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) c...
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Norwegian Polar Institute
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ftdoajarticles:oai:doaj.org/article:4d52fccba0264df3965e39d42d9e1648 2023-05-15T18:02:40+02:00 Methane emissions are lower from reindeer fed lichens compared to a concentrate feed Kia Krarup Hansen Monica Alterskjær Sundset Lars P. Folkow Marte Nilsen Svein D. Mathiesen 2018-01-01T00:00:00Z https://doi.org/10.1080/17518369.2018.1505396 https://doaj.org/article/4d52fccba0264df3965e39d42d9e1648 EN eng Norwegian Polar Institute http://dx.doi.org/10.1080/17518369.2018.1505396 https://doaj.org/toc/1751-8369 1751-8369 doi:10.1080/17518369.2018.1505396 https://doaj.org/article/4d52fccba0264df3965e39d42d9e1648 Polar Research, Vol 37, Iss 1 (2018) Respirometry dietary secondary compounds energy loss Rangifer tarandus Environmental sciences GE1-350 Oceanography GC1-1581 article 2018 ftdoajarticles https://doi.org/10.1080/17518369.2018.1505396 2022-12-31T12:10:17Z 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 CH4 day−1 when fed lichens, compared to a higher emission (p = 0.001) of 11.2 ± 0.54 g CH4 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 Directory of Open Access Journals: DOAJ Articles Polar Research 37 1 1505396 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Respirometry dietary secondary compounds energy loss Rangifer tarandus Environmental sciences GE1-350 Oceanography GC1-1581 |
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Respirometry dietary secondary compounds energy loss Rangifer tarandus Environmental sciences GE1-350 Oceanography GC1-1581 Kia Krarup Hansen Monica Alterskjær Sundset Lars P. Folkow Marte Nilsen Svein D. Mathiesen Methane emissions are lower from reindeer fed lichens compared to a concentrate feed |
topic_facet |
Respirometry dietary secondary compounds energy loss Rangifer tarandus Environmental sciences GE1-350 Oceanography GC1-1581 |
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 CH4 day−1 when fed lichens, compared to a higher emission (p = 0.001) of 11.2 ± 0.54 g CH4 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 |
Kia Krarup Hansen Monica Alterskjær Sundset Lars P. Folkow Marte Nilsen Svein D. Mathiesen |
author_facet |
Kia Krarup Hansen Monica Alterskjær Sundset Lars P. Folkow Marte Nilsen Svein D. Mathiesen |
author_sort |
Kia Krarup Hansen |
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://doi.org/10.1080/17518369.2018.1505396 https://doaj.org/article/4d52fccba0264df3965e39d42d9e1648 |
genre |
Polar Research Rangifer tarandus Tundra |
genre_facet |
Polar Research Rangifer tarandus Tundra |
op_source |
Polar Research, Vol 37, Iss 1 (2018) |
op_relation |
http://dx.doi.org/10.1080/17518369.2018.1505396 https://doaj.org/toc/1751-8369 1751-8369 doi:10.1080/17518369.2018.1505396 https://doaj.org/article/4d52fccba0264df3965e39d42d9e1648 |
op_doi |
https://doi.org/10.1080/17518369.2018.1505396 |
container_title |
Polar Research |
container_volume |
37 |
container_issue |
1 |
container_start_page |
1505396 |
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