| Records |
Author  |
Klingel, H. |
| Title |
Dix ans parmi les zèbres |
Type |
Journal Article |
| Year |
1991 |
Publication |
Terre Sauvage |
Abbreviated Journal |
Terre Sauvage |
| Volume |
48 |
Issue |
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Pages |
34-43 |
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| Notes |
from Professor Hans Klingels Equine Reference List |
Approved |
yes |
| Call Number |
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Serial |
1321 |
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| Author |
Krzak, W.E.; Gonyou, H.W.; Lawrence, L.M. |
| Title |
Wood chewing by stabled horses: diurnal pattern and effects of exercise |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
69 |
Issue |
3 |
Pages |
1053-1058 |
| Keywords |
Animal Feed; Animals; *Behavior, Animal; *Circadian Rhythm; Female; Horses/*physiology; Male; *Mastication; *Physical Conditioning, Animal; Sodium Chloride/administration & dosage; Videotape Recording; Wood |
| Abstract |
Nine yearling horses, stabled in individual stalls, were used in a trial to determine the diurnal pattern of wood chewing and the effects of exercise on this behavior. The trial was a Latin square design conducted over three 2-wk periods during which each horse was exposed to each of the three following treatments: 1) no exercise (NE), 2) exercise after the morning feeding (AM), and 3) exercise in the afternoon (PM). Horses were fed a complete pelleted feed in the morning and both pelleted feed and long-stemmed hay in the afternoon. Exercise consisted of 45 min on a mechanical walker followed by 45 min in a paddock with bare soil. Each stall was equipped with two untreated spruce boards during each period for wood chewing. Wood chewing was evaluated by videotaping each horse for 22 h during each period, determining the weight and volume of the boards before and after each period, and by visual appraisal of the boards. Intake of trace mineralized salt was also measured. Wood chewing occurred primarily between 2200 and 1200. All measures of wood chewing were correlated when totals for the entire 6 wk were analyzed. When analysis was performed on 2-wk values, videotape results were not correlated with volume or weight loss of boards. Horses chewed more when on the NE treatment (511 s/d) than when on AM or PM (57 and 136 s/d, respectively; P less than .05). Salt intake tended to be greater for NE than for the other treatments (P less than .10).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Address |
Dept. of Anim. Sci., University of Illinois, Urbana 61801 |
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| Language |
English |
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| ISSN |
0021-8812 |
ISBN |
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| Notes |
PMID:2061237 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
1949 |
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| Author |
Lee, P. |
| Title |
Adaptation to environmental change:an evolutionary perspective |
Type |
Book Chapter |
| Year |
1991 |
Publication |
Primate responses to environmental changes |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
39-56 |
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| Publisher |
Chapmann & Hall |
Place of Publication |
London |
Editor |
H. O. Box |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
6523 |
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| Author |
Lucas, Z.; Raeside, J.I.; Betteridge, K.J. |
| Title |
Non-invasive assessment of the incidences of pregnancy and pregnancy loss in the feral horses of Sable Island |
Type |
Journal Article |
| Year |
1991 |
Publication |
Journal of Reproduction and Fertility. Supplement |
Abbreviated Journal |
J Reprod Fertil Suppl |
| Volume |
44 |
Issue |
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Pages |
479-488 |
| Keywords |
Abortion, Veterinary/*epidemiology; Animals; Animals, Wild/*physiology; Atlantic Islands; Estrogens/analysis; Feces/chemistry; Female; Fertilization; Gestational Age; Horse Diseases/*epidemiology; Horses; Incidence; Pregnancy; *Pregnancy, Animal |
| Abstract |
Field observations of 400 totally unmanaged feral horses on Sable Island, Nova Scotia, were complemented by oestrogen determinations in faecal samples from 154 identified females over a 4-year period (454 mare-years). Of mares that were sampled throughout the year and subsequently produced foals, 92.1% exhibited elevated faecal oestrogens between 15 October and 30 March. The results confirm that faecal oestrogens are a useful indicator of pregnancy after approximately 120 days gestation. Distribution of foaling resembled that seen in other feral populations, with 95% of births occurring from April through July. The foaling rate for mares aged 3 years or older was 62.0%, with 50.7% of mares foaling in 3 or 4 years. Foaling rates were low (4.1%) in mares bred as yearlings and rose with age to 70.8% in those bred as 4-year-olds. Fetal loss after Day 120 was deduced from faecal oestrogens to be 26.0% overall, with marked variation from year to year (9.6-37.3%) and with age (70.0% in those bred as yearlings, decreasing to 5.6% in those bred as 4-year-olds). Of 58 mares aged 2 years or older that were sampled every year, about half (49.6%) the barren years were attributable to fetal loss after 120 days gestation. All mares conceived in at least 2 of the 4 years, suggesting that pregnancy loss, even after Day 120, is as important as failure to conceive in causing barren years. |
| Address |
Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Canada |
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English |
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| ISSN |
0449-3087 |
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| Notes |
PMID:1795292 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2247 |
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| Author |
Luescher, U.A.; McKeown, D.B.; Halip, J. |
| Title |
Reviewing the causes of obsessive-compulsive disorders in horses |
Type |
Journal Article |
| Year |
1991 |
Publication |
Vet. Med. |
Abbreviated Journal |
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| Volume |
86 |
Issue |
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Pages |
527-530 |
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| Notes |
Cited By (since 1996): 17; Export Date: 21 October 2008 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4526 |
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| Author |
Mal, M.E.; Friend, T.H.; Lay, D.C.; Vogelsang, S.G.; Jenkins, O.C. |
| Title |
Behavioral responses of mares to short-term confinement and social isolation |
Type |
Journal Article |
| Year |
1991 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
31 |
Issue |
1-2 |
Pages |
