To prevent phosphate and struvite
stones, urine should be rendered acidified with moderate intake of proteins (White meat, sardines and dairy products).
Made of magnesium ammonium phosphate, struvite
crystals are usually found in clean urine.
A total of five treatments consisting of three (3) fecal matter organic fertilizers (struvite
, compost, and cow manure), inorganic fertilizer, Diammonium phosphate (DAP) and an untreated control were evaluated.
Effect of supplementation of dry cat food with DL-Methionine and ammonium chloride on struvite
activity product and sediment in urine.
Analysis of the stone showed a struvite
stone with ammonium magnesium phosphate crystals, with degraded epithelial cells and leukocytes.
Under these conditions, Mg can be used to precipitate struvite
The types of crystals varied in different species which included struvite
Most, around 85 percent, of urinary stones are made up of calcium, the rest consist of struvite
, uric acid, and cystine.
stones are thought to form in the presence of urease producing bacteria that create an environment favoring the formation of magnesium ammonium phosphate.
Factors associated with struvite
renal stone formation include:
Guidetti, "Nutraceutical approach for struvite
uroliths management in cats," International Journal of Applied Research in Veterinary Medicine, vol.
For prevention of calcium phosphate and struvite
stones, urine should be acidified.