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Mineral absorption in the black rhinoceros ( Diceros bicornis ) as compared with the domestic horse by M. Clauss; J. C. Castell; E. Kienzle; P. Schramel; E. S. Dierenfeld; E. J. Flach; O. Behlert; W. J. Streich; J. Hummel; J‐M. Hatt is a Agricultural and Biological Sciences article available to read on EtoBox.
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## Summary To test whether mineral recommendations for horses are likely to guarantee adequate mineral provision for black rhinoceroses (__Diceros bicornis__), we investigated the apparent absorption (aA) of macro‐ and microminerals in eight black rhinoceroses from three zoological institutions in a total of 32 feeding trials with total faecal collection, with additional data from three unpublished studies (18 feeding trials). Feeds and faeces were analysed for Ca, P, Mg, Na, K, Fe, Mn, Cu, Zn and Co. The resulting aA coefficients, and the linear relationships of apparently absorbable dietary mineral content to total dietary mineral content [per 100 g dry matter (DM)], were compared with data for domestic horses. Rhinoceroses had significantly higher aA coefficients for Ca and Mg (because of a higher calculated ‘true’ absorption), and lower ones for Na and K (because of calculated higher endogenous faecal losses). High absorption efficiency for divalent cations is hypothesized to be an adaptation to a natural diet of particularly high Ca:P ratio (approximately 14:1); an effective removal of Ca from the ingesta guarantees sufficient P availability at the fermentation site in the hin
Who reads Mineral absorption in the black rhinoceros ( Diceros bicornis ) as compared with the domestic horse?
It is typically read by researchers, students, and practitioners in Agricultural and Biological Sciences.
- Author
- M. Clauss; J. C. Castell; E. Kienzle; P. Schramel; E. S. Dierenfeld; E. J. Flach; O. Behlert; W. J. Streich; J. Hummel; J‐M. Hatt
- Publisher
- Wiley
- Published
- 2007
- Language
- EN
- Field
- Agricultural and Biological Sciences (Life Sciences)