Methane emissions are lower from reindeer fed lichens compared to a concentrate feed
Methane emissions from reindeer ( Rangifer tarandus tarandus ) fed lichens (mainly Cladonia stellaris ) and a concentrate feed were determined using open-circuit respirometry. The lichen diet was low in crude protein (< 2.6% of dry matter [DM]), starch (6.0% DM) and acid detergent lignin (2.0% DM...
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ftjpolarres:oai:journals.openacademia.net:article/2644 2023-05-15T18:02:40+02:00 Methane emissions are lower from reindeer fed lichens compared to a concentrate feed Krarup Hansen, Kia Alterskjær Sundset, Monica Folkow, Lars P. Nilsen, Marte Mathiesen, Svein D. 2018-10-19 application/pdf application/xml https://polarresearch.net/index.php/polar/article/view/2644 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2644/6040 https://polarresearch.net/index.php/polar/article/view/2644/6041 https://polarresearch.net/index.php/polar/article/view/2644 Polar Research; Vol 37 (2018) 1751-8369 Respirometry dietary secondary compound energy loss Rangifer tarandus info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftjpolarres 2021-11-11T19:13:09Z Methane emissions from reindeer ( Rangifer tarandus tarandus ) fed lichens (mainly Cladonia stellaris ) and a concentrate feed were determined using open-circuit respirometry. The lichen diet was low in crude protein (< 2.6% of dry matter [DM]), starch (6.0% DM) and acid detergent lignin (2.0% DM) compared to the concentrate feed (12.7, 22.5 and 7.2% DM, respectively), and high in neutral detergent fibre (82.2% DM versus 34.8% DM in concentrate feed). The feeds were offered in equal amounts (ca. 0.440 kg DM) 2 h after initiating methane recordings in the respiration chamber. The reindeer were adapted to these diets for > 4 weeks prior to experiments and methane emissions recorded for two separate 23 h periods for each diet. Methane emissions increased on average by 0.93 g/h (or by 5.8 times) in the first hour after feeding the concentrate feed, while emissions remained unchanged after the intake of lichens. Mean methane emissions from reindeer (n = 5) were 7.5 ± 0.54 (SE) g CH 4 day −1 when fed lichens, compared to a higher emission ( p = 0.001) of 11.2 ± 0.54 g CH 4 day −1 on the concentrate diet. The mean proportion of gross energy intake lost as methane was 5.2 ± 0.37% on the lichens and 7.6 ± 0.37%, or some 50% higher, on the concentrate feed. This difference was significant ( p < 0.001). Our results suggest that it is of environmental importance to preserve the lichens on the tundra and minimize supplementary feeding with concentrate diets, in order to reduce methane emission. Article in Journal/Newspaper Polar Research Rangifer tarandus Tundra Polar Research (E-Journal) |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Respirometry dietary secondary compound energy loss Rangifer tarandus |
spellingShingle |
Respirometry dietary secondary compound energy loss Rangifer tarandus Krarup Hansen, Kia Alterskjær Sundset, Monica Folkow, Lars P. Nilsen, Marte Mathiesen, Svein D. Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
topic_facet |
Respirometry dietary secondary compound energy loss Rangifer tarandus |
description |
Methane emissions from reindeer ( Rangifer tarandus tarandus ) fed lichens (mainly Cladonia stellaris ) and a concentrate feed were determined using open-circuit respirometry. The lichen diet was low in crude protein (< 2.6% of dry matter [DM]), starch (6.0% DM) and acid detergent lignin (2.0% DM) compared to the concentrate feed (12.7, 22.5 and 7.2% DM, respectively), and high in neutral detergent fibre (82.2% DM versus 34.8% DM in concentrate feed). The feeds were offered in equal amounts (ca. 0.440 kg DM) 2 h after initiating methane recordings in the respiration chamber. The reindeer were adapted to these diets for > 4 weeks prior to experiments and methane emissions recorded for two separate 23 h periods for each diet. Methane emissions increased on average by 0.93 g/h (or by 5.8 times) in the first hour after feeding the concentrate feed, while emissions remained unchanged after the intake of lichens. Mean methane emissions from reindeer (n = 5) were 7.5 ± 0.54 (SE) g CH 4 day −1 when fed lichens, compared to a higher emission ( p = 0.001) of 11.2 ± 0.54 g CH 4 day −1 on the concentrate diet. The mean proportion of gross energy intake lost as methane was 5.2 ± 0.37% on the lichens and 7.6 ± 0.37%, or some 50% higher, on the concentrate feed. This difference was significant ( p < 0.001). Our results suggest that it is of environmental importance to preserve the lichens on the tundra and minimize supplementary feeding with concentrate diets, in order to reduce methane emission. |
format |
Article in Journal/Newspaper |
author |
Krarup Hansen, Kia Alterskjær Sundset, Monica Folkow, Lars P. Nilsen, Marte Mathiesen, Svein D. |
author_facet |
Krarup Hansen, Kia Alterskjær Sundset, Monica Folkow, Lars P. Nilsen, Marte Mathiesen, Svein D. |
author_sort |
Krarup Hansen, Kia |
title |
Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
title_short |
Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
title_full |
Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
title_fullStr |
Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
title_full_unstemmed |
Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
title_sort |
methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
publisher |
Norwegian Polar Institute |
publishDate |
2018 |
url |
https://polarresearch.net/index.php/polar/article/view/2644 |
genre |
Polar Research Rangifer tarandus Tundra |
genre_facet |
Polar Research Rangifer tarandus Tundra |
op_source |
Polar Research; Vol 37 (2018) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2644/6040 https://polarresearch.net/index.php/polar/article/view/2644/6041 https://polarresearch.net/index.php/polar/article/view/2644 |
_version_ |
1766173115541356544 |