Table 1.
Comparison of MyHC protein expression in LM of pigs with different postnatal ages
| 7 days | 30 days | 60 days | 120 days | 180 days | ||
|---|---|---|---|---|---|---|
| MyHC I | Contents (pg/mg) | 9.83±0.51a | 7.71±0.66 b | 7.95±1.52 b | 5.75±0.36 c | 6.02±0.96 c |
| Relative proportion (%) | 12.19±0.76a | 9.74±1.00b | 7.86±1.55b | 5.96±0.33c | 6.15±0.80c | |
| MyHC IIa | Contents (pg/mg) | 12.36±1.43b | 25.03±1.94a | 26.94±2.37a | 22.64±2.19a | 25.37±4.52a |
| Relative proportion (%) | 18.74±4.02b | 32.28±0.99a | 16.30±0.25b | 19.88±1.55b | 23.84±3.55b | |
| MyHC IIx | Contents (pg/mg) | 15.11±3.11c | 25.59±1.38a | 16.51±1.26c | 19.47±1.67b | 23.24±2.91a |
| Relative proportion (%) | 15.30±1.56b | 31.55±1.41a | 26.61±2.40a | 23.80±2.47a | 25.81±3.19a | |
| MyHC IIb | Contents (pg/mg) | 53.27±4.29a | 28.65±0.40b | 57.81±3.28a | 54.61±1.89a | 49.20±3.18a |
| Relative proportion (%) | 65.96±4.32a | 36.18±1.03c | 57.09±2.97b | 56.62±1.08b | 50.35±3.22b |
MyHC, myosin heavy-chain; LM, longissimus muscle.
Comparison of the data among different ages, the same letters mean no significant difference between them (p>0.05), the different letters mean the significant difference (p<0.05).