Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter
Rates of equilibration and subsequent wash-out of tritium were measured in parallel samples of blood, rumen fluid and faeces collected from two adult female Norwegian reindeer in summer and in winter. The tritium-concentration was the same in all three body water compartments after no more than 9 h...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Septentrio Academic Publishing
1995
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Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/1168 https://doi.org/10.7557/2.15.2.1168 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1168 2023-05-15T18:03:54+02:00 Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter Gotaas, Geir Tyler, Nicholas J.C. 1995-01-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/1168 https://doi.org/10.7557/2.15.2.1168 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1168/1110 https://septentrio.uit.no/index.php/rangifer/article/view/1168 doi:10.7557/2.15.2.1168 Copyright (c) 2015 Geir Gotaas, Nicholas J.C. Tyler http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 15 Nr 2 (1995); 63-70 Rangifer; Vol 15 No 2 (1995); 63-70 1890-6729 reindeer tritium plasma rumen fluid isotope markers water turnover seasonal physiology info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1995 ftunitroemsoe https://doi.org/10.7557/2.15.2.1168 2021-08-16T14:51:42Z Rates of equilibration and subsequent wash-out of tritium were measured in parallel samples of blood, rumen fluid and faeces collected from two adult female Norwegian reindeer in summer and in winter. The tritium-concentration was the same in all three body water compartments after no more than 9 h following both intravenous and intra-ruminal injection of isotope in summer and following intravenous injection of isotope in winter. The biological half-life of the tritium increased from approximately 3 days in summer to approximately 10 days in winter, probably as a consequence of a decrease in water intake. There were no significant differences in disappearance rates of tritium from blood, rumen fluid and faeces within any of the six experiments. Fresh faeces is therefore a reliable source of body water that can be used in place of blood in studies of body water kinetics in reindeer, thus making it potentially possible to conduct such studies on truly free-living and undisturbed animals. Article in Journal/Newspaper Rangifer University of Tromsø: Septentrio Academic Publishing Rangifer 15 2 63 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
reindeer tritium plasma rumen fluid isotope markers water turnover seasonal physiology |
spellingShingle |
reindeer tritium plasma rumen fluid isotope markers water turnover seasonal physiology Gotaas, Geir Tyler, Nicholas J.C. Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
topic_facet |
reindeer tritium plasma rumen fluid isotope markers water turnover seasonal physiology |
description |
Rates of equilibration and subsequent wash-out of tritium were measured in parallel samples of blood, rumen fluid and faeces collected from two adult female Norwegian reindeer in summer and in winter. The tritium-concentration was the same in all three body water compartments after no more than 9 h following both intravenous and intra-ruminal injection of isotope in summer and following intravenous injection of isotope in winter. The biological half-life of the tritium increased from approximately 3 days in summer to approximately 10 days in winter, probably as a consequence of a decrease in water intake. There were no significant differences in disappearance rates of tritium from blood, rumen fluid and faeces within any of the six experiments. Fresh faeces is therefore a reliable source of body water that can be used in place of blood in studies of body water kinetics in reindeer, thus making it potentially possible to conduct such studies on truly free-living and undisturbed animals. |
format |
Article in Journal/Newspaper |
author |
Gotaas, Geir Tyler, Nicholas J.C. |
author_facet |
Gotaas, Geir Tyler, Nicholas J.C. |
author_sort |
Gotaas, Geir |
title |
Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
title_short |
Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
title_full |
Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
title_fullStr |
Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
title_full_unstemmed |
Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
title_sort |
faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter |
publisher |
Septentrio Academic Publishing |
publishDate |
1995 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/1168 https://doi.org/10.7557/2.15.2.1168 |
genre |
Rangifer |
genre_facet |
Rangifer |
op_source |
Rangifer; Årg 15 Nr 2 (1995); 63-70 Rangifer; Vol 15 No 2 (1995); 63-70 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1168/1110 https://septentrio.uit.no/index.php/rangifer/article/view/1168 doi:10.7557/2.15.2.1168 |
op_rights |
Copyright (c) 2015 Geir Gotaas, Nicholas J.C. Tyler http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.15.2.1168 |
container_title |
Rangifer |
container_volume |
15 |
container_issue |
2 |
container_start_page |
63 |
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1766175014130810880 |