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Table 2 Body weight and muscle fiber properties (population and area) before and after training of Thoroughbred horses in each genotype (g.66493737C/T: T/T, C/T and C/C genotypes)

From: Effect of Myostatin SNP on muscle fiber properties in male Thoroughbred horses during training period

  Before training After training
T/T C/T C/C T/T C/T C/C
Body weight (kg) 444 ± 8.4 438 ± 6.8 470 ± 6.5 467 ± 7.8* 452 ± 6.2* 486 ± 7.4*
Population (%)
 Type I 11.1 ± 1.9 13.7 ± 2.8 7.5 ± 1.9 15.7 ± 11.1 13.8 ± 9.1 9.4 ± 6.5
 Type IIa 40.4 ± 4.5 41.5 ± 3.5 40.8 ± 2.6 48.7 ± 5.9 45.8 ± 6.4 45. 5 ± 7.8
 Type IIx 48.5 ± 5.2 44. 8 ± 2.6 51.7 ± 2.5 35.6 ± 12.7 * 40.4 ± 10.7 45.1 ± 9.4
Area (μm2)
 Type I 2230 ± 186 1749 ± 64 2487 ± 300 2577 ± 291 2445 ± 299 2626 ± 284
 Type IIa 2543 ±179 2522 ± 174 2202 ± 158 2753 ± 129 2838 ± 218 2816 ± 331
 Type IIx 3939 ± 299 3538 ± 298 3832 ± 332 4233 ± 450 3898 ± 378 4647 ± 325 *
  1. Values are mean ± SEM (n = 9 in each group)
  2. * Significant difference (P < 0.05) between before and after training in same genotype group