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Table 4 Nitrogen excretion and nitrogen balance per protein diet

From: No protein intake compensation for insufficient indispensable amino acid intake with a low-protein diet for 12 days

 

Whey protein (n = 39)

Soy protein (n = 40)

Beef protein (n = 58)

N excretion day 11 (mg.kgBW.d -1 )

   

5En% (5En% wheat)

71.2 ± 30.6a

70.8 ± 22.8a

67.9 ± 21.6a

15En% (5En% wheat + 10En%)

124.8 ± 59.0b

112.2 ± 47.9b

138.0 ± 56.8b

30En% (5En% wheat + 25En%)

203.0 ± 104.6c

191.0 ± 79.9c

217.4 ± 109.7c

N balance day 11 (mg.kgBW.d -1 )

   

5En% (5En% wheat)

4.2 ± 39.1a

-6.9 ± 28.3a

3.5 ± 27.6a

15En% (5En% wheat + 10En%)

47.6 ± 52.1b

48.5 ± 43.5b

50.1 ± 60.4b

30En% (5En% wheat + 25En%)

73.5 ± 69.6c

71.5 ± 53.9c

95.8 ± 110.1c

  1. Values shown as means ± SDs.
  2. Values with different superscript letters indicate significant differences between diets that differed in relative protein content, P < 0.05 (in the whey, in the soy, or in the beef protein diets, repeated-measures ANOVA with Bonferroni correction for pairwise post-hoc comparisons).
  3. There were no significant differences between the protein groups (Non-parametric tests).
  4. BW, body weight; En%, percentage of energy; N, nitrogen P, protein.