Dr. Shawn Davidson offers key components of biosecurity and attempts to identify specific pathogens that are biosecurity risks. There should be a 30 to 60 day quarantine period for any new stock entering the herd to protect from organisms such as Strep suis and Haemophilus parasuis. The quarantine facility should ideally have its own staff. There should only be one source of breeding stock rather than multiple. 3.2 km between farms appears to be adequate to prevent area spread of diseases such as PRRS and Mycoplasma hypopneumoniae. The ability to put large distances between barns makes building an operation in Saskatchewan and Western Canada optimal. In regards to transportation, trucks should be thoroughly washed and dried to tackle possible PRRS, and load-out chutes should have a “point of no return” so that workers do not enter the trucks and vice versa. Personnel who do enter the barn should shower through and change into clothing supplied in order to prevent PRRS, TGE, and zoonotic diseases such as Salmonella and influenza. Semen brought in from external sources should be free of PRRS or PCV2, or at the minimum have a sufficient semen-monitoring program. Rodents (e.g. – rats, mice, birds, etc.) should be minimized, and any barn supplies that may pose a risk should be disinfected.