Table 1.
Chemical composition in muscles of pure Iberian pigs exposed during 28 days to different ambient temperature.
| Longissimus | Gluteus | p-Value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| TN | TN-pf | HS | TN | TN-pf | HS | SEM 1 | Treatment (T) | Muscle (M) | T × M | |
| Dry matter (%) | 27.6b | 25.9a | 26.4a | 30.4b | 27.9a | 30.1b | 0.21 | 0.0008 | 0.0001 | 0.2602 |
| Protein (%) | 21.6 | 22.1 | 21.2 | 23.6 | 23.5 | 23.9 | 0.35 | 0.9581 | 0.0052 | 0.7369 |
| IMF 2 (%) | 6.61b | 4.77a | 5.87b | 9.69b | 5.91a | 8.15b | 0.21 | 0.0027 | 0.0012 | 0.4516 |
| Ash (%) | 1.97 | 1.95 | 2.04 | 1.59 | 1.76 | 1.67 | 0.05 | 0.7930 | 0.0045 | 0.7226 |
| Energy (kcal/100 g) | 170b | 153a | 160a | 196b | 168a | 189ab | 2.3 | 0.0013 | 0.0001 | 0.3963 |
| Fe (mg/kg) | 7.05 | 7.82 | 7.43 | 9.08 | 10.0 | 10.1 | 0.28 | 0.4120 | 0.0002 | 0.8893 |
| Zn (mg/kg) | 15.4a | 14.4a | 16.9b | 16.2a | 15.2a | 18.9b | 0.26 | 0.0001 | 0.0288 | 0.5486 |
TN, pigs reared at thermoneutral conditions (20 °C) and fed ad libitum, TN-pf, pigs reared at thermoneutral conditions (20 °C) and pair-fed to HS group, HS, pig reared at heat stress conditions (30 °C) and fed ad libitum. 1 SEM: mean standard error, 2 IMF: intramuscular fat. Different letters indicate significant differences between treatments in each muscle (p < 0.05, two-way ANOVA and LSD test).