Table 2.
Fatty acids (FAs), vitamin E and mineral composition of the pasture grazed by the cattle from three pasture-based systems over 3 years.
| Nutrient | PP | GWC | MG | SED | P (F2,4) |
|---|---|---|---|---|---|
| Fatty acids (g/kg DM) | |||||
| C12:0 | 0.123 | 0.105 | 0.102 | 0.0157 | 0.431 |
| C14:0 | 0.180 | 0.153 | 0.145 | 0.0156 | 0.182 |
| C16:0 | 4.79 | 4.84 | 4.79 | 0.283 | 0.977 |
| C16:1n-7 | 0.057 | 0.057 | 0.059 | 0.0054 | 0.932 |
| C18:0 | 0.508 | 0.555 | 0.518 | 0.0514 | 0.655 |
| C18:1n-9 | 0.625 | 0.658 | 0.651 | 0.0876 | 0.926 |
| C18:1n-7 | 0.111 | 0.108 | 0.109 | 0.0042 | 0.797 |
| C18:2n-6 | 3.38 | 3.30 | 3.35 | 0.384 | 0.978 |
| C18:3n-3 | 17.6 | 16.0 | 16.1 | 1.63 | 0.599 |
| C20:0 | 0.167 | 0.172 | 0.169 | 0.0063 | 0.753 |
| Sum FAs | 33.0 | 31.2 | 31.4 | 2.59 | 0.742 |
| Vitamin (mg/kg DM) | |||||
| E | 33.1 | 40.4 | 35.1 | 5.98 | 0.509 |
| Macro minerals (g/kg DM) | |||||
| Ca | 5.75b | 7.81a | 4.72b | 0.554 | 0.012 |
| K | 28.2 | 29.1 | 29.8 | 1.51 | 0.644 |
| Mg | 1.73a | 1.75a | 1.40b | 0.067 | 0.010 |
| Na | 1.70b | 0.72b | 0.80a | 0.218 | 0.019 |
| P | 3.76 | 3.64 | 3.54 | 0.116 | 0.285 |
| S | 2.93 | 2.88 | 2.89 | 0.137 | 0.919 |
| Micro minerals (mg/kg DM) | |||||
| As | 0.096 | 0.153 | 0.164 | 0.0222 | 0.073 |
| Co | 0.058 | 0.173 | 0.135 | 0.0370 | 0.081 |
| Cr | 0.915 | 1.26 | 1.41 | 0.2230 | 0.193 |
| Cu | 8.41a | 7.70b | 7.13b | 0.252 | 0.018 |
| Fe | 154 | 311 | 270 | 49.1 | 0.071 |
| Mo | 2.04 | 1.38 | 1.27 | 0.370 | 0.218 |
| Mn | 120 | 105 | 106 | 10.5 | 0.361 |
| Ni | 1.19 | 1.48 | 2.03 | 0.404 | 0.223 |
| Se | 0.069 | 0.063 | 0.071 | 0.0082 | 0.630 |
| Zn | 27.4a | 23.8b | 24.0c | 0.69 | 0.011 |
| Non-nutritional elements (mg/kg DM) | |||||
| Al | 170 | 406 | 382 | 73.0 | 0.058 |
| Cd | 0.024 | 0.037 | 0.034 | 0.0070 | 0.257 |
| Pb | 0.161b | 0.341a | 0.282a | 0.0315 | 0.011 |
| Ti | 6.61 | 9.15 | 8.33 | 0.948 | 0.121 |
Abbreviations: PP = permanent pasture; GWC = grass and white clover; MG = short-term monoculture grass ley.
abcValues within a row with different superscripts differ significantly at P < 0.05.