Table 5. P-values for two-period comparisons in commercial and Piau pigs. The ANOVA results (F-test) for these genes showed a significant Breed x Period interaction.

Genes	Breed	Comparisons
		21d x 40d a	21d x 70d	21d x 90d	40d x 70d	40d x 90d	70d x 90d
CSRP3	Commercial	0.0032	0.0003	0.0003	0.2524	0.3070	0.8964
	Piau	0.0309	0.0029	0.0035	0.2719	0.3062	0.9365
LEF1	Commercial	0.5880	0.0049	0.0058	0.0155	0.0183	0.9356
	Piau	0.0257	0.0045	0.0007	0.4091	0.1052	0.3973
MRAS	Commercial	0.0575	0.8639	0.3663	0.0412	0.0089	0.4609
	Piau	0.1992	0.3261	0.1414	0.0318	0.0107	0.6007
MYOG	Commercial	0.0026	0.0002	0.0012	0.2565	0.7099	0.4366
	Piau	0.0001	0.0006	0.0004	0.4341	0.5396	0.8629

^a21d, 40d, 70d and 90d indicate the prenatal ages. Values in bold were statistically significant (p < 0.05) by Student's t-test.