13-24 |
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| Abstract |
Thirty-six mares, blocked by age and temperament score, were assigned to one of three treatment groups: pasture (P); confinement stalls (C), allowing social contact; isolation stalls (ISS), allowing no contact with conspecifics. After 48 h on treatment, the mares were observed in situ for 1 h. Medium temperament and highly reactive ISS mares spent more time eating grain (P<0.01) and exhibited more grain-eating bouts (P<0.03) than P and C mares. Calm P mares had longer forage-eating bouts than C and ISS mares (P<0.02). During a 15 min open-field test in a 23 m x 23 m pen after 72 h on treatment, ISS mares traveled farther (P<0.005) than C and P mares, spent more total time trotting (P<0.01) than C and P mares, and exhibited a greater number of trotting bouts (P<0.01) than both C and P mares. Isolated mares spent less total time standing during the open-field test than C (P<0.05) and P (P<0.01) mares, but exhibited a greater number of standing bouts than C (P<0.05) and P (P<0.01) mares. Isolated mares also exhibited a greater number of total activity bouts (P<0.01) during the open-field test than both C and P mares; P mares also exhibited fewer activity bouts than C mares (P<0.1). Results indicate that mares kept in confined and isolated environments showed greater motivation for movement and performance of a greater number of activities than those maintained on pasture with conspecifics. |
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| ISSN |
0168-1591 |
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Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4820 |
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| Author |
Marean, C.W.; Gifford-Gonzalez, D. |
| Title |
Late Quaternary extinct ungulates of East Africa and palaeoenvironmental implications |
Type |
Journal Article |
| Year |
1991 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
350 |
Issue |
6317 |
Pages |
418-420 |
| Keywords |
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| Abstract |
UNGULATE communities of two East African savannas, the Serengeti and Athi-Kapiti Plains, are dominated by wildebeest (Connochaetes taurinus) supplemented by zebra (Equus burchelli), topi (Damaliscus lunatus), hartebeest (Alcelaphus buselaphus), buffalo (Syncerus caffer) eland (Taurotragus oryx) and gazelles (Gazella grand and G. thomsoni)1-3. Before this research, little was known of East African large mammal communities in the Late Pleistocene and early to middle Holocene. We document an extinct impala-sized alcelaphine antelope that is numerically dominant in Late Pleistocene archaeofaunal assemblages from the Athi-Kapiti Plains. The extinct giant buffalo Pelorovis antiquus is present, and a number of arid-adapted regionally extinct species are common. The small alcelaphine is rare in northern Tanzania, but regionally extinct arid-adapted species are present in Late Pleistocene deposits. These data indicate that as recently as 12,000 years ago, the large mammal community structure of East African savannas was very different and dry grasslands and arid-adapted ungulates expanded at least as far south as northern Tanzania during the Last Glacial Maximum. |
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| Notes |
10.1038/350418a0 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2345 |
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| Author |
Marinier, S.L.; Alexander, A.J. |
| Title |
Selective grazing behaviour in horses: development of methodology and preliminary use of tests to measure individual grazing ability |
Type |
Journal Article |
| Year |
1991 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
30 |
Issue |
3-4 |
Pages |
203-221 |
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| Abstract |
Methods are described to assess horses' selective grazing ability that includes choosing, sorting and the adaptive value of this behaviour. Choosing ability was tested by the experimenter presenting pairs of cut plant species that were then alternated at each presentation until the test horse had taken three bites of one of the plant pair. The results were analysed in relation to five measures of choosing behaviour: (1) the strength of the choice; (2) correspondence between first bite and the final choice; (3) constancy of the choice over a number of trials; (4) the comparison of the horses' ranking of the species over a number of trials; (5) the constancy of the linear arrangement of the plants over a number of trials. Sorting ability was tested using two methods. A mixture of two plant species was presented either in a clamp or loose in a trough. Results were based on number and weight of plant residues. The adaptive value of the behaviour related to the bitterness of toxic plants. This bitterness was represented in testing by quinine sulphate and a poisonous Senecio species. An extremely bitter substance “Bitrex” was also used in this context but was totally accepted by the horses. The horses' reactions to these substances were monitored using a behavioural score chart. The results from 12 horses revealed that the horses differed individually in their grazing ability. On this basis, the horses were classified as efficient, semi-efficient, or inefficient grazers. This finding has practical implications in deciding which horses may safely graze on pastures infested with toxic plants. |
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no |
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Equine Behaviour @ team @ |
Serial |
4230 |
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| Author |
McDonnell, S.M.; Henry,M. Bristol, F. |
| Title |
Spontaneous erection and masturbation in equids Proc 35th |
Type |
Journal Article |
| Year |
1991 |
Publication |
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Abbreviated Journal |
J. Reprod. Fert. Suppl |
| Volume |
44 |
Issue |
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Pages |
664-665 |
| Keywords |
Horse; Masturbation; Erection; Aversive conditioning; Sexual behavior; Ejaculation; Semen |
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| Notes |
This paper is part of the special issue entitled “Proceedings of the 4th International Symposium on Stallion Reproduction”, Guest Edited by Dr. Edward Squires. |
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no |
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Serial |
1378 |
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| Author |
Mills, G. |
| Title |
Kalahari Hyenas |
Type |
Miscellaneous |
| Year |
1991 |
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no |
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Equine Behaviour @ team @ |
Serial |
4884 |
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