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The influence of dietary tannin supplementation on digestive performance in captive black rhinoceros (Diceros bicornis)

Marcus Clauss UGent, Johanna Castell, Ellen Kienzle, Ellen Dierenfeld, EJ Flach, O Behlert, Sylvia Ortmann, W Jürgen Streich, Jürgen Hummel and Jean-Michel Hatt (2007) JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION. 91(11-12). p.449-458
abstract
Free-ranging browsers such as the black rhinoceros (Diceros bicornis) consume a diet that contains tannins, whereas the diets offered to them in captivity consist mostly of items known to contain hardly any such secondary plant compounds. Tannins could have potentially beneficial effects, including the chelation of dietary iron (iron storage disease is a common problem in black rhinos). Here, we tested the acceptance, and the consequences on digestion variables, of a low-dose tannin supplementation in captive animals. Eight black rhinoceroses from three zoological institutions were used. Faecal output was quantified by total faecal collection. Diets fed were regular zoo diets supplemented with either tannic acid (T, hydrolysable tannin) or quebracho (Q, condensed tannins); overall tannin source intake increased at 5-15 g/kg dry matter (DM) in relation to regular zoo diets. Adaptation periods to the new diets were > 2 months. Additional data were taken from one hitherto unpublished study. Data were compared to measurements in the same animals on their regular zoo diets. All animals accepted the new diets without hesitation. There was no influence of tannin supplementation on digestion coefficients of DM and its constituents, or faecal concentrations of short- chain fatty acids or lactate. Water intake did not increase during tannin supplementation. Should the inclusion of dietary tannin sources be an objective in the development of diets for captive rhinoceroses, moderate doses such as used in this study are unlikely to cause relevant depressions of digestive efficiency and will not interfere with bacterial fermentation in a relevant way.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
digestive physiology, digestion, feeding, tannic acid, quebracho, fermentation, non-dietry faecal nitrogen, short-chain fatty acids, NUTRIENT COMPOSITION, TRUE DIGESTIBILITY, CONDENSED TANNIN, DEFENDING PLANTS, RETENTION TIMES, NATIONAL-PARK, DRY-MATTER, FERMENTATION, RUMINANTS, GOATS
journal title
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
J. Anim. Physiol. Anim. Nutr.
volume
91
issue
11-12
pages
449 - 458
Web of Science type
Article
Web of Science id
000250646800001
JCR category
VETERINARY SCIENCES
JCR impact factor
0.911 (2007)
JCR rank
44/122 (2007)
JCR quartile
2 (2007)
ISSN
0931-2439
DOI
10.1111/j.1439-0396.2006.00673.x
language
English
UGent publication?
no
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
669252
handle
http://hdl.handle.net/1854/LU-669252
date created
2009-05-27 15:11:30
date last changed
2009-09-23 14:55:01
@article{669252,
  abstract     = {Free-ranging browsers such as the black rhinoceros (Diceros bicornis) consume a diet that contains tannins, whereas the diets offered to them in captivity consist mostly of items known to contain hardly any such secondary plant compounds. Tannins could have potentially beneficial effects, including the chelation of dietary iron (iron storage disease is a common problem in black rhinos). Here, we tested the acceptance, and the consequences on digestion variables, of a low-dose tannin supplementation in captive animals. Eight black rhinoceroses from three zoological institutions were used. Faecal output was quantified by total faecal collection. Diets fed were regular zoo diets supplemented with either tannic acid (T, hydrolysable tannin) or quebracho (Q, condensed tannins); overall tannin source intake increased at 5-15 g/kg dry matter (DM) in relation to regular zoo diets. Adaptation periods to the new diets were {\textrangle} 2 months. Additional data were taken from one hitherto unpublished study. Data were compared to measurements in the same animals on their regular zoo diets. All animals accepted the new diets without hesitation. There was no influence of tannin supplementation on digestion coefficients of DM and its constituents, or faecal concentrations of short- chain fatty acids or lactate. Water intake did not increase during tannin supplementation. Should the inclusion of dietary tannin sources be an objective in the development of diets for captive rhinoceroses, moderate doses such as used in this study are unlikely to cause relevant depressions of digestive efficiency and will not interfere with bacterial fermentation in a relevant way.},
  author       = {Clauss, Marcus and Castell, Johanna and Kienzle, Ellen and Dierenfeld, Ellen and Flach, EJ and Behlert, O and Ortmann, Sylvia and Streich, W J{\"u}rgen and Hummel, J{\"u}rgen and Hatt, Jean-Michel},
  issn         = {0931-2439},
  journal      = {JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION},
  keyword      = {digestive physiology,digestion,feeding,tannic acid,quebracho,fermentation,non-dietry faecal nitrogen,short-chain fatty acids,NUTRIENT COMPOSITION,TRUE DIGESTIBILITY,CONDENSED TANNIN,DEFENDING PLANTS,RETENTION TIMES,NATIONAL-PARK,DRY-MATTER,FERMENTATION,RUMINANTS,GOATS},
  language     = {eng},
  number       = {11-12},
  pages        = {449--458},
  title        = {The influence of dietary tannin supplementation on digestive performance in captive black rhinoceros (Diceros bicornis)},
  url          = {http://dx.doi.org/10.1111/j.1439-0396.2006.00673.x},
  volume       = {91},
  year         = {2007},
}

Chicago
Clauss, Marcus, Johanna Castell, Ellen Kienzle, Ellen Dierenfeld, EJ Flach, O Behlert, Sylvia Ortmann, W Jürgen Streich, Jürgen Hummel, and Jean-Michel Hatt. 2007. “The Influence of Dietary Tannin Supplementation on Digestive Performance in Captive Black Rhinoceros (Diceros Bicornis).” Journal of Animal Physiology and Animal Nutrition 91 (11-12): 449–458.
APA
Clauss, M., Castell, J., Kienzle, E., Dierenfeld, E., Flach, E., Behlert, O., Ortmann, S., et al. (2007). The influence of dietary tannin supplementation on digestive performance in captive black rhinoceros (Diceros bicornis). JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, 91(11-12), 449–458.
Vancouver
1.
Clauss M, Castell J, Kienzle E, Dierenfeld E, Flach E, Behlert O, et al. The influence of dietary tannin supplementation on digestive performance in captive black rhinoceros (Diceros bicornis). JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION. 2007;91(11-12):449–58.
MLA
Clauss, Marcus, Johanna Castell, Ellen Kienzle, et al. “The Influence of Dietary Tannin Supplementation on Digestive Performance in Captive Black Rhinoceros (Diceros Bicornis).” JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION 91.11-12 (2007): 449–458. Print.