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Author  |
Chmel, L.; Hasilikova, A.; Hrasko, J.; Vlacilikova, A. | ||||
| Title | The influence of some ecological factors on keratinophilic fungi in the soil | Type | Journal Article | ||
| Year | 1972 | Publication | Sabouraudia | Abbreviated Journal | Sabouraudia |
| Volume | 10 | Issue | 1 | Pages | 26-34 |
| Keywords | Animals; Arthrodermataceae/growth & development/isolation & purification/metabolism; Carbohydrates; Czechoslovakia; Ecology; Fungi/growth & development/*isolation & purification/metabolism; Hair; Horses; Humic Substances; Humidity; Keratins/metabolism; Microsporum/isolation & purification; Mitosporic Fungi/isolation & purification; Phosphates; Seasons; Soil; *Soil Microbiology; Species Specificity; Temperature; Trichophyton/isolation & purification | ||||
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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 | 0036-2174 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:5063162 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2719 | ||
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| Author |
Brinkmann, L.; Gerken, M.; Riek, A. | ||||
| Title | Energetic adaptations of Shetland pony mares | Type | Conference Article | ||
| Year | 2015 | Publication | Proceedings of the 3. International Equine Science Meeting | Abbreviated Journal | Proc. 3. Int. Equine. Sci. Mtg |
| Volume | Issue | Pages | |||
| Keywords | Body temperature, Energy expenditure, Food restriction, Hypometabolism, Locomotor activity, Shetland pony | ||||
| Abstract | Recent results suggest that wild Northern herbivores exhibit signs of a hypometabolism during times of low ambient temperature and food shortage in order to reduce their energetic needs. However, there are speculations that domestic animals lost the ability to reduce energy expenditure. To examine energetic and behavioural responses 10 Shetland pony mares were exposed to different environmental conditions (summer and winter). During winter ponies were allocated into two groups receiving two different food quantities (60% and 100% of maintenance energy requirement). We measured the field metabolic rate, water turn over, body temperature, locomotor activity, lying time, resting heart rate, body mass and body condition score. In summer, the field metabolic rate of all ponies (FMR; 63.4±15.0 MJ/day) was considerably higher compared with food restricted and control animals in winter (24.6±7.8 and 15.0±1.1 MJ/day, respectively). Furthermore, during summer, locomotor activity, resting heart rate and total water turnover were significantly elevated (P<0.001) compared with winter. Animals receiving a reduced amount of food (N=5) reduced their FMR by 26% compared with control animals (N=5) to compensate for the decreased energy supply. Furthermore, resting heart rate, body mass and body condition score were lower(29.2±2.7 beats/min, 140±22 kg and 3.0±1.0 points, respectively) than in control animals (36.8±41 beats/min, 165±31 kg, 4.4±0.7 points; P<0.05). While no difference could be found in the observed behaviour, nocturnal hypothermia was elevated in restrictively fed animals. Our results indicate that ponies adapt to different climatic conditions by changing their metabolic rate, behaviour and some physiological parameters. When exposed to energy shortage, ponies, like wild herbivores, exhibited hypometabolism and nocturnal hypothermia. Keywords: Body temperature, Energy expenditure, Food restriction, Hypometabolism, Locomotor activity, Shetland pony |
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| Corporate Author | Brinkmann, L. | Thesis | |||
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| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5893 | ||
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| Author |
Bayley, P.; Martin, S.; Anson, M. | ||||
| Title | Temperature-jump circular dichroism: observation of chiroptical relaxation processes at millisecond time resolution | Type | Journal Article | ||
| Year | 1975 | Publication | Biochemical and Biophysical Research Communications | Abbreviated Journal | Biochem Biophys Res Commun |
| Volume | 66 | Issue | 1 | Pages | 303-308 |
| Keywords | *Alcohol Oxidoreductases/metabolism; Animals; Circular Dichroism; Horses; Kinetics; Liver/enzymology; Mathematics; Protein Conformation; Temperature; Time Factors | ||||
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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 | 0006-291X | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:1172440 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3816 | ||
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| Author |
Ballew, R.M.; Sabelko, J.; Gruebele, M. | ||||
| Title | Direct observation of fast protein folding: the initial collapse of apomyoglobin | Type | Journal Article | ||
| Year | 1996 | Publication | Proceedings of the National Academy of Sciences of the United States of America | Abbreviated Journal | Proc. Natl. Acad. Sci. U.S.A. |
| Volume | 93 | Issue | 12 | Pages | 5759-5764 |
| Keywords | Animals; Apoproteins/*chemistry; Circular Dichroism; Horses; Kinetics; Muscle, Skeletal/chemistry; Myoglobin/*chemistry; *Protein Folding; Spectrometry, Fluorescence; Spectrophotometry, Infrared; Temperature | ||||
