Table 5.
Fatty acid profile in longissimus dorsi muscle of Xiangcun black finishing pigs fed the diets with various levels of mulberry powder (%, dry matter basis).
Item | Mulberry inclusion level, % |
SEM |
P-value |
||||||
---|---|---|---|---|---|---|---|---|---|
0 | 3 | 6 | 9 | 12 | ANOVA | Linear | Quadratic | ||
Fatty acid composition | |||||||||
C14:0 | 1.63ab | 1.68a | 1.59abc | 1.51bc | 1.43c | 0.05 | 0.02 | <0.01 | <0.01 |
C16:0 | 28.81a | 28.44ab | 27.84abc | 27.00bc | 26.38c | 0.51 | 0.01 | <0.01 | <0.01 |
C16:1 | 4.08 | 4.07 | 4.01 | 3.51 | 3.60 | 0.19 | 0.10 | 0.01 | 0.05 |
C17:0 | 0.20c | 0.22bc | 0.25abc | 0.29a | 0.27ab | 0.02 | 0.01 | <0.01 | <0.01 |
C18:0 | 13.98 | 13.25 | 13.91 | 13.67 | 12.86 | 0.41 | 0.27 | 0.16 | 0.30 |
C18:1 | 41.36 | 42.4 | 41.69 | 42.57 | 42.92 | 0.88 | 0.71 | 0.23 | 0.49 |
C18:2n-6 | 7.10c | 7.35bc | 7.89bc | 8.51ab | 9.23a | 0.43 | 0.01 | <0.01 | <0.01 |
C20:0 | 0.21 | 0.19 | 0.20 | 0.19 | 0.19 | 0.01 | 0.66 | 0.22 | 0.44 |
C20:1 | 0.96a | 0.68ab | 0.83ab | 0.93a | 0.61b | 0.10 | 0.07 | 0.18 | 0.39 |
C18:3n-3 | 0.51b | 0.49b | 0.57b | 0.90a | 0.85a | 0.09 | <0.01 | <0.01 | <0.01 |
C20:3n-6 | 0.21b | 0.22b | 0.24ab | 0.23b | 0.30a | 0.02 | 0.07 | 0.01 | 0.03 |
C20:4n-6 | 1.21b | 1.24b | 1.26b | 1.14b | 1.79a | 0.14 | 0.02 | 0.04 | 0.02 |
Partial sums of fatty acids | |||||||||
SFA | 44.83a | 43.79a | 43.78a | 42.66ab | 41.13b | 0.77 | 0.02 | <0.01 | <0.01 |
MUFA | 46.40 | 47.15 | 46.53 | 47.01 | 47.13 | 0.83 | 0.95 | 0.60 | 0.87 |
PUFA | 9.03b | 9.30b | 9.97b | 10.78ab | 12.17a | 0.59 | <0.01 | <0.01 | <0.01 |
PUFA:SFA ratio | 0.20c | 0.21bc | 0.23bc | 0.25ab | 0.30a | 0.02 | <0.01 | <0.01 | <0.01 |
∑n-6:∑n-3 ratio | 16.86ab | 18.48a | 18.02a | 11.76b | 16.08ab | 1.74 | 0.07 | 0.16 | 0.38 |
Indices | |||||||||
h:H ratio1 | 1.66c | 1.72bc | 1.76bc | 1.88ab | 1.99a | 0.06 | <0.01 | <0.01 | <0.01 |
AI2 | 0.64a | 0.63ab | 0.61ab | 0.57bc | 0.54c | 0.02 | <0.01 | <0.01 | <0.01 |
TI3 | 1.53a | 1.48ab | 1.46ab | 1.36bc | 1.29c | 0.05 | <0.01 | <0.01 | <0.01 |
SFA = saturated fatty acids; MUFA = monounsaturated fatty acids; PUFA = polyunsaturated fatty acids; h:H ratio = hypocholesterolaemic-to-hypercholesterolaemic fatty acids ratio; AI = atherogenicity index; TI = thrombogenicity index.
a, b, c Within a row, values with different superscript letters differ (P < 0.05). n = 6.
h:H ratio = ([C18:1] + [C18:2] + [C18:3] +[C20:3] + [C20:4])/([C14:0 + [C16:0]), where the brackets indicate the concentrations.
AI = (4 × [C14:0] + [C16:0])/(n-6 PUFA + n-3 PUFA + MUFA), where the brackets indicate the concentrations.
TI = ([C14:0] + [C16:0] + [C18:0])/(0.5 × MUFA + 0.5 × n-6 PUFA + 3 × n-3 PUFA + n-3 PUFA/n-6 PUFA), where the brackets indicate the concentrations.