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[Crystalluria in sows]

M Wendt1, F Lappe, K Bickhardt

  • 1Klinik für Wiederkäuer und Schweine, Justus-Liebig-Universität Giessen.

DTW. Deutsche Tierarztliche Wochenschrift
|December 1, 1996
PubMed
Summary

High phosphorus levels in sow feed significantly increase the risk of urinary crystals (crystalluria). This condition, exacerbated by alkaline urine and low water intake, can lead to bladder inflammation and urinary tract infections in pigs.

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Area of Science:

  • Animal Nutrition
  • Veterinary Medicine
  • Mineral Metabolism

Context:

  • Investigated the impact of dietary mineral levels on urinary health in breeding sows.
  • Examined the relationship between feed composition, water intake, and the development of urinary calculi.
  • Assessed blood mineral concentrations, renal excretion, and crystalluria in sows under different dietary regimens.

Purpose:

  • To determine the influence of high calcium and phosphorus feed levels on mineral balance and crystalluria in sows.
  • To evaluate the role of dietary mineral ratios and water supply in the formation of urinary crystals.
  • To assess the pathological consequences of crystalluria, including bladder inflammation and potential urinary tract infections.

Summary:

  • High dietary phosphorus levels were strongly correlated with increased urinary excretion of calcium phosphates, leading to crystalluria in sows.
  • Alkaline urine pH and reduced water intake were identified as contributing factors to crystal formation.
  • Microscopic analysis revealed amorphous calcium phosphate crystals, and cystoscopic examination showed bladder mucosal inflammation in affected sows.

Impact:

  • Crystalluria in sows is identified as a significant risk factor for developing urinary tract infections.
  • Findings highlight the importance of balanced mineral nutrition and adequate water supply for preventing urinary calculi in swine.
  • Results provide crucial insights for feed formulation and management practices to improve sow health and reduce disease incidence.

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