Alteration of Growth Performance, Antioxidant Capacity, Tissue Fatty Acid Profiles, and Lipid Metabolism of Mud Crab (Scylla paramamosain) Juvenile in Response to Different Dietary Arachidonic Acid Levels

Table 7

Muscle fatty acid composition of juvenile mud crab Scylla paramamosain fed with different dietary ARA levels (mg g^-1 dry matter).

Fatty acids	Dietary ARA levels (g kg^-1)						ANOVA	Linear		Quadratic
	0.40	2.50	4.60	8.90	12.50	15.70	value	value		value
14 : 0							0.135	0.097	0.111	0.044	0.252
16 : 0	^b	^d	^c	^a	^a	^a	0.000	0.000	0.637	0.000	0.615
18 : 0	^b	^a	^ab	^b	^b	^b	0.003	0.103	0.105	0.272	0.047
	^b	^c	^b	^a	^a	^a	0.000	0.000	0.711	0.000	0.698
16:1n-7	^d	^cd	^bc	^ab	^ab	0^a	0.000	0.000	0.808	0.000	0.881
18:1n-9	^c	^c	^b	^a	^a	^b	0.000	0.001	0.449	0.000	0.769
	^c	^c	^b	^a	^a	^ab	0.000	0.000	0.632	0.000	0.879
18:2n-6							0.214	0.047	0.176	0.107	0.159
20:4n-6	^a	^b	^c	^c	^d	^e	0.000	0.000	0.929	0.000	0.925
	^a	^b	^c	^c	^d	^e	0.000	0.000	0.927	0.000	0.922
18:3n-3	^a	^b	^a	^a	^a	^a	0.000	0.002	0.411	0.011	0.378
20:5n-3	^e	^c	^b	^cd	^de	^a	0.000	0.010	0.311	0.008	0.401
22:5n-3	^c	^bc	^abc	^ab	^abc	^a	0.001	0.000	0.605	0.001	0.588
22:6n-3	^c	^b	^a	^ab	^b	1.55 ± 0.03^ab	0.000	0.050	0.170	0.002	0.506
	^e	^cd	^b	^c	^d	^a	0.000	0.002	0.415	0.011	0.378
	^e	^cd	^b	^c	^d	^a	0.000	0.004	0.384	0.016	0.346
ARA/EPA^f	^a	^b	^c	^c	^d	^e	0.000	0.000	0.815	0.000	0.852
ARA/DHA^g	^a	^b	^c	^c	^d	^e	0.000	0.000	0.907	0.000	0.902

Data are presented as (). Values in the same row with different superscripts are significantly different (). Some fatty acids, of which the contents are minor, trace amount or not detected, such as 12 : 0, 20 : 0, 22 : 0, 24 : 0, 22:1n-9, 22:1n-11, 20:2n-6, 20:3n-6, 22:4n-6, 20:5n-6, and 20:3n-3, were not listed in this table. ^aSFA: saturated fatty acids; ^bMUFA: monounsaturated fatty acids; ^cn-6 PUFA: n-6 polyunsaturated fatty acids; ^dn-3 PUFA: n-3 polyunsaturated fatty acids; ^en-3 LC-PUFA: n-3 long chain poly-unsaturated fatty acid; ^fARA/EPA, the ratio of ARA to EPA; and ^gARA/DHA, the ratio of ARA to DHA.