Table 5.

Porcine fertility variables (mean ± SEM.) by sire genetic line (percentage variation with respect to Pietrain in brackets).

Sire Line	Total Born per Litter	Piglets Born Alive	Stillbirth	Number of Mummies	Litter Weight at Birth (kg)
Pietrain	8.93 ± 0.93	8.74 ± 0.97	0.28 ± 0.11 b	0.13 ± 0.09	13.88 ± 1.45
Duroc × Pietrain	10.27 ± 0.65 (115.01%)	9.08 ± 0.61 (103.89%)	0.74 ± 0.16 a (264.29%)	0.24 ± 0.07 (184.61%)	15.58 ± 0.90 (112.2%)

SEM: standard error of the mean. ^a–b Different letters indicate differences between sire lines. p <0.05.