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A comparison of gastrointestinal water content and osmolality in East African herbivores during hydration and dehydration

Published online by Cambridge University Press:  27 March 2009

G. M. O. Maloiy ,
C. R. Taylor  and
E. T. Clemens
G. M. O. Maloiy
Affiliation:
Department of Animal Physiology, University of Nairobi, Kenya, and
C. R. Taylor
Affiliation:
Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts, U.S.A.
E. T. Clemens
Affiliation:
Department of Animal Physiology, University of Nairobi, Kenya, and
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Extract

A wealth of information is available concerning the ‘normal’ gastrointestinal mechanisms within various species of herbivores (Alexander, 1962; Church, 1971; Quarterman, Phillips & Lampkin, 1957). In addition, the effect that dehydration has upon the physiology of digestion has also been investigated (Schmidt-Nielsen et al. 1956; Schmidt-Nielsen, 1964; Maloiy, 1972; Macfarlane et al. 1972). This communication presents preliminary observations on the effect that dehydration hasupon gastrointestinal water content, as a percentage of total gut contents, and fluid osmolality (m-osmol/kg H2O). A comparison was made under controlled laboratory conditions between six species of domestic herbivores fed identical diets and exposed to a simulated desert environment

Type
Short Note
Information
The Journal of Agricultural Science , Volume 91 , Issue 1 , August 1978 , pp. 249 - 252
Copyright
Copyright © Cambridge University Press 1978

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References

Alexander, F. (1962). The concentration of certain electrolytes in the digestive tract of the horse and pig. Research in Veterinary Science 3, 78–84.CrossRefGoogle Scholar
Church, D. C. (1971). Digestive Physiology and Nutrition of Ruminants, vol.2 (ed. Church, D. C.). Corvallis: Oregon University Press.Google Scholar
Goodall, E. D. & Kay, R. M. B. (1965). Digestion and absorption in the large intestine of the sheep. Journal of Physiology, London 176, 12–23.CrossRefGoogle ScholarPubMed
Jackson, D. C. & Schmidt-Nielsen, K. (1966). Heat production during diving in the fresh water turtle. Journal of Cell Physiology 67, 225–32.CrossRefGoogle ScholarPubMed
Joyce, J. P. & Blaxter, K. L. (1964). Respiration in sheep in cold environments. Research in Veterinary Science 5, 506–16.CrossRefGoogle Scholar
Macfarlane, W. V., Howard, B., Maloiy, G. M. O. & Hopcraft, D. (1972). Tritiated water in field studies of ruminant metabolism in Africa. In Isotopic Studies on the Physiology of Domestic Animals, pp. 83–94. Vienna: IAEA.Google Scholar
Maloiy, G. M. O. (1972). Renal salt and water excretion in the camel (Camelus dromedarius). Symposium Zoological Society of London 31, 243–51.Google Scholar
Quarterman, J., Phillips, G. D. & Lampkin, G. H. (1957). A difference in the physiology of the large intestine between European and indigenous cattle in the tropics. Nature, London 180, 552–3.CrossRefGoogle ScholarPubMed
Schmidt-Nielsen, B., Schmidt-Nielsen, K., Houpt, T. P. & Jarnum, S. A. (1956). Urea excretion in the camel. American Journal of Physiology 188, 477–84.CrossRefGoogle Scholar
Schmidt-Nielsen, K. (1964). Desert Animals: Physiology Problems Of Heat and Water, pp. 33–70. Oxford: Clarendon Press.Google Scholar
Schmidt-Nielsen, K., Hainsworth, F. R. & Murrish, D. E. (1970). Counter-current heat exchange in the respiratory passage: effect on water and heat balance. Respiratory Physiology 9, 263–76.CrossRefGoogle ScholarPubMed