Header

UZH-Logo

Maintenance Infos

Retention of solute and particle markers in the digestive tract of chinchillas (Chinchilla laniger)


Hagen, K B; Dittmann, M T; Ortmann, S; Kreuzer, M; Hatt, Jean-Michel; Clauss, Marcus (2016). Retention of solute and particle markers in the digestive tract of chinchillas (Chinchilla laniger). Journal of Animal Physiology and Animal Nutrition, 100:801-806.

Abstract

The chinchilla (Chinchilla laniger) is a herbivorous hystricomorph South American rodent for which no mean digesta retention times have been reported so far. Six animals (mean body mass ± standard deviation: 513 ± 99 g) on a diet of grass hay and lucerne-based pellets were given a pulse dose of a solute (cobalt-EDTA) and a particle (chromium-mordanted fibre, <2 mm) marker with subsequent frequent faecal collection. Dry matter intake was 45.2 ± 8.0 g/kg0.75/day. Mean retention times were 22.2 ± 5.3 h for solutes and 25.4 ± 5.2 h for particles, with the difference being not significant within individuals. This indicates the presence of a ‘mucus-trap’ colonic separation mechanism, which is in accord with morphological descriptions of the typical colonic furrow in chinchillas. Corresponding to a strategy of colonic digesta separation and caecotroph formation, secondary marker excretion peaks indicated coprophagic events that were spaced approximately 12 h apart. Given that these retention times appear longer than measures reported for rabbits (Oryctolagus cuniculus) or guinea pigs (Cavia procellus), it would be interesting to compare the digestive efficiency of chinchillas on high levels of dietary fibre to other species.

Abstract

The chinchilla (Chinchilla laniger) is a herbivorous hystricomorph South American rodent for which no mean digesta retention times have been reported so far. Six animals (mean body mass ± standard deviation: 513 ± 99 g) on a diet of grass hay and lucerne-based pellets were given a pulse dose of a solute (cobalt-EDTA) and a particle (chromium-mordanted fibre, <2 mm) marker with subsequent frequent faecal collection. Dry matter intake was 45.2 ± 8.0 g/kg0.75/day. Mean retention times were 22.2 ± 5.3 h for solutes and 25.4 ± 5.2 h for particles, with the difference being not significant within individuals. This indicates the presence of a ‘mucus-trap’ colonic separation mechanism, which is in accord with morphological descriptions of the typical colonic furrow in chinchillas. Corresponding to a strategy of colonic digesta separation and caecotroph formation, secondary marker excretion peaks indicated coprophagic events that were spaced approximately 12 h apart. Given that these retention times appear longer than measures reported for rabbits (Oryctolagus cuniculus) or guinea pigs (Cavia procellus), it would be interesting to compare the digestive efficiency of chinchillas on high levels of dietary fibre to other species.

Statistics

Altmetrics

Downloads

12 downloads since deposited on 12 Sep 2016
11 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Department of Small Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:2016
Deposited On:12 Sep 2016 09:26
Last Modified:08 Dec 2017 20:22
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0931-2439
Funders:SNF
Additional Information:This is the peer reviewed version of the following article: Hagen, K. B., Dittmann, M. T., Ortmann, S., Kreuzer, M., Hatt, J.-M. and Clauss, M. (2016), Retention of solute and particle markers in the digestive tract of chinchillas (Chinchilla laniger). J Anim Physiol Anim Nutr, 100: 801–806., which has been published in final form at dx.doi.org/10.1111/jpn.12441. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-820227.html#terms).
Publisher DOI:https://doi.org/10.1111/jpn.12441
PubMed ID:26857102

Download

Download PDF  'Retention of solute and particle markers in the digestive tract of chinchillas (Chinchilla laniger)'.
Preview
Content: Accepted Version
Filetype: PDF
Size: 1MB