Effect of parturition on sow urinary creatinine



Title Effect of parturition on sow urinary creatinine
Author(s) Lius A. Bate, R. R. Hacker
Journal Canadian Journal of Animal Science
Date 1981
Volume 61
Issue 4
Start page 913
End page 917
Abstract Total urinary creatinine (UC) was measured three times a day from 5 days before to 4 days after parturition in 13 Yorkshire sows. Total UC remained unchanged during days 5, 4, and 3, and decreased during days 2 and 1 before parturition. After parturition, levels increased, reaching peak values on day 2 and declining thereafter to approximately prepartum values. Differences in total UC did not exist between the three collection periods of the day. However, large differences existed between animals. Correlations between litter weight (LW) and changes in UC excretion for days 1 and 2 postpartum were 0.746 and 0.749, respectively, while for days 3 and 4 postpartum, the correlation was only 0.349 and 0.463, respectively. Prediction equations indicated that if UC is to be utilized as an index for expressing concentrations of urinary metabolites, during the first 2 days following parturition, correction must be made for changes in UC excretion..
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