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No distinct difference in the excretion of large particles of varying size in a wild ruminant, the banteng (Bos javanicus)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Schwarm, Angela Ortmann, Sylvia Wolf, Christian Clauss, Marcus |
| Copyright Year | 2009 |
| Abstract | The forestomach of ruminants and camelids does not only allow a differential excretion of fluids and small particles but also a differential excretion of small and large particles. The question whether larger particles of different size classes are also retained for different time periods, or whether simply a particle-size threshold exists above which all particles of a size higher than this threshold are retained in an undifferentiated manner, has not been addressed so far. We determined the mean retention time (MRT) of different-sized large particles (10 and 20 mm) in three banteng (Bos javanicus) on two forage only diets, grass and grass hay. We used cerium-mordanted fibre (10 mm) and lanthanum-mordanted fibre (20 mm) as particle markers, mixed in the food. Average total tract MRT for large and very large particles at the grass diet was 58 and 56 h and at the grass hay diet 66 and 64 h, respectively. Very large particles moved slightly faster than large particles through the gut of the banteng. Three interpretations are possible: Very large particles are resubmitted to rumination sooner than large particles; ingestive mastication of the particle markers could have reduced the difference in the size of the particle markers; alternatively, particle retention may be governed by a threshold, above which all particles of a size higher than this threshold are retained in an undifferentiated manner. In order to test these possibilities, experiments with fistulated animals would have to be performed. |
| Starting Page | 531 |
| Ending Page | 533 |
| Page Count | 3 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s10344-009-0277-0 |
| Alternate Webpage(s) | http://www.zora.uzh.ch/id/eprint/20796/5/Schwarm_Banteng_largeparticles_revised.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s10344-009-0277-0 |
| Volume Number | 55 |
| Journal | European Journal of Wildlife Research |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
