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Table 2 Fibre characteristics in different muscle groups in carriers and non-carriers of the PRKAG3 mutation.

From: The influence of the PRKAG3 mutation on glycogen, enzyme activities and fibre types in different skeletal muscles of exercise trained pigs

 

m. semitendinosus

m. masseter

 

Carriers (n = 7)

Non-carriers (n = 6)

Carriers (n = 7)

Non-carriers (n = 7)

Fibre type (%)

    

I

16 ± 1

13 ± 4

28 ± 4

32 ± 4

IIA

4 ± 1

6 ± 1

70 ± 3

67 ± 4

IIB

80 ± 1

81 ± 4

2 ± 0

1 ± 1

Fibre area (μm2)

    

I

2388 ± 118

2386 ± 228

1659 ± 186

2142 ± 235

IIA

2574 ± 402

2905 ± 380

2127 ± 302

2264 ± 266

IIB

4574 ± 285

4504 ± 446

1429 ± 175

2192 ± 181

Relative fibre area (%)

    

I

9 ± 1

8 ± 1

24 ± 4

31 ± 4

IIA

3 ± 1

4 ± 0

74 ± 4

68 ± 4

IIB

88 ± 1

88 ± 1

1 ± 0

2 ± 1

  1. Fibre type composition was identified using myosin ATPase stains.
  2. Data as means ± SE.
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Acta Veterinaria Scandinavica

ISSN: 1751-0147