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  • Title: The comparative effectiveness of three commercial oral solutions in correcting fluid, electrolyte and acid-base disturbances caused by calf diarrhoea.
    Author: Michell AR, Brooks HW, White DG, Wagstaff AJ.
    Journal: Br Vet J; 1992; 148(6):507-22. PubMed ID: 1467919.
    Abstract:
    Three commercial oral rehydration solutions (Effydral ('E'), Lectade ('L') and Lectade Plus ('LP')) were evaluated in young calves with diarrhoea following the administration of E. coli. Twenty calves with non-fatal diarrhoea were included in each group and examined for electrolytes, acidosis (pH, PCO2 and TCO2), PCV and selected biochemical parameters. Faecal consistency and clinical state were also assessed. Eight calves were examined for plasma and ECF volume. Calves were treated with the appropriate ORS only for 2 days and with ORS plus milk substitute for a further 2 days. No other treatments were given. Solutions E, L and LP were chosen specifically to test the hypothesis that their ability to repair extracellular volume would depend on their sodium content (E > L > LP) and their ability to correct metabolic acidosis would reflect their content of bicarbonate precursor (E > LP > L). Both hypotheses were confirmed as was the fact that the higher sodium content of E helps it to repair ECF volume without predisposing to hypernatraemia. The importance of correcting hyponatraemia as well as ECF volume is emphasized. Direct measurement of such changes proved much more sensitive than traditional clinical parameters such as weight loss, skin elasticity, etc. Although this study was not designed to examine mortality, it is noted that nine treated calves died, none in the E-treated group.
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