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Table 3 Body weight (kg), urine volume (ml/kg body weight/day), urinary pH, urine composition (mg/l) and relative supersaturation (RSS) of the urine 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.

 

Body weight

4.05

4.30

4.34

4.15

4.19

4.24

0.16

0.873

0.003

0.442

0.783

Urine volume

28.0

34.2

31.5

25.2

24.2

27.8

1.45

0.037

0.427

0.103

0.010

0.571

Urinary

 pH (6.30 h)

8.45

8.30

8.44

8.49

8.31

8.44

0.05

0.841

0.680

0.284

0.899

 pH (12.30 h)

8.18

8.36

8.30

8.25

8.16

8.19

0.05

0.287

0.762

0.456

0.351

 Ca

8.98

9.65

13.6

12.4

9.96

8.87

1.01

0.247

0.431

0.264

0.363

 P

1055

1110

1070

931

1022

1027

42.7

0.604

0.103

0.698

0.302

 Mg

11.3

6.06

5.54

7.11

6.03

5.87

0.62

0.483

0.040

0.304

0.430

 K

3415

3546

3707

3176

3154

3528

97.8

0.393

0.175

0.913

0.352

 Na

2041

2033

3122

2149

2267

2415

124

0.324

0.006

0.499

0.563

 Urea

54.4

61.3

77.8

57.5

71.8

74.7

2.67

0.103

< 0.001

0.646

0.995

 Creatinine

1239

1241

1491

1438

1561

1513

42.5

0.070

0.059

0.696

0.014

 Sulphate

830

977

1301

989

1301

1607

54.1

0.820

< 0.001

0.495

0.022

 Ox

59.7

54.8

56.1

54.2

51.1

45.3

1.61

0.032

0.524

0.563

0.003

0.808

 Citrate

202

198

195

308

190

180

17.9

0.192

0.150

0.022

0.144

 Ammonium

394

684

837

707

991

1138

98.0

0.845

0.005

0.663

0.058

RSS

 CaOx

0.88

0.82

1.16

0.92

0.79

0.59

0.09

0.198

0.882

0.475

0.031

 MAP

3.29

2.64

3.44

4.41

4.70

5.00

0.90

0.772

0.515

0.942

0.322