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Table 4 In vivo estimation and calculated/predicted amount of excreted faeces DM, N, C and urine N of the experimental diets (DK, VN and TH)

From: Models to quantify excretion of dry matter, nitrogen, phosphorus and carbon in growing pigs fed regional diets

  In vivo estimation Calculated from tables1    Predicted from equations2   
  DK VN TH SE3 DK VN TH Deviation4 RMSEP5 DK VN TH Deviation RMSEP
Faeces DM, kg/d 0.24 0.44 0.20 0.027 0.28 0.46 0.22 -0.022 0.01 0.29 0.40 0.23 -0.012 0.03
Faeces N, g/d 8.8 13.8 10.0 1.33 7.4 11.7 8.1 1.82 0.2 9.3 12.5 9.2 0.52 0.6
Faeces C, g/d 108 208 93 12.5 105 209 85 3.4 3 114 170 82 14.6 13
Urine N, g/d 15.4 13.9 18.0 2.43 18.06 18.7 18.5 -2.59 1.2 18.0 21.2 22.6 -4.81 1.4
  1. DK Danish diet, VN Vietnamese diet, TH Thai diet.
  2. 1Based on feed intake shown in Table 2 and values calculated from tables (Bach Knudsen [19]; Just et al. [25]; NRC [26]; Vils and Sloth [27]) shown in Table 3.
  3. 2Based on feed intake shown in Table 2 and equations from Vu et al. [29].
  4. 3Pooled standard error.
  5. 4Deviation, systematic difference between the experimental estimated value and that calculated using either table values or predicted values.
  6. 5RMSEP, root mean square error of prediction.
  7. 6Urine N calculated assuming a 50% utilization of the digested N.