Digestive and metabolic efficiencies of grizzly and black bears
Digestive and metabolic efficiencies of black bears (Ursus americanus) and grizzly bears (Ursus arctos) were determined in 7-day total collection trials using seven single foods and four mixed diets. No significant interspecific differences in digestive or metabolic efficiencies were observed. Dry m...
Published in: | Canadian Journal of Zoology |
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Language: | English |
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Canadian Science Publishing
1990
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Online Access: | http://dx.doi.org/10.1139/z90-244 http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-244 |
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crcansciencepubl:10.1139/z90-244 2024-09-15T18:40:12+00:00 Digestive and metabolic efficiencies of grizzly and black bears Pritchard, Geoffrey T. Robbins, Charles T. 1990 http://dx.doi.org/10.1139/z90-244 http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-244 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 68, issue 8, page 1645-1651 ISSN 0008-4301 1480-3283 journal-article 1990 crcansciencepubl https://doi.org/10.1139/z90-244 2024-08-29T04:08:50Z Digestive and metabolic efficiencies of black bears (Ursus americanus) and grizzly bears (Ursus arctos) were determined in 7-day total collection trials using seven single foods and four mixed diets. No significant interspecific differences in digestive or metabolic efficiencies were observed. Dry matter and energy digestibilities were inversely related to the dietary fiber content, whereas digestible protein was directly correlated with dietary protein content. Mean retention time for hair in a meat diet was 13 h, whereas the retention time for clover was 7 h and did not differ between species. Giant pandas (Ailuropoda melanoleuca), grizzly bears, and black bears appear to have very similar digestive efficiencies and passage rates. The relationships between diet composition and digestive efficiency can be used to begin evaluating the nutritional quality of diets consumed by free-ranging bears. Article in Journal/Newspaper Ursus arctos Canadian Science Publishing Canadian Journal of Zoology 68 8 1645 1651 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Digestive and metabolic efficiencies of black bears (Ursus americanus) and grizzly bears (Ursus arctos) were determined in 7-day total collection trials using seven single foods and four mixed diets. No significant interspecific differences in digestive or metabolic efficiencies were observed. Dry matter and energy digestibilities were inversely related to the dietary fiber content, whereas digestible protein was directly correlated with dietary protein content. Mean retention time for hair in a meat diet was 13 h, whereas the retention time for clover was 7 h and did not differ between species. Giant pandas (Ailuropoda melanoleuca), grizzly bears, and black bears appear to have very similar digestive efficiencies and passage rates. The relationships between diet composition and digestive efficiency can be used to begin evaluating the nutritional quality of diets consumed by free-ranging bears. |
format |
Article in Journal/Newspaper |
author |
Pritchard, Geoffrey T. Robbins, Charles T. |
spellingShingle |
Pritchard, Geoffrey T. Robbins, Charles T. Digestive and metabolic efficiencies of grizzly and black bears |
author_facet |
Pritchard, Geoffrey T. Robbins, Charles T. |
author_sort |
Pritchard, Geoffrey T. |
title |
Digestive and metabolic efficiencies of grizzly and black bears |
title_short |
Digestive and metabolic efficiencies of grizzly and black bears |
title_full |
Digestive and metabolic efficiencies of grizzly and black bears |
title_fullStr |
Digestive and metabolic efficiencies of grizzly and black bears |
title_full_unstemmed |
Digestive and metabolic efficiencies of grizzly and black bears |
title_sort |
digestive and metabolic efficiencies of grizzly and black bears |
publisher |
Canadian Science Publishing |
publishDate |
1990 |
url |
http://dx.doi.org/10.1139/z90-244 http://www.nrcresearchpress.com/doi/pdf/10.1139/z90-244 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
Canadian Journal of Zoology volume 68, issue 8, page 1645-1651 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z90-244 |
container_title |
Canadian Journal of Zoology |
container_volume |
68 |
container_issue |
8 |
container_start_page |
1645 |
op_container_end_page |
1651 |
_version_ |
1810484509231022080 |