Fluid and particle retention times in the black rhinoceros Diceros bicornis, a large hindgut-fermenting browser

• Autorzy: Clauss M. , Froeschle T. , Castell J. , Hatt J.M. , Ortmann S. , Streich W.J. , Hummel J.
• Języki publikacji: EN

Abstrakty

EN

The mean retention time (MRT) of ingesta in the gastrointestinal tract is one of the major determinants of herbivore digestive physiology. We examined MRTs of fluids and particles in the gastrointestinal tract of six adult captive black rhinocerosesDiceros bicornis on conventional zoo diets. Fluid MRT ranged from 25–45 h and averaged 31 h. Particle MRT ranged from 28–59 h and averaged 38 h. In the six animals, both fluid and particle MRT declined as relative dry matter intake (g/kg metabolic body mass) increased. Black rhinoceroses, which are large hindgut-fermenting browsers, retained ingesta for a shorter period relative to their body size than grazing equids or grazing rhinoceros species. Our findings support the hypothesis that browsing hindgut fermenters have relatively shorter MRTs than grazing hindgut fermenters.

Słowa kluczowe

EN

browser; rhinoceros; Diceros bicornis; grazer; black rhinoceros; mean retention time; passage rate

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 2005
• Tom: 50
• Numer: 3
• Opis fizyczny: p.367-376,fig.,ref.

Twórcy

autor

Clauss M.

• Institute of Animal Physiology, Schoenleutner Str.8, 85764 Oberschleissheim, Germany

autor

Froeschle T.

autor

Castell J.

autor

Hatt J.M.

autor

Ortmann S.

autor

Streich W.J.

autor

Hummel J.

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