Table 4.

Eight concerns of a typical pig farm biosecurity system.

Concern Point	Key Technical Points
Location and layout	The primary principle of location selection for a pig farm is to keep it away from other pig farms, slaughterhouses, residential areas, and transportation lines.
Gilt introduction safety	Pig producers should reduce or stop gilt introduction. Otherwise, ASFV negative gilts must be introduced by air filtration transportation and under strict monitoring.
Set up a fence	A fence around a pig farm can act as a physical barrier to prevent outsiders from entering the pig farm area and to keep animals away from pigs.
Routine disinfection	Effective disinfection requires the right disinfectants, disinfection method, working concentration and duration, suitable operating temperature of the disinfectants, and carefully designed pre-disinfection cleaning and strict post-disinfection monitoring.
Vehicle and goods drying center	ASFV is sensitive to high temperature, and thus, a closed drying room for vehicle and good disinfection at 60 °C (>20 min) is very useful to ensure complete inactivation of ASFV.
Staff entrance corridor and isolation room	Well-designed staff entrances and isolation rooms divided into three parts, including a dirty area, transition zone, and clean area, need to be constructed to reduce the risk of employees bringing in ASFV.
Disposal of sick and dead pigs	Autopsies must be prohibited in or around pig farms and samples of suspected pigs should be collected and tested in a specified facility outside the farm as soon as possible in compliance with the regulations for safe sampling, transportation, and testing of high-risk pathogens.
Feed safety	Stop swill feeding, develop new feed production technology to inactivate possible ASFV existing in feed ingredients or complete feed, and ensure the safety of porcine serum protein powder.