| Records |
| 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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Equine Behaviour @ team @ |
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2922 |
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| Author |
Hunter, L.; Houpt, K..A. |
| Title |
Bedding material preferences of ponies. |
Type |
Journal Article |
| Year |
1989 |
Publication |
Journal of American Society of Animal Science |
Abbreviated Journal |
J Anim Sci |
| Volume |
67 |
Issue |
8 |
Pages |
1986-1991 |
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| Abstract |
The bedding preferences of ponies were determined using video recordings of nighttime (1900 to 0700) behavior of individually housed ponies. The ponies' behavior each minute was recorded to determine time budgets. In Exp. I, preference for bedding was determined using three mares, three stallions and two geldings given access to bedded and unbedded areas in a box stall. The ponies spent more time (66%) on the bedded area and were never observed lying on the unbedded areas. In Exp. II, three mares and six stallions were given access to a box stall, one side of which was bedded with wood shavings and the other with straw. Although some individual animals preferred one bedding over the other, neither form of bedding was preferred consistently. Time budgets in Exp. II were similar on both bedding materials. The ponies spent 12% of their nighttime lying, 2% walking, 35% eating and 50% standing inactively. Some ponies had a relatively strong preference for bedding, but the type of bedding preferred varied with the individual animal. Some individual ponies had no clear preference, but instead had a side or position preference |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
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Serial |
1211 |
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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. |
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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 |
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no |
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refbase @ user @ |
Serial |
99 |
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| Author |
Stahlbaum, C.C.; Houpt, K.A. |
| Title |
The role of the Flehmen response in the behavioral repertoire of the stallion |
Type |
Journal Article |
| Year |
1989 |
Publication |
Physiology & behavior |
Abbreviated Journal |
Physiol. Behav. |
| Volume |
45 |
Issue |
6 |
Pages |
1207-1214 |
| Keywords |
Animals; Behavior, Animal/*physiology; Circadian Rhythm; Discrimination (Psychology)/physiology; Estrus; Feces; Female; Horses/*physiology; Male; Sexual Behavior, Animal/*physiology; Smell/*physiology; Taste/physiology; Urine |
| Abstract |
The role of the Flehmen response in equine behavior was investigated under field and laboratory conditions. In Experiment 1, a field study made of five stallions on pasture with between three and eighteen mares each during the season indicated the following: 1) The Flehmen response was most frequently preceded by nasal, rather than oral, investigation of substances; 2) The stallions' rate of Flehmen varied with the estrous cycles of the mares; 3) The rate of Flehmen response did not show a variation with time of day; and 4) The Flehmen response was most frequently followed by marking behaviors rather than courtship behaviors. The results suggest that the Flehmen response is not an immediate component of sexual behavior, e.g., courtship of the stallion but may be involved in the overall monitoring of the mare's estrous cycle. Therefore the Flehmen response may contribute to the chemosensory priming of the stallion for reproduction. In Experiment 2 stallions were presented with urine or feces of mares in various stages of the reproductive cycle as well as with their own or other males' urine or feces. The occurrence of sniffing and Flehmen was used to determine the discriminatory ability of the stallions. Stallions can differentiate the sex of a horse on the basis of its feces alone, but cannot differentiate on the basis of urine. This ability may explain the function of fecal marking behavior of stallions. |
| Address |
New York State College of Veterinary Medicine, Cornell University, Ithaca 14853 |
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English |
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0031-9384 |
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| Notes |
PMID:2813545 |
Approved |
no |
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refbase @ user @ |
Serial |
44 |
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| Author |
Lloyd, P.H.; Rasa, O.A.E. |
| Title |
Status, reproductive success and fitness in Cape mountain zebra (Equus zebra zebra) |
Type |
Journal Article |
| Year |
1989 |
Publication |
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Abbreviated Journal |
Behavioral Ecology and Sociobiology |
| Volume |
25 |
Issue |
6 |
Pages |
411-420 |
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| Abstract |
Demographic data relating to herd size and stability are given for a population of Cape mountain zebra (Equus zebra zebra) under longterm observation. Temporal dispersion patterns of male and female offspring differed and were independent of the mother's status. Dispersion in females appeared to be related to physiological state, and dispersion in both sexes was related to age rather than changes in parental behaviour. Reproductive success of dominant and subordinate mares was equal and independent of age and social and reproductive variables. Fitness of dominant mares, however, was significantly higher than that of subordinates, the latter having a higher foal mortality, part of which could be attributable to dominants' aggression. The fitness of all males born was 1.6:1 compared with all females. Dominant mares produced significantly more daughters than sons. This trend was not found for subordinates. Mother's status was positively correlated with dominant status in her female offspring but not related to the subsequent status of her sons. Daughters had a more than twice as great a chance of breeding than sons. For maximum fitness gains, therefore, dominant mares should produce more daughters, since a high proportion of these would also have high status and fitness. This tendency is reflected in the sex ratio skewed towards females found for dominant mares. |
