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A quantitative analysis of the effects of feeding and daily variation on plasma acid-base status in resting horses

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dc.contributor.advisor Geor, Raymond J.
dc.contributor.advisor Lindinger, M.
dc.contributor.author Smithurst, Kerri Jo
dc.date.accessioned 2021-07-21T14:17:08Z
dc.date.available 2021-07-21T14:17:08Z
dc.date.copyright 2003
dc.identifier.uri https://hdl.handle.net/10214/26105
dc.description.abstract This thesis investigated the main acid-base constituents in equine plasma that exhibit daily variation. A major focus was to determine total carbon dioxide concentration ([TCO2]). Jugular venous blood was sampled every 1 to 2-h over 25-h from 10 resting and either fasted or fed Standardbreds on a 3-wk conditioning program and racehorse diet. The independent variables, strong ion difference ([SID]), total concentration of weak acids and bases ([Atot]), and partial pressure of carbon dioxide (PCO2), were assessed to determine factors affecting hydrogen ion concentration ([H +]) and calculated [TCO2] using the physicochemical approach to acid-base balance. Variations were found in [glucose], haematocrit (Hct), plasma proteins ([PP]), chloride ([Cl-]), bicarbonate ([HCO3-]), [H+], [SID], [A tot] and PCO2; all of which appeared to be due to effects of feeding or dehydration. Mean [TCO2] varied up to 10 mmol/L throughout the day and 70% of the horses had a calculated measurement above 36.0 mmol/L.
dc.language.iso en
dc.subject horses
dc.subject feeding
dc.subject plasma acid-base status
dc.subject daily variation
dc.subject carbon dioxide concentration
dc.title A quantitative analysis of the effects of feeding and daily variation on plasma acid-base status in resting horses
dc.type Thesis
dc.degree.name Master of Science
dc.degree.department Department of Human Biology and Nutritional Sciences
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