The herd is located in the Center region of Portugal, at latitude
39.649478 and longitude −8.307067. The herd structure is
constituted by three buildings: two “grow-finishing” buildings
and one with the gestation room, the farrowing rooms and the
nurseries. It is operated as a closed herd which comprises
approximately 480 sows, 1500 weaned piglets and 2000
growing-finishing pigs. The gilt reposition has external origin.
The commercial pigs were based on Large white (X Landrace) X
Pietrain breeds.