Data were presented as means ± SEM (n = 8, one ejaculates per boar).a,bValues in the same column with different superscript letters denote significant differences among the different experimental period (P < 0.05).†Significant (P < 0.05) main effect of n-6:n-3 dietary ratio (6.6 vs. 14.4, 2.2) and vitamin E (400 vs. 200 mg/kg) respectively.*Significant (P < 0.05) main effect of n-6:n-3 dietary ratio (6.6 vs. 14.4, 2.2).