Relative supersaturation values distinguish between feline urinary and non-urinary foods and align with expected urine analytes contributions to uroliths

Introduction Uroliths are concretions formed in the urinary tract. These can be problematic humans and companion animals such as cats. Magnesium ammonium phosphate (struvite) calcium oxalate (CaOx) most common forms of uroliths. The relative supersaturation (RSS) is a risk index crystal formation. Here, an updated program for calculating RSS, EQUIL-HL21, was used to detect differences RSS values when cats were fed foods formulated non-urinary conditions. In addition, contributions analytes examined via regression analyses. Methods Historical data from feeding trials including indicated use or conditions analyzed nutrient composition parameters. calculated by EQUIL-HL21. relationship between EQUIL-HL21 models, which selected R 2 stepwise methods. Results Cats that consumed had significantly greater levels sodium chloride compared with those foods, consistent amounts foods. Those higher urine pH, ammonium, potassium, phosphorus, magnesium, oxalate, citrate, sulfate. Struvite value number crystals lower Mean CaOx similar both though A model predicting natural log struvite these would increase increasing chloride, calcium, decrease citrate predicted oxalates increased, sodium, sulfate increased. Discussion analyses demonstrate accurately expected indications. Regression models showed eight that, respectively, contribute CaOx.