Table 3.
The effects of FRS and NRS on fatty acid composition of duck breast muscle.
| Items1 | Breast muscle |
|||
|---|---|---|---|---|
| 8w |
13w |
|||
| FRS | NRS | FRS | NRS | |
| C12:0 | – | – | – | – |
| C13:0 | 0.165 ± 0.026 | 0.115 ± 0.026 | 0.181 ± 0.024 | 0.224 ± 0.028 |
| C14:0 | 0.670 ± 0.069c | 0.839 ± 0.075b,c | 1.066 ± 0.144a,b | 1.238 ± 0.121a |
| C15:0 | 0.100 ± 0.007 | 0.110 ± 0.010 | 0.146 ± 0.017 | 0.146 ± 0.013 |
| C16:0 | 32.990 ± 2.064c | 39.615 ± 2.994b,c | 46.758 ± 5.080a,b | 52.392 ± 3.997a |
| C17:0 | 0.259 ± 0.015b | 0.265 ± 0.015b | 0.346 ± 0.038a | 0.394 ± 0.029a |
| C18:0 | 18.882 ± 0.681 | 20.443 ± 0.970 | 21.001 ± 1.619 | 22.885 ± 1.345 |
| C20:0 | 0.270 ± 0.015 | 0.289 ± 0.016 | 0.256 ± 0.024 | 0.268 ± 0.020 |
| C21:0 | – | – | – | 0.050 ± 0.007 |
| C22:0 | 0.284 ± 0.048 | 0.542 ± 0.0722 | 0.37 ± 0.049 | 0.279 ± 0.039 |
| C24:0 | - | - | 0.282 ± 0.031 | 0.239 ± 0.039 |
| ƩSFA | 53.633 ± 2.733c | 62.241 ± 4.036b,c | 70.375 ± 6.951a,b | 78.017 ± 5.486a |
| C14:1 | 0.078 ± 0.012 | 0.078 ± 0.009 | 0.098 ± 0.014 | 0.117 ± 0.016 |
| C16:1 | 2.409 ± 0.266c | 3.903 ± 0.460b,2 | 4.980 ± 0.555a,b | 5.591 ± 0.517a |
| C17:1 | 0.735 ± 0.058 | 0.809 ± 0.033 | 0.978 ± 0.054 | 1.089 ± 0.084 |
| C18:1(n-9)t | 0.500 ± 0.042 | 0.667 ± 0.0552 | 0.620 ± 0.063 | 0.722 ± 0.060 |
| C18:1(n-9)c | 43.217 ± 3.896c | 58.517 ± 6.407b,c | 64.657 ± 7.981a,b | 81.327 ± 7.215a |
| C20:1 | 0.501 ± 0.046 | 0.587 ± 0.047 | 0.543 ± 0.073 | 0.636 ± 0.070 |
| C22:1(n-9) | 0.123 ± 0.008 | 0.133 ± 0.009 | 0.116 ± 0.016 | 0.120 ± 0.010 |
| ƩMUFA | 47.517 ± 4.249c | 64.685 ± 6.980b,c | 71.991 ± 8.704a,b | 89.601 ± 7.881a |
| C18:2(n-6)t | – | – | 0.083 ± 0.007 | 0.093 ± 0.011 |
| C18:2(n-6)c | 33.501 ± 2.180b | 37.131 ± 2.842b | 50.402 ± 5.993a | 56.830 ± 4.054a |
| C18:3(n-6) | 0.201 ± 0.029b | 0.215 ± 0.026b | 0.246 ± 0.033a,b | 0.301 ± 0.027a |
| C20:2(n-6) | 0.924 ± 0.048a | 0.891 ± 0.030a | 0.677 ± 0.054b | 0.699 ± 0.065b |
| C20:3(n-6) | 1.478 ± 0.100a | 1.509 ± 0.089a | 1.084 ± 0.072b | 1.083 ± 0.083b |
| C20:4(n-6) | 39.859 ± 1.999b | 39.107 ± 3.779b | 41.216 ± 3.863b | 52.283 ± 2.618a,2 |
| Ʃn-6 | 75.981 ± 3.342b | 78.853 ± 5.871b | 93.666 ± 8.645b | 111.235 ± 6.041a,2 |
| C18:3(n-3) | 1.101 ± 0.107c | 1.345 ± 0.128b,c | 1.802 ± 0.267a,b | 2.055 ± 0.152a |
| C20:3(n-3) | 0.126 ± 0.015 | 0.107 ± 0.013 | 0.108 ± 0.014 | 0.125 ± 0.012 |
| C20:5(n-3) | 0.290 ± 0.025b | 0.388 ± 0.032a,2 | - | 0.053 ± 0.012c |
| C22:6(n-3) | 2.273 ± 0.163b | 2.509 ± 0.247b | 2.502 ± 0.136b | 3.300 ± 0.258a,2 |
| Ʃn-3 | 3.781 ± 0.219b | 4.348 ± 0.319b | 4.431 ± 0.342b | 5.493 ± 0.304a,2 |
| ƩPUFA | 79.763 ± 3.512b | 83.201 ± 6.157b | 98.097 ± 8.962b | 116.727 ± 6.206a,2 |
| ƩMUFA/ƩSFA | 0.866 ± 0.035c | 1.010 ± 0.042b,2 | 1.002 ± 0.026b | 1.134 ± 0.035a,2 |
| ƩPUFA/ƩSFA | 1.513 ± 0.061 | 1.353 ± 0.086 | 1.443 ± 0.084 | 1.535 ± 0.057 |
| Ʃn-6/Ʃn-3 | 20.433 ± 0.688 | 18.289 ± 0.580 | 21.028 ± 0.888 | 20.623 ± 0.972 |
a-cIndicated a significance (P ＜0.05) of Duncan's multiple-range tests among 8w-FRS, 8w-NRS, 13w-FRS, and 13w-NRS in breast muscle.
Abbreviations: FRS, floor rearing system; MUFA, monounsaturated fatty acid; NRS, net rearing system; PUFA, polyunsaturated fatty acids; SFA, saturated fatty acid; 8w, eight week; 13w, 13th week.
1
The items displayed in the table were selected from 35 kinds of fatty acids with detectable rates higher than 30%, otherwise were not shown in the table or displayed in “–”.
2
Indicated a significance between FRS ducks and NRS ducks at the certain age of 8w or 13w.