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Uroliths in dog breeds in the UK

K. Roe, A. Pratt, J. Lulich, C. Osborne, H. M. Syme

THIS retrospective study aimed to identify breeds of dog in the UK at particular risk for urolithiasis. It involved analysing the records of all canine uroliths submitted for analysis to Hill's Pet Nutrition UK between January 1997 and December 2006. Uroliths were submitted to Minnesota Urolith Centre for analysis and a database was compiled containing the results of quantitative urolith analysis and patient demographic characteristics.

A total of 14,008 uroliths were submitted during the period of study. The most common type of urolith was struvite (magnesium ammonium phosphate), detected in 49.5 per cent of submissions followed by calcium oxalate (30.7 per cent). Age was recorded for 12,930 dogs. The greatest absolute number of all types of uroliths was found in dogs over 72 months of age. The proportion of calcium oxalate and mixed uroliths progressively increased with age, whereas those of urate and cystine decreased. The sex of the animal was known in 13,387 cases; uroliths were more common in males (52.4 per cent) than in females (47.6 per cent).

The annual number of submissions increased during the …

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