Ghent University Academic Bibliography

Advanced

Differences in selective reticulo-ruminal particle retention as a key factor in ruminant diversification

Marcus Clauss UGent and Matthias Lechner-Doll (2001) OECOLOGIA. 129(3). p.321-327
abstract
The measurement of passage rate is important for the concept of ruminant diversification. While supporters of Hofmann's 1989 feeding type classification claim that browsing ruminants have faster passage rates than grazing ruminants, other researchers consider the passage rate to depend on body size alone. To date, no convincing comparison of ruminant passage rates has been put forward. For comparative purposes, we suggest the use of the "selectivity factor", which is an expression of how much longer particles of a defined size (<2 mm) are retained in the ruminant digestive tract than fluids. From the limited data available, it seems that grazing ruminants display selectivity factors between 1.56 and 3.80, whereas browsers have a much narrower range of 1.14-1.80. This suggests that browsers are not able to selectively retain particles as long as grazers. Intake of browsers, on the other hand, may not be limited by physical fill of the forestomach to the same degree as in grazers. This result can explain several observations on the digestive physiology of browsers, some of which have been linked to a rumen bypass mechanism. We propose that the ability for selective particle retention is a key factor for understanding the physiological consequences of ruminant diversification.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
forestomach physiology, Browser-grazer dichotomy, selectivity factor, passage rate, rumen bypass, DEER CAPREOLUS-CAPREOLUS, RUMEN CILIATE PROTOZOA, WAPITI CERVUS-ELAPHUS, ROE DEER, NUTRITIONAL ECOLOGY, RED DEER, AFRICAN RUMINANTS, BLUE DUIKER, VITAMIN-E, DIGESTION
journal title
OECOLOGIA
Oecologia
volume
129
issue
3
pages
321 - 327
Web of Science type
Article
Web of Science id
000172418100001
JCR category
ECOLOGY
JCR impact factor
2.474 (2001)
JCR rank
20/102 (2001)
JCR quartile
1 (2001)
ISSN
0029-8549
DOI
10.1007/s004420100735
language
English
UGent publication?
no
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
675718
handle
http://hdl.handle.net/1854/LU-675718
date created
2009-06-03 09:31:13
date last changed
2016-12-19 15:42:34
@article{675718,
  abstract     = {The measurement of passage rate is important for the concept of ruminant diversification. While supporters of Hofmann's 1989 feeding type classification claim that browsing ruminants have faster passage rates than grazing ruminants, other researchers consider the passage rate to depend on body size alone. To date, no convincing comparison of ruminant passage rates has been put forward. For comparative purposes, we suggest the use of the {\textacutedbl}selectivity factor{\textacutedbl}, which is an expression of how much longer particles of a defined size ({\textlangle}2 mm) are retained in the ruminant digestive tract than fluids. From the limited data available, it seems that grazing ruminants display selectivity factors between 1.56 and 3.80, whereas browsers have a much narrower range of 1.14-1.80. This suggests that browsers are not able to selectively retain particles as long as grazers. Intake of browsers, on the other hand, may not be limited by physical fill of the forestomach to the same degree as in grazers. This result can explain several observations on the digestive physiology of browsers, some of which have been linked to a rumen bypass mechanism. We propose that the ability for selective particle retention is a key factor for understanding the physiological consequences of ruminant diversification.},
  author       = {Clauss, Marcus and Lechner-Doll, Matthias},
  issn         = {0029-8549},
  journal      = {OECOLOGIA},
  keyword      = {forestomach physiology,Browser-grazer dichotomy,selectivity factor,passage rate,rumen bypass,DEER CAPREOLUS-CAPREOLUS,RUMEN CILIATE PROTOZOA,WAPITI CERVUS-ELAPHUS,ROE DEER,NUTRITIONAL ECOLOGY,RED DEER,AFRICAN RUMINANTS,BLUE DUIKER,VITAMIN-E,DIGESTION},
  language     = {eng},
  number       = {3},
  pages        = {321--327},
  title        = {Differences in selective reticulo-ruminal particle retention as a key factor in ruminant diversification},
  url          = {http://dx.doi.org/10.1007/s004420100735},
  volume       = {129},
  year         = {2001},
}

Chicago
Clauss, Marcus, and Matthias Lechner-Doll. 2001. “Differences in Selective Reticulo-ruminal Particle Retention as a Key Factor in Ruminant Diversification.” Oecologia 129 (3): 321–327.
APA
Clauss, Marcus, & Lechner-Doll, M. (2001). Differences in selective reticulo-ruminal particle retention as a key factor in ruminant diversification. OECOLOGIA, 129(3), 321–327.
Vancouver
1.
Clauss M, Lechner-Doll M. Differences in selective reticulo-ruminal particle retention as a key factor in ruminant diversification. OECOLOGIA. 2001;129(3):321–7.
MLA
Clauss, Marcus, and Matthias Lechner-Doll. “Differences in Selective Reticulo-ruminal Particle Retention as a Key Factor in Ruminant Diversification.” OECOLOGIA 129.3 (2001): 321–327. Print.