Types of sectors, animal populations and events per farm depending on the farm type.

Farms are composed of one to four sectors, depending on their type: nucleus (SEL), multiplication (MU), farrow-to-finish (FF), farrowing (FA), farrowing post-weaning (FPW), post-weaning (PW), post-weaning finishing (PWF) and finishing (FI) farms. They can rear one or two populations (breeding sows, growing pigs). Six types of events can occur depending on the farm type: movement of sows from gestation to farrowing sector (ges-fa); piglet birth (birth); movement of sows from farrowing back to gestation sector (fa-ges); movement of piglets from farrowing to post-weaning sector (fa-pw); movement of growing pigs from post-weaning to finishing sector (pw-fi); movement of growing pigs leaving the finishing sector (fi).