Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter
The gross anatomy of the gastrointestinal (GI) tract was investigated in reindeer calves (Rangtfer tarandus tarandus), free-living and fed two different qualities of timothy silage in September 1992 (summer) and April 1993 (winter) and related to the body condition. At both seasons nine male reindee...
Published in: | Rangifer |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Septentrio Academic Publishing
1996
|
Subjects: | |
Online Access: | https://septentrio.uit.no/index.php/rangifer/article/view/1184 https://doi.org/10.7557/2.16.1.1184 |
id |
ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1184 |
---|---|
record_format |
openpolar |
spelling |
ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/1184 2023-05-15T18:03:54+02:00 Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter Aagnes, Tove H. Mathiesen, Svein D. 1996-01-01 application/pdf https://septentrio.uit.no/index.php/rangifer/article/view/1184 https://doi.org/10.7557/2.16.1.1184 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/1184/1124 https://septentrio.uit.no/index.php/rangifer/article/view/1184 doi:10.7557/2.16.1.1184 Copyright (c) 2015 Tove H. Aagnes, Svein D. Mathiesen http://creativecommons.org/licenses/by/3.0/ CC-BY Rangifer; Årg 16 Nr 1 (1996); 31-39 Rangifer; Vol 16 No 1 (1996); 31-39 1890-6729 reindeer Rangifer grass silage rumen fill body condition gastrointestinal tract gross anatomy info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1996 ftunitroemsoe https://doi.org/10.7557/2.16.1.1184 2021-08-16T14:51:42Z The gross anatomy of the gastrointestinal (GI) tract was investigated in reindeer calves (Rangtfer tarandus tarandus), free-living and fed two different qualities of timothy silage in September 1992 (summer) and April 1993 (winter) and related to the body condition. At both seasons nine male reindeer calves were taken from a natural pasture. Three animals were slaughtered directly (NP reindeer), three offered first cut (FC) silage and three regrowth (RG) silage ad lib., for 46 days. The FC silage contained 27% leaves and 57.8% dry matter (DM) cell wall content (CWC) and the RG silage 89 % leaves, and 38.7% DM CWC. The reticulo-rumen (RR) digesta wet weight in the NP reindeer in summer was 6.7-7.7% of body mass (BM), compared to 25.1-32.8% and 9.6-12.9% of BM, respectively, in the animals fed FC and RG silage. In winter the RR digesta wet weight relative to BM in the NP reindeer and in the animals fed FC and RG silages were 9-5-11.5%, 25.4-33.3% and 10.4-18.3%, respectively. The distal fermentation chamber (DFC) digesta wet weight in the NP animals in summer was 0.48-0.80% of BM, compared to 0.77-1.26% and 0.57¬0.65% of BM, respectively, in the animals fed FC and RG silage. In winter the DFC digesta wet weight relative to BM in the animals fed FC and RG silage did not differ significantly from the summer values (P>0.05), while in the NP reindeer it was 1.0-1.2% of BM which is significantly greater than in summer (P<0.05). The differences in relative weight of the fermentation chambers between the animals fed FC and RG silage both summer and winter were not reflected in total BM, which was similar in all groups fed silage. This is explained by a significantly lower carcass weight in the animals fed FC silage compared to the animals fed RG silage. Thus, the GI-tract gross anatomy in the silage fed animals seem to be highly affected by the plant structure and composition, and not by the season. Article in Journal/Newspaper Rangifer University of Tromsø: Septentrio Academic Publishing Rangifer 16 1 31 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
reindeer Rangifer grass silage rumen fill body condition gastrointestinal tract gross anatomy |
spellingShingle |
reindeer Rangifer grass silage rumen fill body condition gastrointestinal tract gross anatomy Aagnes, Tove H. Mathiesen, Svein D. Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
topic_facet |
reindeer Rangifer grass silage rumen fill body condition gastrointestinal tract gross anatomy |
description |
The gross anatomy of the gastrointestinal (GI) tract was investigated in reindeer calves (Rangtfer tarandus tarandus), free-living and fed two different qualities of timothy silage in September 1992 (summer) and April 1993 (winter) and related to the body condition. At both seasons nine male reindeer calves were taken from a natural pasture. Three animals were slaughtered directly (NP reindeer), three offered first cut (FC) silage and three regrowth (RG) silage ad lib., for 46 days. The FC silage contained 27% leaves and 57.8% dry matter (DM) cell wall content (CWC) and the RG silage 89 % leaves, and 38.7% DM CWC. The reticulo-rumen (RR) digesta wet weight in the NP reindeer in summer was 6.7-7.7% of body mass (BM), compared to 25.1-32.8% and 9.6-12.9% of BM, respectively, in the animals fed FC and RG silage. In winter the RR digesta wet weight relative to BM in the NP reindeer and in the animals fed FC and RG silages were 9-5-11.5%, 25.4-33.3% and 10.4-18.3%, respectively. The distal fermentation chamber (DFC) digesta wet weight in the NP animals in summer was 0.48-0.80% of BM, compared to 0.77-1.26% and 0.57¬0.65% of BM, respectively, in the animals fed FC and RG silage. In winter the DFC digesta wet weight relative to BM in the animals fed FC and RG silage did not differ significantly from the summer values (P>0.05), while in the NP reindeer it was 1.0-1.2% of BM which is significantly greater than in summer (P<0.05). The differences in relative weight of the fermentation chambers between the animals fed FC and RG silage both summer and winter were not reflected in total BM, which was similar in all groups fed silage. This is explained by a significantly lower carcass weight in the animals fed FC silage compared to the animals fed RG silage. Thus, the GI-tract gross anatomy in the silage fed animals seem to be highly affected by the plant structure and composition, and not by the season. |
format |
Article in Journal/Newspaper |
author |
Aagnes, Tove H. Mathiesen, Svein D. |
author_facet |
Aagnes, Tove H. Mathiesen, Svein D. |
author_sort |
Aagnes, Tove H. |
title |
Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
title_short |
Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
title_full |
Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
title_fullStr |
Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
title_full_unstemmed |
Gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
title_sort |
gross anatomy of the gastrointestinal tract in reindeer, free-living and fed baled timothy silage in summer and winter |
publisher |
Septentrio Academic Publishing |
publishDate |
1996 |
url |
https://septentrio.uit.no/index.php/rangifer/article/view/1184 https://doi.org/10.7557/2.16.1.1184 |
genre |
Rangifer |
genre_facet |
Rangifer |
op_source |
Rangifer; Årg 16 Nr 1 (1996); 31-39 Rangifer; Vol 16 No 1 (1996); 31-39 1890-6729 |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/1184/1124 https://septentrio.uit.no/index.php/rangifer/article/view/1184 doi:10.7557/2.16.1.1184 |
op_rights |
Copyright (c) 2015 Tove H. Aagnes, Svein D. Mathiesen http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/2.16.1.1184 |
container_title |
Rangifer |
container_volume |
16 |
container_issue |
1 |
container_start_page |
31 |
_version_ |
1766175015014760448 |