Table 5.

Description of Internal, External biosecurity score, their respective subcategory scores, and the total biosecurity scores for a sample of fattening and breeding pig farms in Great Britain visited in 2015–2016.

	Fattening pig farms (n = 40)c					Breeding pig farms (n = 28)d
	Mean	SD	Median	Min	Max	Mean	SD	Median	Min	Max
A. Purchase of animals and semena	92.1	9.31	95.7	72.8	99.8	90.8	10.6	96.7	73	99.8
B. Transport of animals, removal of manure/dead animalsa	76.4	11.3	78.3	41.6	95.7	77.3	10.6	78.7	54	95.7
C. Feed, water and equipment supplya	55.9	21.8	53.6	14.3	100	55.0	23.4	51.8	14	100
D. Personnel and visitorsa	63.5	19.9	64.7	14.7	100	66.3	20.8	67.6	18	100
E. Vermin/bird controla	67.3	21.5	72.8	27.3	100	61.4	21.8	63.7	27	100
F. Environment and regiona	85.9	19.3	85	10	100	88.2	15.2	90.0	30	100
External biosecurity score	74.5	7.89	74.8	54.5	90.5	74.4	6.95	74.8	55	84.5
G. Disease managementb	80.3	20.7	80	0	100	80.0	21.8	80.0	0	100
H. Farrowing periodb	27.9	26.4	33.9	0	78.5	43.1	18.4	39.3	0	67.8
I. Nurseryb	43.2	32	53.6	0	89.3	57.2	23.8	60.7	0	89.3
J. Fattening pigsb	56.7	36.3	78.5	0	100	47.4	36.6	42.8	0	100
K. Measures between compartments and the use of equipmentb	49.3	18.3	46.4	14.3	100	45.6	15.4	46.4	17.9	85.7
L. Cleaning and disinfectionb	66.8	24.5	72.5	0	100	59.2	24.1	61.3	0	95.0
Internal biosecurity score	60.5	14.4	59.6	25.7	89.9	55.9	12.0	57.1	29.0	87.0
Total biosecurity score	67.5	10	68.3	40.1	89.5	65.1	8.15	65.4	43.8	83.8

^aExternal biosecurity subcategories.

^bInternal biosecurity subcategories.

^cAll farms having fattening pigs in our initial sample.

^dAll farms having breeding pigs in our initial sample.