Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer
Microbial fermentation end products were investigated in Svalbard reindeer at two different locations, on Nordenskioldland (NL) (n=7) and in a marginal area on Nordaustlandet (NA) (n=11), at different seasons. The pH ranged from 6.51-6.70 in rumen contents and from 6.78-7.17 in the distal fermentati...
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Language: | English |
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Septentrio Academic Publishing
1997
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ftdoajarticles:oai:doaj.org/article:987fbfefc23b45908dd6d6f4da409e31 2023-05-15T17:24:13+02:00 Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer W. Sørmo Ø.E. Haga R.G. White S.D. Mathiesen 1997-02-01T00:00:00Z https://doi.org/10.7557/2.17.2.1355 https://doaj.org/article/987fbfefc23b45908dd6d6f4da409e31 EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1355 https://doaj.org/toc/1890-6729 doi:10.7557/2.17.2.1355 1890-6729 https://doaj.org/article/987fbfefc23b45908dd6d6f4da409e31 Rangifer, Vol 17, Iss 2 (1997) rumen physiology Svalbard reindeer Rangifer tarandus platyrhynchus volatile fatty acids energy production Animal culture SF1-1100 article 1997 ftdoajarticles https://doi.org/10.7557/2.17.2.1355 2022-12-31T03:17:48Z Microbial fermentation end products were investigated in Svalbard reindeer at two different locations, on Nordenskioldland (NL) (n=7) and in a marginal area on Nordaustlandet (NA) (n=11), at different seasons. The pH ranged from 6.51-6.70 in rumen contents and from 6.78-7.17 in the distal fermentation chamber (DFC=caecum and proximal part of the colon) on NL compared to 6.10-6.71 in rumen contents and 6.50-7.35 in DFC contents on NA. The ruminal volatile fatty acid concentration ([VFAJ) was 84.5 ± 9.5 mmol/l compared to 63-9 ± 17.6 mmol/kg in the DFC on NL in winter. In autumn, ruminal and DFC [VFA] was high at 113.5 ± 13.0 mmol/l and 90.4 ± 10.9 mmol/kg, respectively. On NA ruminal [VFA] was 85.7 ± 12.4 mmol/l and 59-6 ± 1.3 mmol/kg in the DFC in winter, compared to 107.3 ± 18.4 mmol/l and 102.0 ± 12.7 mmol/kg in rumen and DFC, respectively, in summer. Mean acetate/propionate (A/P) ratios in the rumen indicate fermentation in favour of plant fibre digestion in winter (4.8) but not in autumn (3.0) on NL. On NA, the mean A/P ratio was 5.1 in winter, compared to 4.6 in summer. In all DFC investigated the A/P ratio was higher than 8.9. The initial ruminal [VFA] did not reflect the VFA production measured. On NL, the production rate of VFA was low or not detectable in rumen and DFC in winter, while in autumn the total production rate of VFA was 59.3 kJ/kgW0 75/d, of which 6.5% originated from the DFC. On NA in winter, a total of 121.3 kJ/kgW0 7S/d was estimated of which 17% originated from the DFC, compared to a total of 380.4 kj/kgW0.75/d in summer where the DFC only contributed 2.7%. Plants (grasses and mosses) with low quality in winter do not seem to contribute significantly to the VFA production in rumen and DFC. VFA production in the DFC seems to be of significant importance in reindeer when pastures have low availability but high quality. The concenttation and the rate of VFA production in the DFC contents were not related to the size of the chamber, but to the diet eaten. Article in Journal/Newspaper Nordaustlandet Nordenskioldland Rangifer Rangifer tarandus Rangifer tarandus platyrhynchus Svalbard svalbard reindeer Directory of Open Access Journals: DOAJ Articles Nordaustlandet ENVELOPE(22.400,22.400,79.800,79.800) Svalbard Rangifer 17 2 81 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
rumen physiology Svalbard reindeer Rangifer tarandus platyrhynchus volatile fatty acids energy production Animal culture SF1-1100 |
spellingShingle |
rumen physiology Svalbard reindeer Rangifer tarandus platyrhynchus volatile fatty acids energy production Animal culture SF1-1100 W. Sørmo Ø.E. Haga R.G. White S.D. Mathiesen Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer |
