Diets    
  WS 0 WS 10 WS 15 WS 20 WS 25 WS 30 SEM P-value
Content as analysed
Crude protein 41.6 42.3 41.6 41.6 42.1 41.3    
Crude fat 18.9 17.8 16.5 11.7 8.4 10.2    
Starch 0.6 9.0 13.3 18.4 22.0 27.3    
Ash 7.0 6.9 7.0 6.9 7.0 7.0    
Gross energy 22.5 21.9 21.5 20.8 20.2 19.7    
Apparent digestibility
Dry matter 56.0b 62.9a 57.6ab 58.9ab 59.0ab 56.6b 1.2 0.013
Crude protein 84.5 85.7 83.1 83.6 84.4 84.1 1.1 0.615
Crude fat 83.6b 85.9ab 88.4a 87.9a 84.5b 85.1ab 0.7 0.001
Starch - 42.8 36.0 34.5 35.1 35.8 3.7 0.513
Gross energy 63.9 71.9 67.7 66.5 69.8 64.2 1.2 0.213
Table 1: Chemical composition (% of DM), gross energy content (MJ/kg DM) and apparent digestibility (%) of experimental diets with increasing inclusion (0, 10, 15, 20, 25 and 30%) of wheat starch (WS) fed to Arctic charr Means with different superscript letters are significantly different (P<0.05).
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