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. 2021 Jun 17;11(6):1809. doi: 10.3390/ani11061809

Table 3.

Diet and water intakes, and urine variables in dogs (n = 22) 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/BW0.75) 108.1 106.9 3.4 0.71 - -
Water intake (mL/kg/24 h) 43.9 50.3 1.4 <0.001 <0.001 <0.05
Urine volume (mL/kg/24 h) 19.7 27.3 1.2 <0.001 - -
Urine specific gravity 1.049 1.041 0.002 0.0002 - -
Urine pH 5.92 6.06 0.07 0.025 - -
CaOx RSS 15.0 11.0 n.a. 0.041 - -
MAP RSS 0.20 0.15 n.a. 0.23 - -
Urinary concentrations (mmol/L) -
Calcium 4.12 2.53 n.a. 0.0023 - -
Magnesium 6.03 4.41 0.42 <0.0001 - -
Sodium 136.3 94.0 6.1 <0.0001 - -
Potassium 138.02 226.55 n.a. <0.0001 - -
Ammonium 215.4 159.1 9.2 <0.0001 - -
Phosphate 49.6 37.0 3.0 0.0005 - -
Sulfate 126.8 89.9 5.5 <0.0001 - -
Oxalate 1.24 1.04 n.a. <0.0001 - -
Citrate 0.07 0.08 n.a. 0.09 0.08 <0.0001
Uric acid 1.08 0.81 n.a. <0.0001 - -
Urinary excretions (µmol/kg/24 h) -
Calcium 71.35 69.15 n.a. 0.60 0.03 0.02
Magnesium 109.7 114.7 7.5 0.34 - -
Sodium 2557.4 2513.6 130.1 0.79 - -
Potassium 2515.82 5793.43 n.a. <0.0001 - -
Ammonium 4072.3 4172.6 182.2 0.67 - -
Phosphate 920.3 951.9 52.8 0.70 - -
Sulfate 2378.5 2354.6 91.4 0.84 - -
Oxalate 25.42 30.15 n.a. 0.0004 - -
Citrate 1.39 2.04 n.a. <0.0001 0.001 <0.0001
Uric acid 22.6 23.3 1.6 0.47 0.0005 -

Data are presented as least square means except for CaOx RSS, MAP RSS, and calcium, potassium, oxalate, citrate, and uric acid concentrations and calcium, potassium, oxalate, and citrate 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, n.a.; not applicable.