Abstract
One hundred and sixty calves were given range grass hay to 50 wk of age when they were slaughtered and their bladders and kidneys examined for calculi. Weights of calculous material were up to 649 mg in bladders and up to 1,633 mg in kidneys but most calves contained less than 100 mg in either organ. Sixty-one calves had sufficient weight of bladder calculi to have produced a calculus capable of blocking the urethra. Silica averaged 35.9% in bladder calculi and 40.4% in kidney calculi. There was a significant linear correlation (r = 0.73) between the percentage of silica in calculi from bladders and in those from kidneys. This suggests that when bladder calculi are high in silica, kidney calculi also tend to be high in silica and vice versa. The results are taken as evidence that site of formation of calculi is unimportant when assessing effects of treatments on calculus production in calves.
Publisher
Canadian Science Publishing
Subject
Animal Science and Zoology,Food Animals
Cited by
2 articles.
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