Table 1. Correlation coefficients (r) between muscle fiber characteristics and growth rate or carcass productivity traits in porcine longissimus dorsi muscle.

	Carcass weight	Carcass yield	Loin area	Back-fat thickness	Average daily gain	Days at 90 kg body weight	Body weight in 100 days after birth
Muscle fiber number
Total fiber number	0.256***	0.055	0.627***	0.143*	0.241***	−0.215**	0.123†
Type I number	0.088	0.120†	0.244***	0.059	0.046	−0.009	0.002
Type IIA number	0.289***	0.067	0.428***	0.221***	0.154*	−0.191**	0.162*
Type IIB number	0.196**	0.023	0.540***	0.094	0.219***	−0.193**	0.100
Proportion of muscle fiber number
Proportion of type I number	−0.053	0.088	−0.098	−0.016	−0.091	0.123†	−0.054
Proportion of type IIA number	0.171**	0.016	0.112†	0.176**	0.026	−0.077	0.095
Proportion of type IIB number	−0.096	−0.073	−0.016	−0.125†	0.044	−0.023	−0.038
Cross sectional area of muscle fiber
Mean area	0.434***	0.050	0.921***	0.260***	0.347***	−0.339***	0.259***
Type I area	0.299***	0.002	0.407***	0.190**	0.222**	−0.210**	0.089
Type IIA area	0.351***	0.002	0.548***	0.311***	0.332***	−0.305***	0.283***
Type IIB area	0.384***	0.020	0.884***	0.237***	0.305***	−0.299***	0.236***
Proportion of muscle fiber area
Proportion of type I area	−0.114	−0.017	−0.060	−0.101	−0.074	0.069	−0.058
Proportion of type IIA area	0.156*	−0.135†	0.134†	0.217**	0.178*	−0.157*	0.168*
Proportion of type IIB area	−0.044	0.115	−0.063	−0.099	−0.088	0.075	−0.090

^†p< 0.1, *p<0.05, **p<0.01, ***p<0.001.