Table 5.

Evidence for QTL significant at the 5% chromosome-wide level for traits related to muscularity and meat quality by chromosome obtained by F2 analysis. Estimated significance levels (F-value), position, % of F2 variance explained by each QTL, and gene effects.

Trait	SSC	Position [cM]	F-Value	% Variance1	Additive		Dominance
					Effect2	S.E.	Effect2	S.E.
pH24ML	1	21	6.9*	1.8	-0.027	0.007	-0.003	0.013
C1ML	2	56	5.88*	1.4	0.146	0.045	0.098	0.118
FOM	3	58	7.9**	2.1	1.66	0.49	1.69	0.78
MCOpto	3	0	13.4****	3.6	-1.74	0.35	0.57	0.51
FOM	4	80	19.0****	5.1	3.21	0.53	0.06	0.89
MAML	4	78	13.8****	3.7	1.27	0.25	0.47	0.42
pH24ML	4	90	6.4*	1.7	-0.022	0.007	-0.021	0.012
C1ML	4	26	5.4*	1.5	0.021	0.039	-0.248	0.076
MAML	6	175	11.4***	3.0	-0.99	0.23	0.52	0.35
C24ML	6	138	6.1*	1.5	-0.273	0.083	-0.285	0.184
pH1ML	13	76	5.9*	1.6	0.038	0.012	0.021	0.016
pH24ML	15	63	5.7*	1.5	-0.031	0.009	0.026	0.024
MCOpto	15	117	8.0***	2.2	-1.27	0.37	-0.89	0.50
pH24ML	18	66	4.8*	1.3	-0.019	0.007	-0.250	0.012

*: significant at the 5% chromosome-wide level, **: significant at the 1% chromosome-wide level, ***: significant at the 5% genome-wide level, ****: significant at the 1% genome-wide level

¹the fraction of phenotypic variance in the F2 explained by a QTL; calculated as the proportion of residual variance of the statistical models with and without the QTL effect

²positive values of additive genetic and dominance effects imply higher trait values forced by the Duroc allele;