| Abstract | The rapid refolding dynamics of apomyoglobin are followed by a new temperature-jump fluorescence technique on a 15-ns to 0.5-ms time scale in vitro. The apparatus measures the protein-folding history in a single sweep in standard aqueous buffers. The earliest steps during folding to a compact state are observed and are complete in under 20 micros. Experiments on mutants and consideration of steady-state CD and fluorescence spectra indicate that the observed microsecond phase monitors assembly of an A x (H x G) helix subunit. Measurements at different viscosities indicate diffusive behavior even at low viscosities, in agreement with motions of a solvent-exposed protein during the initial collapse. | ||||
| Address | School of Chemical Sciences and Beckman Institute for Advanced Science and Technology, University of Illinois, Urbana, 61801, USA | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0027-8424 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:8650166 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3798 | ||
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| Author |
Balakrishnan, G.; Hu, Y.; Spiro, T.G. | ||||
| Title | Temperature-jump apparatus with Raman detection based on a solid-state tunable (1.80-2.05 microm) kHz optical parametric oscillator laser | Type | Journal Article | ||
| Year | 2006 | Publication | Applied Spectroscopy | Abbreviated Journal | Appl Spectrosc |
| Volume | 60 | Issue | 4 | Pages | 347-351 |
| Keywords | Animals; Cytochromes c/analysis; Horses; Lasers; Myoglobin/metabolism; Spectrum Analysis, Raman/*instrumentation/*methods; *Temperature | ||||
| Abstract | The operating characteristics of a pulsed (10 ns) tunable near-infrared (NIR) laser source are described for temperature-jump (T-jump) applications. A Q-switched Nd:YLF laser (approximately 10 ns pulses) with a 1 kHz repetition rate is used to pump a potassium titanyl arsenate (KTA) crystal-based optical parametric oscillator (OPO), producing approximately 1 mJ NIR pulses that are tunable (1.80-2.05 microm) across the 1.9 microm vibrational overtone band of water. This T-jump source has been coupled to a deep ultraviolet (UV) probe laser for Raman studies of protein dynamics. T-jumps of up to 30 degrees C, as measured via the O-H stretching Raman band of water, are readily achieved. Application to cytochrome c unfolding is demonstrated. | ||||
| Address | Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0003-7028 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:16613628 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 3764 | ||
| Permanent link to this record | |||||
| Author |
Arnold, W.; Ruf, T.; Kuntz, R. | ||||
| Title | Seasonal adjustment of energy budget in a large wild mammal, the Przewalski horse (Equus ferus przewalskii) II. Energy expenditure | Type | Journal Article | ||
| Year | 2006 | Publication | The Journal of experimental biology | Abbreviated Journal | J Exp Biol |
| Volume | 209 | Issue | Pt 22 | Pages | 4566-4573 |
| Keywords | Animals; Animals, Wild/*physiology; Body Temperature; Body Temperature Regulation; Eating; *Energy Metabolism; Female; Heart Rate; Horses/*physiology; Male; Motor Activity; Pregnancy; Reproduction; *Seasons | ||||
| Abstract | Many large mammals show pronounced seasonal fluctuations of metabolic rate (MR). It has been argued, based on studies in ruminants, that this variation merely results from different levels of locomotor activity (LA), and heat increment of feeding (HI). However, a recent study in red deer (Cervus elaphus) identified a previously unknown mechanism in ungulates--nocturnal hypometabolism--that contributed significantly to reduced energy expenditure, mainly during late winter. The relative contribution of these different mechanisms to seasonal adjustments of MR is still unknown, however. Therefore, in the study presented here we quantified for the first time the independent contribution of thermoregulation, LA and HI to heart rate (f(H)) as a measure of MR in a free-roaming large ungulate, the Przewalski horse or Takhi (Equus ferus przewalskii Poljakow). f(H) varied periodically throughout the year with a twofold increase from a mean of 44 beats min(-1) during December and January to a spring peak of 89 beats min(-1) at the beginning of May. LA increased from 23% per day during December and January to a mean level of 53% per day during May, and declined again thereafter. Daily mean subcutaneous body temperature (T(s)) declined continuously during winter and reached a nadir at the beginning of April (annual range was 5.8 degrees C), well after the annual low of air temperature and LA. Lower T(s) during winter contributed considerably to the reduction in f(H). In addition to thermoregulation, f(H) was affected by reproduction, LA, HI and unexplained seasonal variation, presumably reflecting to some degree changes in organ mass. The observed phase relations of seasonal changes indicate that energy expenditure was not a consequence of energy uptake but is under endogenous control, preparing the organism well in advance of seasonal energetic demands. | ||||
| Address | Research Institute of Wildlife Ecology, University of Veterinary Medicine, Vienna, Savoyenstrasse 1, 1160 Vienna, Austria. walter.arnold@vu-wien.ac.at | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0022-0949 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:17079726 | Approved | no | ||
| Call Number | Serial | 1782 | |||
| Permanent link to this record | |||||