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Springer-Verlag |
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English |
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0340-5443 |
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no |
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Equine Behaviour @ team @ |
Serial |
5787 |
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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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0036-8075 |
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| Notes |
PMID:2911726 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2847 |
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| Author |
Gao, X; Gu, J. |
| Title |
The distribution and status of the Equidae in China. |
Type |
Journal Article |
| Year |
1989 |
Publication |
Acta Theriologica Sinica |
Abbreviated Journal |
Acta Theriol. Sin. |
| Volume |
9 |
Issue |
4 |
Pages |
269-274 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
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Serial |
1101 |
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| Author |
Huizinga, H.A.; van der Meij, G.J.W. |
| Title |
Estimated parameters of performance in jumping and dressage competition of the Dutch Warmblood horse |
Type |
Journal Article |
| Year |
1989 |
Publication |
Livestock Production Science |
Abbreviated Journal |
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| Volume |
21 |
Issue |
4 |
Pages |
333-345 |
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| Abstract |
The objective of this study is to estimate several genetic parameters in the Dutch Warmblood riding horse population. The traits involved are performances in jumping and dressage competition. The following parameters are estimated: heritabilities for jumping and dressage; phenotypic and genetic correlations between jumping and dressage; and phenotypic and genetic correlations between performances at different ages. These parameters are estimated by restricted maximum likelihood (REML). Data are from 6899 horses with performances in jumping and 10 408 horses with performances in dressage competition. The horses are sired by 205 and 237 stallions for the two traits, respectively. The progeny range in age from 4 to 8 years old. The performance trait is a cumulatively derived score, that reflects the level of performance in competition. A square root transformation of the score is most appropriate to normalize the data. For estimation of phenotypic and genetic parameters the data is split into two data sets according to the age of the sires (offspring sired by older vs. younger stallions). For estimating correlations between performances at 4, 5 and 6 years of age, performances of the offspring out of previous years are linked to the data. The most unbiased estimates of heritability for jumping and dressage are from data derived from the youngest offspring sired by the younger stallions and are 0.20 and 0.10, respectively. Genetic correlation between jumping and dressage ranges from -0.27 to 0.10. The phenotypic correlation between these traits ranges from 0.15 to 0.26. Phenotypic and genetic correlations between performances at 4, 5 and 6 years average 0.95 and 0.75, respectively. These latter results have important implications for genetic evaluation of breeding candidates in the population. |
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no |
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refbase @ user @ |
Serial |
3966 |
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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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0304-4017 |
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| Notes |
PMID:2815535 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2672 |
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| Author |
McCall, C.A. |
| Title |
The effect of body condition of horses on discrimination learning abilities |
Type |
Journal Article |
| Year |
1989 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
22 |
Issue |
3-4 |
Pages |
327-334 |
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| Abstract |
Discriminative learning abilities were studied in 12 mature, malnourished horses. All horses initially received a condition score (CS) between 2 and 4 on a scale of 1 (poor) to 9 (extremely fat). Then horses were assigned to one of 3 treatments based on their eventual, rehabilitated CS during discrimination testing: thin, CS 1-3; moderate, CS 4-6; and fat, CS 7-9. The discrimination learning task was performed for 14 days with a maximum of 20 trials per day. Daily criterion was set at eight consecutively correct trails. Total trials to first criteria and total errors during testing were recorded. Analysis of variance showed that treatments did not differ (P>0.05) in total trials to first criterion, however horses on the fat treatment did have higher total error scores (P<0.05) than horses on the thin or moderate treatments. This difference was probably owing to lack of motivation in the fat treatment horses, rather than to true learning ability differences. The sex of the horse did not significantly affect either learning score. |
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Equine Behaviour @ team @ |
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3570 |
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