Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter
In free-living (FL) reindeer eating a natural mixed winter diet dominated by lichens, captive (CF) reindeer fed pure lichens ad libitum, and CF reindeer subsequently starved for 1 day (CS1 reindeer) or 4 days (CS4 reindeer), the dominant rumen anaerobic bacteria were characterized, their population...
Published in: | Applied and Environmental Microbiology |
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American Society for Microbiology
1995
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Online Access: | http://dx.doi.org/10.1128/aem.61.2.583-591.1995 https://journals.asm.org/doi/pdf/10.1128/aem.61.2.583-591.1995 |
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crasmicro:10.1128/aem.61.2.583-591.1995 2024-09-15T18:31:48+00:00 Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter Aagnes, T H Sørmo, W Mathiesen, S D 1995 http://dx.doi.org/10.1128/aem.61.2.583-591.1995 https://journals.asm.org/doi/pdf/10.1128/aem.61.2.583-591.1995 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Applied and Environmental Microbiology volume 61, issue 2, page 583-591 ISSN 0099-2240 1098-5336 journal-article 1995 crasmicro https://doi.org/10.1128/aem.61.2.583-591.1995 2024-08-12T04:05:24Z In free-living (FL) reindeer eating a natural mixed winter diet dominated by lichens, captive (CF) reindeer fed pure lichens ad libitum, and CF reindeer subsequently starved for 1 day (CS1 reindeer) or 4 days (CS4 reindeer), the dominant rumen anaerobic bacteria were characterized, their population densities were estimated, and ruminal pH and volatile fatty acid concentrations were determined. In the FL reindeer, the total median viable anaerobic bacterial population ranged from 18 x 10(8) to 35 x 10(8) cells per ml of rumen fluid (n = 4), compared with 26 x 10(8) to 34 x 10(8) and 0.09 x 10(8) to 0.1 x 10(8) cells per ml of rumen fluid in CF reindeer (n = 2) and CS4 reindeer (n = 2), respectively. The median bacterial population adhering to the rumen solids ranged from 260 x 10(8) to 450 x 10(8), 21 x 10(8) to 38 x 10(8), and 0.5 x 10(8) cells per g (wet weight) of rumen solids in FL, CF, and CS4 reindeer, respectively. Although there were variations in the rumen bacterial composition among the FL reindeer (n = 4), strains of Bacteroides, Fibrobacter, Streptococcus, and Clostridium dominated in the rumen fluid. Streptococcus spp. and Clostridium spp. were the dominant bacteria in the CF reindeer (n = 2), while in the CS4 reindeer (n = 2) the dominant bacteria were Fusobacterium spp., members of the family Enterobacteriaceae, and Eubacterium spp. Transmission electron micrographs of lichen particles from the rumen of one FL reindeer, one CF reindeer, and one CS4 reindeer show bacteria resembling Bacteroides spp. adhering to the lichen particles, evidently digesting the lichen hyphae from the inside.(ABSTRACT TRUNCATED AT 250 WORDS) Article in Journal/Newspaper Rangifer tarandus ASM Journals (American Society for Microbiology) Applied and Environmental Microbiology 61 2 583 591 |
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Open Polar |
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ASM Journals (American Society for Microbiology) |
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crasmicro |
language |
English |
description |
In free-living (FL) reindeer eating a natural mixed winter diet dominated by lichens, captive (CF) reindeer fed pure lichens ad libitum, and CF reindeer subsequently starved for 1 day (CS1 reindeer) or 4 days (CS4 reindeer), the dominant rumen anaerobic bacteria were characterized, their population densities were estimated, and ruminal pH and volatile fatty acid concentrations were determined. In the FL reindeer, the total median viable anaerobic bacterial population ranged from 18 x 10(8) to 35 x 10(8) cells per ml of rumen fluid (n = 4), compared with 26 x 10(8) to 34 x 10(8) and 0.09 x 10(8) to 0.1 x 10(8) cells per ml of rumen fluid in CF reindeer (n = 2) and CS4 reindeer (n = 2), respectively. The median bacterial population adhering to the rumen solids ranged from 260 x 10(8) to 450 x 10(8), 21 x 10(8) to 38 x 10(8), and 0.5 x 10(8) cells per g (wet weight) of rumen solids in FL, CF, and CS4 reindeer, respectively. Although there were variations in the rumen bacterial composition among the FL reindeer (n = 4), strains of Bacteroides, Fibrobacter, Streptococcus, and Clostridium dominated in the rumen fluid. Streptococcus spp. and Clostridium spp. were the dominant bacteria in the CF reindeer (n = 2), while in the CS4 reindeer (n = 2) the dominant bacteria were Fusobacterium spp., members of the family Enterobacteriaceae, and Eubacterium spp. Transmission electron micrographs of lichen particles from the rumen of one FL reindeer, one CF reindeer, and one CS4 reindeer show bacteria resembling Bacteroides spp. adhering to the lichen particles, evidently digesting the lichen hyphae from the inside.(ABSTRACT TRUNCATED AT 250 WORDS) |
format |
Article in Journal/Newspaper |
author |
Aagnes, T H Sørmo, W Mathiesen, S D |
spellingShingle |
Aagnes, T H Sørmo, W Mathiesen, S D Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter |
author_facet |
Aagnes, T H Sørmo, W Mathiesen, S D |
author_sort |
Aagnes, T H |
title |
Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter |
title_short |
Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter |
title_full |
Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter |
title_fullStr |
Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter |
title_full_unstemmed |
Ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (Rangifer tarandus tarandus) in winter |
title_sort |
ruminal microbial digestion in free-living, in captive lichen-fed, and in starved reindeer (rangifer tarandus tarandus) in winter |
publisher |
American Society for Microbiology |
publishDate |
1995 |
url |
http://dx.doi.org/10.1128/aem.61.2.583-591.1995 https://journals.asm.org/doi/pdf/10.1128/aem.61.2.583-591.1995 |
genre |
Rangifer tarandus |
genre_facet |
Rangifer tarandus |
op_source |
Applied and Environmental Microbiology volume 61, issue 2, page 583-591 ISSN 0099-2240 1098-5336 |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/aem.61.2.583-591.1995 |
container_title |
Applied and Environmental Microbiology |
container_volume |
61 |
container_issue |
2 |
container_start_page |
583 |
op_container_end_page |
591 |
_version_ |
1810473539686367232 |