Table 2.
Diet and water intakes, and urine variables in cats (n = 17) fed the two diets differing in potassium chloride content.
| Variable | Diet A KCl 0.6% |
Diet B KCl 2.5% |
SE | p-Value for Diet | p-Value for Panel |
p-Value for Panel × Diet |
|---|---|---|---|---|---|---|
| Caloric intake (kcal/BW0.711) | 94.9 | 94.4 | 4.7 | 0.892 | - | - |
| Water intake (mL/kg/24 h) | 28.5 | 33.8 | 1.6 | <0.0001 | - | - |
| Urine volume (mL/kg/24 h) | 11.2 | 16.2 | 0.9 | <0.0001 | - | - |
| Urine specific gravity | 1.069 | 1.058 | 0.002 | <0.0001 | - | - |
| Urine pH | 5.93 | 5.93 | 0.06 | 0.877 | - | - |
| CaOx RSS | 3.24 | 2.59 | 0.37 | 0.034 | - | - |
| MAP RSS | 0.29 | 0.17 | - | 0.112 | - | - |
| Urinary concentrations (mmol/L) | - | |||||
| Calcium | 0.9 | 0.7 | 0.1 | 0.046 | - | - |
| Magnesium | 5.6 | 5.2 | 0.4 | <0.0001 | - | - |
| Sodium | 175.5 | 127.3 | 6.5 | <0.0001 | - | - |
| Potassium | 203.3 | 350.5 | 11.8 | <0.0001 | - | - |
| Ammonium | 298.99 | 217.77 | 10.57 | <0.0001 | 0.997 | 0.036 |
| Phosphate | 78.1 | 58.0 | 3.1 | <0.0001 | - | - |
| Sulfate | 164.7 | 112.3 | 5.2 | <0.0001 | - | - |
| Oxalate | 1.83 | 1.46 | 0.10 | <0.0001 | 0.58 | 0.037 |
| Citrate | 2.5 | 2.3 | 0.4 | 0.40 | - | - |
| Uric acid | 0.8 | 0.6 | 0.1 | <0.0001 | - | - |
| Urinary excretions (µmol/kg/24 h) | - | |||||
| Calcium | 9.8 | 9.5 | - | 0.075 | - | - |
| Magnesium | 62.2 | 82.5 | 6.0 | 0.0002 | - | - |
| Sodium | 1942 | 2027 | 130 | 0.548 | - | - |
| Potassium | 2181 | 5895 | - | <0.0001 | - | - |
| Ammonium | 3174 | 3428 | - | 0.294 | - | - |
| Phosphate | 852 | 910 | 46 | 0.205 | - | - |
| Sulfate | 1804 | 1769 | 94 | 0.714 | - | - |
| Oxalate | 20.1 | 21.6 | 1.1 | 0.323 | - | - |
| Citrate | 21.7 | 29.6 | - | 0.024 | - | - |
| Uric acid | 9.0 | 7.7 | - | 0.605 | - | - |
Data are presented as least square means except for caloric intake, MAP RSS, and calcium, potassium, ammonium, citrate, and uric acid excretions, for which medians are indicated. All variables presented as /24 h were measured over 72 h and divided by 3 to give a daily average for presentation in this table. Missing p-values represent an absence of significance in the mixed-effects model and these effects were therefore removed. BW; body weight, SE; standard error, kg; kilogram, h; hours.