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Table 4 Feed intake (g/kg body weight/day) and renal excretion (mg/kg body weight/day) of cats fed diets with varying protein concentrations and qualities. n = 10 / diet, Mean and SEM

From: Influence of protein concentration and quality in a canned diet on urine composition, apparent nutrient digestibility and energy supply in adult cats

     P values (polynomial contrasts)
  Low protein quality High protein quality SEM Interaction Low protein quality High protein quality Protein concentration Protein quality
  36.7% 45.0% 56.1% 36.2% 43.3% 54.9%    Lin. Quadr. Lin. Quadr. Lin. Quadr.  
Feed intake 55.3 58.1 54.2 48.1 50.4 56.7 1.53 0.152 0.110 0.953 0.026
Renal excretion
 Ca 0.25 0.36 0.39 0.34 0.25 0.24 0.04 0.463 0.265 0.404 0.141
 P 29.2 39.3 29.6 21.8 23.7 28.5 1.76 0.308 0.020 0.437 0.088
 Mg 0.32 0.19 0.15 0.18 0.13 0.17 0.02 0.265 0.098 0.251 0.239
 K 96.5 118 122 75.4 75.1 99.2 6.53 0.052 0.026 0.540 0.041
 Na 55.1 66.8 99.6 50.2 53.9 67.1 5.04 0.641 0.003 0.881 0.150
 Ox 1.68 1.86 1.59 1.27 1.22 1.26 0.07 0.499 0.702 0.484 0.013
 Citrate 5.40 7.48 6.20 7.53 4.48 4.83 0.64 0.629 0.333 0.186 0.922
 Ammonium 10.8 23.0 23.7 18.0 21.7 30.3 2.26 0.224 0.003 0.683 0.077
 Creatinine 33.6 38.6 40.8 32.9 36.3 41.6 0.90 0.164 <0.001 0.802 0.543
 Urea 1.54 2.02 2.12 1.31 1.69 2.04 0.09 0.485 <0.001 0.582 0.045
 Sulphate 23.0 32.5 35.7 24.1 30.9 44.7 1.61 0.014 <0.001 0.251 <0.001 0.047