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).不同类型的猪场包含1至4个养殖分区，涵盖核心场（nucleus, SEL）、扩繁场（multiplication, MU）、自繁自养场（farrow-to-finish, FF）、分娩场（farrowing, FA）、分娩-断奶场（farrowing post-weaning, FPW）、断奶后饲养场（post-weaning, PW）、断奶育肥场（post-weaning finishing, PWF）以及育肥场（finishing, FI）。此类猪场可饲养1或2类种群：种母猪（breeding sows）与生长猪（growing pigs）。依据猪场类型的差异，可发生6类事件：母猪从妊娠分区转移至分娩分区（ges-fa）、仔猪分娩（birth）、母猪从分娩分区返回妊娠分区（fa-ges）、仔猪从分娩分区转移至断奶后饲养分区（fa-pw）、生长猪从断奶后饲养分区转移至育肥分区（pw-fi）以及生长猪离开育肥分区（fi）。