The absorption of phosphate ions from the ovine reticulorumen

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dc.contributor.author Wadhwa, D. R.
dc.contributor.author Care, A. D.
dc.date.accessioned 2009-12-23T13:55:05Z
dc.date.available 2009-12-23T13:55:05Z
dc.date.issued 2002-03
dc.identifier.citation Wadhwa , D R & Care , A D 2002 , ' The absorption of phosphate ions from the ovine reticulorumen ' Veterinary Journal , vol 163 , no. 2 , pp. 182-186 . en
dc.identifier.issn 1090-0233
dc.identifier.other PURE: 132945
dc.identifier.other dspace: 2160/3918
dc.identifier.uri http://hdl.handle.net/2160/3918
dc.description Wadhwa, D.R., Care, A.D. (2002). The absorption of phosphate ions from the ovine reticulorumen.  Veterinary Journal, 163, (2), 182-186 Sponsorship: Association of Commonwealth Universities en
dc.description.abstract The reticulorumen is now recognised to be an important site of net absorption of phosphate ions from ruminal fluid containing phosphate concentrations appropriate to those found in normal farming practice. These rates of absorption were measured in vivo from solutions placed in the washed reticulorumen, isolated in situ, in conscious, trained sheep. Reducing the ruminal sodium concentration led to reduced absorption of phosphate, suggestive that phosphate and sodium fluxes across the apical wall of the ruminal epithelial cell are linked, as they are in the kidney. Increased absorption of short chain fatty acids led to enhanced absorption of phosphate ions. Conversely, inhibition of carbonic anhydrase activity, by the addition of 1 mM acetazolamide to the ruminal fluid, led to a reduction in phosphate absorption. An increase in the acidity of the ruminal fluid also increased the absorption of phosphate, as did an increase in the ruminal Ca2+ concentration over the range 1–4 mmol per litre. It is suggested that these effects can be accounted for by a Na+/H+ antiporter coupled with a phosphate/proton symporter in the apical membrane of the ruminal epithelial cell. en
dc.format.extent 5 en
dc.language.iso eng
dc.relation.ispartof Veterinary Journal en
dc.subject rumen en
dc.subject phosphate en
dc.subject absorption en
dc.subject sodium en
dc.subject protons en
dc.title The absorption of phosphate ions from the ovine reticulorumen en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1053/tvjl.2001.0641
dc.contributor.institution Aberystwyth University en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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