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Author Herder, S.L.
Title More cardiac dressage: galop, gallop, gal(l)opitty glop Type Journal Article
Year 1989 Publication JAMA : the Journal of the American Medical Association Abbreviated Journal Jama
Volume 262 Issue 3 Pages (down) 352
Keywords Animals; Gait; *Heart Rate; Horses; Humans; Terminology; *Wit and Humor
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Publisher Place of Publication Editor
Language English Summary Language Original Title
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ISSN 0098-7484 ISBN Medium
Area Expedition Conference
Notes PMID:2739033 Approved no
Call Number Equine Behaviour @ team @ Serial 3757
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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
Volume 21 Issue 4 Pages (down) 333-345
Keywords
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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Notes Approved no
Call Number refbase @ user @ Serial 3966
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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 (down) 327-334
Keywords
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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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 3570
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Author Rubenstein, D.I.; Hohmann, M.E
Title Parasites and Social Behavior of Island Feral Horses Type Journal Article
Year 1989 Publication Oikos Abbreviated Journal Oikos
Volume 3 Issue Pages (down) 312-320
Keywords
Abstract The horses of Shackelford Banks, North Carolina, USA, are heavily parasitized by intestinal worms and harassed by dipterans, and although both types influence behavior only internal parasites affect bodily condition and the structuring of horse society. Thirteen species of internal parasites were identified, but only 4 of 13 groups contain them all and even within groups differences among individuals are large. Among individuals ova emissions vary ranging from 50 to 76,875 eggs per gram. The most important environmental factors influencing egg production are season and a group's location on the island, presumably because of salinity and soil differences and their effects on ova survival. Of the social and life history factors, age, and group size, but neither reproductive state nor dominance status are important. The fitness consequences of internal parasitism may be large since the number emitted is negatively correlated with next year's bodily condition. Biting fly burdens are also affected by a variety of environmental factors. In general, horses are covered with more flies on sunny days, when winds are moderately brisk, when occupying dunes, and around mid-day. In contrast to endoparasites, fly burden is affected by reproductive condition and dominance status and tends to decrease as groups increase in size. Since groups do not grow very large, nor do females attempt to bring groups together, the negative effects of endoparasites appear to overide those associated with ectoparasites. Consequently, endoparasites appear to exert a stronger influence on social structure, even though ectoparasites seem to play a stronger role in shaping details of behavior.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2360
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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 (down) 269-274
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Notes from Professor Hans Klingels Equine Reference List Approved yes
Call Number Serial 1101
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Author Crowell-Davis, S.L.; Caudle, A.B.
Title Coprophagy by foals: recognition of maternal feces Type Journal Article
Year 1989 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 24 Issue 3 Pages (down) 267-272
Keywords
Abstract Six foals were each observed for 4 h per week during the first 6 weeks of life in an experimental situation in which they had access to feces taken from their mother and from another mare which was not pregnant or lactating. The foals sniffed at the feces equally. Two foals engaged in a total of seven bouts of coprophagy. All bouts of coprophagy involved maternal feces (χ2; P<0.01).
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2273
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Author Cheney, D.L.; Seyfarth, R.M.
Title Reconciliation and redirected aggression in vervet monkeys, Behaviour Type Journal Article
Year 1989 Publication Behaviour Abbreviated Journal Behaviour
Volume 110 Issue Pages (down) 258-275
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 4865
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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 (down) 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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Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0304-4017 ISBN Medium
Area Expedition Conference
Notes PMID:2815535 Approved no
Call Number Equine Behaviour @ team @ Serial 2672
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Author de Waal, F. B.
Title Dominance “style” and primate social organization. Type Book Chapter
Year 1989 Publication Comparative Socioecology Abbreviated Journal
Volume Issue Pages (down) 243-263
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Publisher Blackwell Science Place of Publication Editor Standen, V.; Foley, R. A.
Language Summary Language Original Title
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ISSN ISBN 978-0632023615 Medium
Area Expedition Conference
Notes Approved no
Call Number refbase @ user @ Serial 2864
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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 (down) 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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Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0002-9637 ISBN Medium
Area Expedition Conference
Notes PMID:2774063 Approved no
Call Number Equine Behaviour @ team @ Serial 2673
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