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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Septentrio Academic Publishing
1995
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Online Access: | https://doi.org/10.7557/2.15.2.1168 https://doaj.org/article/954273ea9a374ee59faa7e0de7d5c2a6 |
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ftdoajarticles:oai:doaj.org/article:954273ea9a374ee59faa7e0de7d5c2a6 2023-05-15T18:04:00+02:00 Faeces is a reliable source of body water for measuring tritium in reindeer in summer and in winter Geir Gotaas Nicholas J.C. Tyler 1995-01-01T00:00:00Z https://doi.org/10.7557/2.15.2.1168 https://doaj.org/article/954273ea9a374ee59faa7e0de7d5c2a6 EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1168 https://doaj.org/toc/1890-6729 doi:10.7557/2.15.2.1168 1890-6729 https://doaj.org/article/954273ea9a374ee59faa7e0de7d5c2a6 Rangifer, Vol 15, Iss 2 (1995) reindeer tritium plasma rumen fluid isotope markers water turnover Animal culture SF1-1100 article 1995 ftdoajarticles https://doi.org/10.7557/2.15.2.1168 2022-12-31T12:05:49Z 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 Directory of Open Access Journals: DOAJ Articles Rangifer 15 2 63 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
reindeer tritium plasma rumen fluid isotope markers water turnover Animal culture SF1-1100 |
spellingShingle |
reindeer tritium plasma rumen fluid isotope markers water turnover Animal culture SF1-1100 Geir Gotaas Nicholas J.C. Tyler 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 Animal culture SF1-1100 |
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 |
Geir Gotaas Nicholas J.C. Tyler |
author_facet |
Geir Gotaas Nicholas J.C. Tyler |
author_sort |
Geir Gotaas |
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://doi.org/10.7557/2.15.2.1168 https://doaj.org/article/954273ea9a374ee59faa7e0de7d5c2a6 |
genre |
Rangifer |
genre_facet |
Rangifer |
op_source |
Rangifer, Vol 15, Iss 2 (1995) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1168 https://doaj.org/toc/1890-6729 doi:10.7557/2.15.2.1168 1890-6729 https://doaj.org/article/954273ea9a374ee59faa7e0de7d5c2a6 |
op_doi |
https://doi.org/10.7557/2.15.2.1168 |
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Rangifer |
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15 |
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2 |
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63 |
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