. 2022 Aug 25;13:109. doi: 10.1186/s40104-022-00747-7

Table 4.

The fatty acid profile (% of total fatty acids) in the muscle of grass carp fed with different dietary protein

Items	Dietary protein levels						Linear		Quadratic
Items	15.91%	19.39%	22.10%	25.59%	28.53%	31.42%	F	P	F	P
C14:0	2.22 ± 0.39	2.51 ± 0.21	2.36 ± 0.12	2.41 ± 0.23	2.42 ± 0.08	2.49 ± 0.13	2.51	0.12	0.30	0.58
C14:1	0.13 ± 0.03	0.15 ± 0.01	0.13 ± 0.01	0.14 ± 0.01	0.14 ± 0.01	0.15 ± 0.01	1.31	0.26	0.48	0.50
C15:0	0.21 ± 0.02^a	0.22 ± 0.02^ab	0.21 ± 0.01^a	0.23 ± 0.01^b	0.23 ± 0.02^b	0.25 ± 0.01^c	28.30	< 0.01	3.03	0.10
C16:0	21.15 ± 0.34	20.86 ± 0.56	20.56 ± 0.68	20.70 ± 0.42	20.71 ± 0.38	21.21 ± 0.59	0.00	0.99	7.48	< 0.05
C16:1	11.96 ± 0.85^ab	12.11 ± 1.00^b	11.45 ± 0.67^ab	11.08 ± 0.42^a	11.31 ± 0.85^ab	11.21 ± 0.76^ab	6.06	< 0.05	0.65	0.43
C17:0	0.36 ± 0.03^a	0.36 ± 0.04^a	0.37 ± 0.03^ab	0.40 ± 0.02^b	0.39 ± 0.03^ab	0.39 ± 0.02^ab	9.42	< 0.01	0.66	0.42
C17:1	0.25 ± 0.01^ab	0.25 ± 0.02^ab	0.26 ± 0.02^ab	0.27 ± 0.01^b	0.20 ± 0.10^ab	0.18 ± 0.12^a	5.53	< 0.05	2.70	0.11
C18:0	3.89 ± 0.18	3.85 ± 0.30	4.01 ± 0.11	4.13 ± 0.10	4.11 ± 0.40	4.00 ± 0.29	2.67	0.11	1.29	0.26
C18:1n9t	0.35 ± 0.05^a	0.39 ± 0.05^a	0.37 ± 0.04^a	0.43 ± 0.07^a	0.41 ± 0.12^a	0.57 ± 0.11^b	20.27	< 0.01	3.92	0.06
C18:1n9c	32.54 ± 3.20^a	37.21 ± 2.58^b	37.97 ± 1.07^b	36.94 ± 2.03^b	36.92 ± 2.00^b	37.12 ± 1.22^b	8.22	< 0.01	10.03	< 0.01
C18:2n6c	9.54 ± 1.35	9.93 ± 1.09	10.58 ± 1.65	10.30 ± 0.75	10.26 ± 0.60	10.24 ± 0.90	1.22	0.23	1.34	0.26
C20:0	0.14 ± 0.02^a	0.15 ± 0.01^ab	0.16 ± 0.01^b	0.16 ± 0.02^b	0.14 ± 0.02^ab	0.14 ± 0.01^ab	0.03	0.87	7.90	< 0.01
C18:3n6	0.17 ± 0.02^a	0.18 ± 0.01^ab	0.21 ± 0.04^b	0.20 ± 0.02^ab	0.19 ± 0.02^ab	0.19 ± 0.01^ab	1.10	0.30	5.46	< 0.05
C20:1n9	0.15 ± 0.01^a	0.17 ± 0.01^b	0.17 ± 0.02^b	0.16 ± 0.01^ab	0.16 ± 0.01^ab	0.16 ± 0.01^ab	0.33	0.57	2.28	0.14
C18:3n3	0.97 ± 0.13^a	1.07 ± 0.11^ab	1.11 ± 0.14^b	1.09 ± 0.09^ab	1.08 ± 0.06^ab	1.04 ± 0.06^ab	0.82	0.37	5.58	< 0.05
C20:2	0.60 ± 0.06	0.55 ± 0.05	0.61 ± 0.10	0.57 ± 0.02	0.62 ± 0.08	0.65 ± 0.11	2.40	0.13	1.33	0.25
C22:0	1.08 ± 0.23^b	0.89 ± 0.09^ab	0.82 ± 0.20^a	0.86 ± 0.18^a	0.94 ± 0.16^ab	0.96 ± 0.10^ab	0.53	0.47	7.30	< 0.05
C20:3n6	0.87 ± 0.19^b	0.63 ± 0.11^a	0.68 ± 0.07^a	0.67 ± 0.07^a	0.68 ± 0.08^a	0.65 ± 0.07^a	7.17	< 0.05	4.99	< 0.05
C20:3n3	0.11 ± 0.03	0.12 ± 0.02	0.12 ± 0.01	0.12 ± 0.01	0.11 ± 0.04	0.11 ± 0.02	0.00	0.98	0.62	0.43
C23:0	1.96 ± 0.87^b	1.03 ± 0.42^a	0.98 ± 0.25^a	1.07 ± 0.36^a	1.12 ± 0.37^a	1.04 ± 0.22^a	7.10	< 0.05	6.85	< 0.05
C22:2	0.25 ± 0.04^b	0.27 ± 0.02^b	0.26 ± 0.03^b	0.27 ± 0.03^b	0.18 ± 0.11^ab	0.15 ± 0.13^a	8.63	< 0.01	4.14	0.05
C20:5n3	1.97 ± 0.62^b	1.46 ± 0.29^a	1.37 ± 0.26^a	1.48 ± 0.25^a	1.46 ± 0.19^a	1.36 ± 0.12^a	6.90	< 0.05	3.53	0.07
C22:6n3	8.73 ± 3.43^b	5.22 ± 1.53^a	4.84 ± 1.43^a	5.83 ± 1.52^a	5.82 ± 1.43^a	5.32 ± 1.13^a	4.82	< 0.05	5.36	< 0.05
∑SFA	31.25 ± 0.48^c	30.14 ± 1.13^ab	29.73 ± 0.84^a	30.28 ± 0.57^ab	30.30 ± 0.42^ab	30.77 ± 0.63^bc	0.33	0.57	12.74	< 0.01
∑UFA	68.75 ± 0.48^a	69.86 ± 1.13^bc	70.27 ± 0.84^c	69.72 ± 0.57^bc	69.70 ± 0.42^bc	69.23 ± 0.63^ab	0.33	0.57	12.74	< 0.01
∑MUFA	45.46 ± 3.73^a	50.35 ± 2.85^b	50.41 ± 1.33^b	49.08 ± 1.86^b	49.23 ± 1.87^b	49.47 ± 1.74^b	3.61	0.07	6.62	< 0.05
∑PUFA	23.26 ± 3.35^b	19.48 ± 2.21^a	19.82 ± 1.39^a	20.59 ± 1.37^a	20.44 ± 1.90^a	19.74 ± 1.94^a	3.65	0.07	2.84	0.10

Values are means ± SD and n = 6 for each group. ^a-c Different superscripts in the same row indicate significantly difference (P < 0.05)