gross energy content and apparent digestibility

	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	62.5^b	69.8^a	68.2^a	66.0^ab	66.1^ab	65.1^ab	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	-	68.0^a	57.3^b	53.6^b	54.1^b	58.9^b	1.7	0.001
Gross energy	70.1^b	76.2^a	73.6^ab	73.0^ab	71.4^ab	70.2^ab	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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