 and 42 weeks of age. At 40 weeks of age, SS foals had significantly higher total blood glucose and lower total blood gastrin than FF foals during the 6h period following ingestion of their respective diets, but insulin levels did not differ significantly. The ratio between serum tryptophan and other large neutral amino acids showed a trend towards an interaction between diet and sampling time. The results provide preliminary information about the effects of diet on the physiology of young horses.
Address School of Veterinary Science, University of Bristol, Langford House, Bristol BS40 5DU, UK
Corporate Author Amanda J. Badnell-Watersb, Rachel Biceb, Ailison Kellandb, Pat A. Harrisc and Christine J. Nicol 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 1090-0233 ISBN Medium
Area Expedition Conference
Notes PMID:16945560 Approved (up) no
Call Number refbase @ user @ Serial 63
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