Table 3. Effect of dietary treatments on final body composition (on fresh weight basis) of rainbow trout fed the experimental diets for 6 weeks¹.

		Final body composition
Unit in g kg−1	Initial bodycomposition	Diets2					P- value
		HP/EF	HP/EC	LP/EF	LP/EC	Pooled SEM	P/E ratio	NPE source	P/E×NPE
Dry matter (DM)	220	278	251	285	257	4.1	0.125	<0.001	0.871
Protein	153	156	162	143	140	3.4	<0.001	0.632	0.263
Fat	34	94	61	111	81	3.9	0.001	<0.001	0.684
Ash	26	21a	21a	19b	20ab	0.5	0.008	0.223	0.042
Energy (kJ g−1)	5.0	7.5	6.3	8.1	6.8	0.16	0.015	<0.001	0.913

¹Values represent least squares (LS) means (n = 3), row means with different superscript letters were significantly different and assigned only if interaction effect was significant (P<0·05).

²H_P/EF - High P/E ratio diet with fat as main non-protein energy source; H_P/EC - High P/E ratio diet with carbohydrate as main non-protein energy source; L_P/EF - Low P/E ratio diet with fat as main non-protein energy source; L_P/EC - Low P/E ratio diet with carbohydrate as main non-protein energy source.