Failure of cellulolysis in the rumen of reindeer fed timothy silage
Three male reindeer (Rangifer tarandus tarandus) calves were brought from mountain pastures in April and fed regrowth timothy (Phleum pratense) silage with 76% leaves and 24.0% dry matter (DM) ad libitum. The silage contained (on DM basis) 25.4% cellulose, 12.0% crude protein and 19-6% water soluble...
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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/1170 https://doi.org/10.7557/2.15.2.1170 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1170 2023-05-15T18:03:54+02:00 Failure of cellulolysis in the rumen of reindeer fed timothy silage Olsen, Monica A. Aagnes, Tove H. Mathiesen, Svein D. 1995-01-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/1170 https://doi.org/10.7557/2.15.2.1170 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1170/1112 https://septentrio.uit.no/index.php/rangifer/article/view/1170 doi:10.7557/2.15.2.1170 Copyright (c) 2015 Monica A. Olsen, Tove H. Aagnes, Svein D. Mathiesen http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 15 Nr 2 (1995); 79-86 Rangifer; Vol 15 No 2 (1995); 79-86 1890-6729 Rangifer digestion grass silage reindeer cellulolysis timothy silage info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1995 ftunitroemsoe https://doi.org/10.7557/2.15.2.1170 2021-08-16T14:51:42Z Three male reindeer (Rangifer tarandus tarandus) calves were brought from mountain pastures in April and fed regrowth timothy (Phleum pratense) silage with 76% leaves and 24.0% dry matter (DM) ad libitum. The silage contained (on DM basis) 25.4% cellulose, 12.0% crude protein and 19-6% water soluble carbohydrates. After an initial period of 11 days the daily silage intake rose to almost similar values for all animals, but independently of food intake, body mass (BM) increased by as much as 13.3 kg for animal R3 during the first 21 days, compared to 4.4 kg and 2.8 kg for Rl and R2, respectively. At slaughter the wet weight of the rumen contents of animal R3 constituted 30.2% of the total BM, compared to 18.5% and 19.1% in animals Rl and R2, respectively. A reduced ability of the rumen micro-biota to ferment pure cellulose in vitro was observed in R3. The ruminal pH was 7.07 and the concentration of volatile fatty acids was only 50.0 mM in R3, indicating a low rate of fermentation. The initial rates of in vitro dry matter digestibility of timothy silage and standard hay were also affected by the rumen fermentation failure in animal R3. Depressed rumen cellulolysis, which may be related to natural periods of starvation prior to the feeding experiment, could have caused the low rate of fermentation and the large rumen size observed in this animal. Article in Journal/Newspaper Rangifer Rangifer tarandus University of Tromsø: Septentrio Academic Publishing Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Rangifer 15 2 79 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
Rangifer digestion grass silage reindeer cellulolysis timothy silage |
spellingShingle |
Rangifer digestion grass silage reindeer cellulolysis timothy silage Olsen, Monica A. Aagnes, Tove H. Mathiesen, Svein D. Failure of cellulolysis in the rumen of reindeer fed timothy silage |
topic_facet |
Rangifer digestion grass silage reindeer cellulolysis timothy silage |
description |
Three male reindeer (Rangifer tarandus tarandus) calves were brought from mountain pastures in April and fed regrowth timothy (Phleum pratense) silage with 76% leaves and 24.0% dry matter (DM) ad libitum. The silage contained (on DM basis) 25.4% cellulose, 12.0% crude protein and 19-6% water soluble carbohydrates. After an initial period of 11 days the daily silage intake rose to almost similar values for all animals, but independently of food intake, body mass (BM) increased by as much as 13.3 kg for animal R3 during the first 21 days, compared to 4.4 kg and 2.8 kg for Rl and R2, respectively. At slaughter the wet weight of the rumen contents of animal R3 constituted 30.2% of the total BM, compared to 18.5% and 19.1% in animals Rl and R2, respectively. A reduced ability of the rumen micro-biota to ferment pure cellulose in vitro was observed in R3. The ruminal pH was 7.07 and the concentration of volatile fatty acids was only 50.0 mM in R3, indicating a low rate of fermentation. The initial rates of in vitro dry matter digestibility of timothy silage and standard hay were also affected by the rumen fermentation failure in animal R3. Depressed rumen cellulolysis, which may be related to natural periods of starvation prior to the feeding experiment, could have caused the low rate of fermentation and the large rumen size observed in this animal. |
format |
Article in Journal/Newspaper |
author |
Olsen, Monica A. Aagnes, Tove H. Mathiesen, Svein D. |
author_facet |
Olsen, Monica A. Aagnes, Tove H. Mathiesen, Svein D. |
author_sort |
Olsen, Monica A. |
title |
Failure of cellulolysis in the rumen of reindeer fed timothy silage |
title_short |
Failure of cellulolysis in the rumen of reindeer fed timothy silage |
title_full |
Failure of cellulolysis in the rumen of reindeer fed timothy silage |
title_fullStr |
Failure of cellulolysis in the rumen of reindeer fed timothy silage |
title_full_unstemmed |
Failure of cellulolysis in the rumen of reindeer fed timothy silage |
title_sort |
failure of cellulolysis in the rumen of reindeer fed timothy silage |
publisher |
Septentrio Academic Publishing |
publishDate |
1995 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/1170 https://doi.org/10.7557/2.15.2.1170 |
long_lat |
ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
geographic |
Slaughter |
geographic_facet |
Slaughter |
genre |
Rangifer Rangifer tarandus |
genre_facet |
Rangifer Rangifer tarandus |
op_source |
Rangifer; Årg 15 Nr 2 (1995); 79-86 Rangifer; Vol 15 No 2 (1995); 79-86 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1170/1112 https://septentrio.uit.no/index.php/rangifer/article/view/1170 doi:10.7557/2.15.2.1170 |
op_rights |
Copyright (c) 2015 Monica A. Olsen, Tove H. Aagnes, Svein D. Mathiesen http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.15.2.1170 |
container_title |
Rangifer |
container_volume |
15 |
container_issue |
2 |
container_start_page |
79 |
_version_ |
1766175014487326720 |