Diets    
  WS 0 WS 10 WS 15 WS 20 WS 25 WS 30 SEM P-value
Content as analysed
Crude protein 42.4 46.7 45.7 43.1 42.2 40.6    
Crude fat 19.2 18.6 16.7 14.4 10.7 8.0    
Starch 0.6 8.7 13.5 17.7 21.7 26.9    
Ash 7.2 7.8 7.6 7.3 7.2 7.0    
Gross energy 22.5 22.1 21.9 20.1 20.2 19.4    
Apparent digestibility
Dry matter 62.5b 69.8a 68.2a 66.0ab 66.1ab 65.1ab 1.2 0.007
Crude protein 91.7 89.5 87.8 91.8 90.0 89.6 1.9 0.704
Crude fat 86.5 88.7 87.1 91.8 88.9 90.1 1.9 0.436
Starch - 68.0a 57.3b 53.6b 54.1b 58.9b 1.7 0.001
Gross energy 70.1b 76.2a 73.6ab 73.0ab 71.4ab 70.2ab 1.4 0.038
Table 2: 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%) wheat starch (WS) fed to Eurasian perch Means with different superscript letters are significantly different (P<0.05).
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