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Effect of castration on the urinary protein-to-creatinine ratio of male dogs

M. B. Bertieri, C. Lapointe, B. Conversy, C. Gara-Boivin

THE presence of proteinuria in dogs with chronic kidney disease is associated with a greater risk of uraemic crises and death. Extraurinary, postrenal or functional renal factors can result in proteins in the urine and should be ruled out before persistent proteinuria of renal origin can be diagnosed; however, limited evidence is available on the effects of semen on the urinary protein-to-creatinine ratio (UPCR). This study aimed to compare the UPCR of healthy male dogs before and after castration.

Nineteen healthy male dogs which were admitted for castration to a veterinary teaching hospital were included in the study. Physical, haematological and biochemical examinations and urinalysis (including calculation of the UPCR) were performed on each dog. Dogs were re-evaluated at least 15 days after castration, at which time physical examination and urinalysis were performed. The sensitivity and specificity of the ability of urinary dipstick tests to detect proteinuria (defined as UPCR more than 0.5) in the samples obtained were evaluated.

Spermatozoa were found in 15 of 19 samples collected before castration. No spermatozoa were found in any of the …

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