Table 6.

Effects of dietary carbohydrate and lipid levels on the activity levels or concentrations of enzymes involved in carbohydrate and lipid metabolism in two strains of gibel carp.

Diet	Strain	HK (U/gprot)1	P (U/gprot)2	PEPCK (U/mgprot)3	HL (U/mgprot)4	LPL (U/mgprot)5	ACC (ng/mgprot)6	FAS (ng/mgprot)7
HCLL	A	7.63 ± 2.06	115.6 ± 18.42	5.57 ± 1.33	1.98 ± 0.20	2.15 ± 0.39	0.32 ± 0.08	3.26 ± 0.79
	F	8.63 ± 3.69	99.84 ± 9.83	4.33 ± 0.47	1.59 ± 0.17	1.92 ± 0.32	0.31 ± 0.05	4.09 ± 0.81
MCML	A	7.91 ± 6.29	72.05 ± 15.41	3.96 ± 0.27	1.77 ± 0.47	2.20 ± 0.22	0.28 ± 0.04	4.70 ± 1.51
	F	13.6 ± 7.15	102.49 ± 11.46	4.52 ± 0.22	1.97 ± 0.91	1.15 ± 0.09	0.26 ± 0.04	4.05 ± 0.49
LCHL	A	6.58 ± 1.97	88.18 ± 25.41	3.79 ± 0.39	0.86 ± 0.14	0.97 ± 0.15	0.09 ± 0.02	1.51 ± 0.30
	F	6.59 ± 2.64	70.26 ± 19.12	3.57 ± 0.80	1.29 ± 0.42	0.86 ± 0.26	0.15 ± 0.02	1.97 ± 0.35
MEANS OF MAIN EFFECT
Diet
HCLL		8.13 ± 1.41Y				2.04 ± 0.19Y	0.31 ± 0.03Y	3.67 ± 0.57Y
MCML		10.75 ± 1.50Y				1.68 ± 0.18Y	0.27 ± 0.03Y	4.37 ± 0.57Y
LCHL		6.59 ± 1.63X				0.91 ± 0.19X	0.12 ± 0.03X	1.74 ± 0.57X
Strain
A						1.77 ± 0.15B
F						1.31 ± 0.15A
P	Strain	0.220	0.940	0.550	0.840	0.039	0.808	0.754
	Diet	0.040	0.240	0.130	0.205	0.001	<0.001	0.009
	S × D	0.390	0.260	0.350	0.697	0.154	0.668	0.641

HCLL, High Carbohydrate Low Lipid, 45% carbohydrate, 2% lipid; MCML, Medium Carbohydrate Medium Lipid, 30% carbohydrate, 8% lipid; LCHL, Low Carbohydrate High Lipid, 15% carbohydrate, 14% lipid.

¹HK, hexokinase.

²PK, pyruvate kinase.

³PEPCK, phosphoenolpyruvate carboxykinase.

⁴HL, hepatic lipase.

⁵LPL, lipoprotein lipase.

⁶ACC, acetyl-CoA carboxylase.

⁷FAS, fatty acid synthase.

Values are expressed as means ± s.e.m. (n = 6). Significant differences among all groups are indicated by different superscripts on each column (a, b, or c) (P < 0.05). The uppercase letters A and B represent significant differences between strains; and the uppercase letters X, Y, and Z represent significant differences among diets (P < 0.05).