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Author  |
Zolovick, A.; Upson, D.W.; Eleftheriou, B.E. |
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Title |
Diurnal Variation In Plasma Glucocorticosteroid Levels In The Horse (Equus Caballus) |
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Year |
1966 |
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Journal of Endocrinology |
Abbreviated Journal |
J. Endocrinol. |
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35 |
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3 |
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249-253 |
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Thin-layer chromatography, acetylation of reference and unidentified glucocorticosteroids, u.v. absorption and fluorescence induced in sulphuric acid were used to identify cortisol as the major free plasma glucocorticosteroid in the horse (Equus caballus), with cortisone and corticosterone as minor glucocorticosteroids. Deoxycorticosterone was also identified. The plasma ratio for free cortisol: cortisone: corticosterone was 16:8:0·5.The diurnal variation was determined for all three glucocorticosteroids. The highest levels of cortisol and corticosterone were found at 10.00 hr. (260 and 10·3 μg./100 ml., respectively) and the lowest concentration of cortisol at 02.00 hr. The highest level of cortisone occurred at 02.00 hr. (140 μg./100 ml.), and the lowest appeared at 16.00 hr. (65 μg./100 ml.). The maximum plasma concentration of the combined glucocorticosteroids was found at 10.00 hr. (395·3 μg./100 ml.), and the minimum at 20.00 hr. (219 μg./100 ml.). |
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10.1677/joe.0.0350249 |
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Equine Behaviour @ team @ |
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5591 |
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Author |
Willoughby Dp, |
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Title |
The vanished quagga |
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Year |
1966 |
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J Amer Mus Nat Hist |
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75 |
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60-64 |
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from Professor Hans Klingels Equine Reference List |
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1711 |
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Author |
Tuijn P, |
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Title |
Historical notes on the quagga |
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1966 |
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Bijdragen tot de Dierkunde |
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36 |
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from Professor Hans Klingels Equine Reference List |
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1665 |
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Author |
Thenius E, |
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Title |
Die Vorgeschichte der Einhufer |
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1966 |
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Z Säugetierk |
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31 |
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from Professor Hans Klingels Equine Reference List |
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1647 |
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Author |
Singer R, B.E. |
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Title |
Hipparion in Africa |
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Journal Article |
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Year |
1966 |
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Quarternaria |
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8 |
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187-191 |
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from Professor Hans Klingels Equine Reference List |
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1596 |
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Author |
Schuller L, |
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Title |
Bemerkungen zum habituellwerden mimischer Ausdruckserscheinungen bei Pferd und Hund |
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Journal Article |
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Year |
1966 |
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Abbreviated Journal |
Säugtierk Mitt |
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14 |
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19-22 |
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Notes |
from Professor Hans Klingels Equine Reference List |
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no |
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1580 |
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Author |
Schneider M,; Schneider R, |
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Title |
ZUr Kenntnis der innerartlichen Ausformung des Schmelzmusters bei Equidenzähnen |
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Journal Article |
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1966 |
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Zool Anz |
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176 |
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71-97 |
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from Professor Hans Klingels Equine Reference List |
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1575 |
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Author |
Richards, M.P.M. |
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Title |
Maternal behaviour in virgin female golden hamsters (Mesocricetus auratus waterhouse): the role of the age of the test pup |
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Journal Article |
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Year |
1966 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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14 |
Issue |
2-3 |
Pages |
303-309 |
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Summary One hundred and forty-four naive virgin female golden hamsters were each given a single 15 min test with three pups aged from day 1 (<24 hr) to day 18. A group of eight females was tested with each age of pup. Pups aged from day 1 to day 6 were generally attacked like prey, killed and eaten. Pups of intermediate age (day 6 to day 10) were usually initially attacked but this was often followed by maternal responses. The females', behaviour with the oldest pups suggested that they were being treated as strnge adult intruders. This result differs from that of a similar experiment with mice in which the youngest pups were found to be the most effective for eliciting materal responses. An explanation for this difference in terms of the evolutionary history of the golden hamster species is proposed. |
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2155 |
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Author |
Richards, M.P.M. |
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Title |
Maternal behaviour in the golden hamster: responsiveness to young in virgin, pregnant, and lactating females |
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Journal Article |
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1966 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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14 |
Issue |
2-3 |
Pages |
310-313 |
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Summary Three groups of eight female golden hamsters without prior breeding experience were presented with three newborn pups for a 15 min test period. Group V were virgin females, group P pregnant females and group L lactating females. Groups P and L were tested within 24 hr of parturition. Group V attacked and killed all pups presented. Group P showed maternal responses after initial attacks while group L accepted the pups. Groups P and L did not differ significantly on measures of maternal responsiveness but all three groups differed significantly from one another on measures of attacking behaviour and the eating of young. |
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2156 |
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Author |
Noirot, E.; Richards, M.P.M. |
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Title |
Maternal behaviour in virgin female golden hamsters: Changes consequent upon initial contact with pups |
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1966 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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14 |
Issue |
1 |
Pages |
7-10 |
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Summary Initial contact with pups of a certain age causes changes in virgin female hamsters' behaviour with pups of another age. This was shown by comparing the behaviour with 5-day-old pups in groups of naive (control) animals and of animals given one previous contact either with 1, 5 or 9-day-old pups. Maternal responses were more intense in the animals previously presented with 1 or 9-day-old pups than in the control animals. Attacking was increased after initial contact with 1-day-old pups and decreased after initial contact with 9-day-old pups. Animals presented twice with the same pattern did not show marked changes in either of the two activities. |
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2157 |
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