Renal clearance, urinary excretion of endogenous substances, and urinary diagnostic indices in healthy neonatal foals.

Journal of Veterinary Internal Medicine
B D BrewerR Gronwall

Abstract

Urine (U) and serum (S) were obtained every 2 hours during a 12- or 24-hour period from eight healthy 96-hour-old pony or horse foals. Dams' milk samples were obtained concurrently. Urine volume was measured during this 12- or 24-hour period. The mean amount of urine produced was 148 +/- 20 ml/kg/day. Baseline urinalyses were evaluated on all foals at two days of age, before any manipulation. Urine generally was dilute (less than 1.008) but the specific gravity was as high as 1.027 in one normal foal. Continuous (12 or 24 hour) urinary catheterization resulted in bacteriuria but not white blood cells in the urine. Prolonged catheterization did not cause foals to become febrile or exhibit clinical signs of cystitis or other illness. Urinary electrolyte excretion, urinary electrolyte clearances, and fractional electrolyte excretions (FE) were measured. When compared with normal values reported in adult horses, excretion, clearance, and FE were similar for sodium (Na) but higher for potassium (K), phosphorus (P), and calcium (Ca). There were no significant differences between data collected during different time periods, and it was concluded that the use of single sample urine/serum estimates of fractional excretion in the neonata...Continue Reading

References

Apr 1, 1982·Australian Veterinary Journal·I W CapleP G Ellis
Apr 3, 1958·The Journal of Physiology·R A McCANCE, E M WIDDOWSON

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Citations

Oct 21, 2010·Journal of Veterinary Internal Medicine·J R ElfenbeinL C Sanchez
Jul 26, 2008·The Veterinary Clinics of North America. Equine Practice·Jane E Axon, Jonathan E Palmer
Jul 26, 2008·The Veterinary Clinics of North America. Equine Practice·Catherine J Savage
Dec 7, 2007·The Veterinary Clinics of North America. Equine Practice·Ramiro E Toribio
Dec 7, 2007·The Veterinary Clinics of North America. Equine Practice·M Eilidh Wilson
Dec 7, 2007·The Veterinary Clinics of North America. Equine Practice·Erica C McKenzie
Apr 23, 2014·Journal of Veterinary Pharmacology and Therapeutics·N HovanessianM V Crisman
Apr 6, 2004·The Veterinary Clinics of North America. Equine Practice·K Gary Magdesian
Mar 28, 2008·Veterinary Clinical Pathology·Hervé P LefebvreJean-Pierre Braun
Apr 8, 2000·Journal of the American Veterinary Medical Association·J R RobersonL L Hullender
Oct 14, 2005·Journal of the American Veterinary Medical Association·Benjamin R BuchananFrank M Andrews
Jan 1, 1992·American Journal of Primatology·Richard E WellerHarvey A Ragan
Oct 5, 2021·Equine Veterinary Journal·Rachel L Gough, Kate F McGovern

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