Table 8.

Mean and SD of internal (INT), external (EXT), and total (TOT) biosecurity scores for the different types of farm.

	Breeders, weaners, and fatteners (N = 22)	Breeders only or breeders and weaners (N = 6)	Weaners and fatteners (N = 9)	Fatteners only (N = 9)
EXT	73.0 (±7.17)	79.3 (±2.86)	74.1 (±12.22)	75.4 (±6.01)
INT	55.3 (13.3)	58.1 (5.42)	66.0 (20.63)	69.3 (7.96)
TOT	64.2 (8.87)	68.7 (2.97)	70.0 (16.11)	72.3 (5.13)

The scores are out of a maximum of 100 for a sample of pig farms in Great Britain visited in 2015–2016.