topic_facet |
rumen physiology Svalbard reindeer Rangifer tarandus platyrhynchus volatile fatty acids energy production Animal culture SF1-1100 |
description |
Microbial fermentation end products were investigated in Svalbard reindeer at two different locations, on Nordenskioldland (NL) (n=7) and in a marginal area on Nordaustlandet (NA) (n=11), at different seasons. The pH ranged from 6.51-6.70 in rumen contents and from 6.78-7.17 in the distal fermentation chamber (DFC=caecum and proximal part of the colon) on NL compared to 6.10-6.71 in rumen contents and 6.50-7.35 in DFC contents on NA. The ruminal volatile fatty acid concentration ([VFAJ) was 84.5 ± 9.5 mmol/l compared to 63-9 ± 17.6 mmol/kg in the DFC on NL in winter. In autumn, ruminal and DFC [VFA] was high at 113.5 ± 13.0 mmol/l and 90.4 ± 10.9 mmol/kg, respectively. On NA ruminal [VFA] was 85.7 ± 12.4 mmol/l and 59-6 ± 1.3 mmol/kg in the DFC in winter, compared to 107.3 ± 18.4 mmol/l and 102.0 ± 12.7 mmol/kg in rumen and DFC, respectively, in summer. Mean acetate/propionate (A/P) ratios in the rumen indicate fermentation in favour of plant fibre digestion in winter (4.8) but not in autumn (3.0) on NL. On NA, the mean A/P ratio was 5.1 in winter, compared to 4.6 in summer. In all DFC investigated the A/P ratio was higher than 8.9. The initial ruminal [VFA] did not reflect the VFA production measured. On NL, the production rate of VFA was low or not detectable in rumen and DFC in winter, while in autumn the total production rate of VFA was 59.3 kJ/kgW0 75/d, of which 6.5% originated from the DFC. On NA in winter, a total of 121.3 kJ/kgW0 7S/d was estimated of which 17% originated from the DFC, compared to a total of 380.4 kj/kgW0.75/d in summer where the DFC only contributed 2.7%. Plants (grasses and mosses) with low quality in winter do not seem to contribute significantly to the VFA production in rumen and DFC. VFA production in the DFC seems to be of significant importance in reindeer when pastures have low availability but high quality. The concenttation and the rate of VFA production in the DFC contents were not related to the size of the chamber, but to the diet eaten. |
format |
Article in Journal/Newspaper |
author |
W. Sørmo Ø.E. Haga R.G. White S.D. Mathiesen |
author_facet |
W. Sørmo Ø.E. Haga R.G. White S.D. Mathiesen |
author_sort |
W. Sørmo |
title |
Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer |
title_short |
Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer |
title_full |
Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer |
title_fullStr |
Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer |
title_full_unstemmed |
Comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in Svalbard reindeer |
title_sort |
comparative aspects of volatile fatty acid production in the rumen and distal fermentation chamber in svalbard reindeer |
publisher |
Septentrio Academic Publishing |
publishDate |
1997 |
url |
https://doi.org/10.7557/2.17.2.1355 https://doaj.org/article/987fbfefc23b45908dd6d6f4da409e31 |
long_lat |
ENVELOPE(22.400,22.400,79.800,79.800) |
geographic |
Nordaustlandet Svalbard |
geographic_facet |
Nordaustlandet Svalbard |
genre |
Nordaustlandet Nordenskioldland Rangifer Rangifer tarandus Rangifer tarandus platyrhynchus Svalbard svalbard reindeer |
genre_facet |
Nordaustlandet Nordenskioldland Rangifer Rangifer tarandus Rangifer tarandus platyrhynchus Svalbard svalbard reindeer |
op_source |
Rangifer, Vol 17, Iss 2 (1997) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1355 https://doaj.org/toc/1890-6729 doi:10.7557/2.17.2.1355 1890-6729 https://doaj.org/article/987fbfefc23b45908dd6d6f4da409e31 |
op_doi |
https://doi.org/10.7557/2.17.2.1355 |
container_title |
Rangifer |
container_volume |
17 |
container_issue |
2 |
container_start_page |
81 |
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1766115153551556608 |