Assessing risk profiles for Salmonella serotypes in breeding pig operations in Portugal using a Bayesian hierarchical model

Table 2 Pen variables assessed by the questionnaire and distribution of the pen samples by the categories of the outcome variable

	Number of pen samples by the categories of the outcome variable				Number of pen samples by the categories of the outcome variable
	1	2	3		1	2	3
PEN VARIABLES
The pen has direct access to outside				Sanitary gap before breeders entering
No	1146	30	92	No	626	19	44
Yes	354	16	32	Yes	874	27	80
Individual pen				Feed
No	1194	41	98	Dry pellet	229	7	27
Yes	306	5	24	Dry non pellet	1230	36	97
Missing observations	0	0	2	Wet	41	3	0
Diarrhoea in the last 3 months				Floor
No	1445	45	118	Fully slatted	139	5	10
Yes	33	1	2	Others	1361	41	114
Missing observations	22	0	4	Source of feed
Age of the breeding sows				Exclusively own	199	8	8
Only gilts or gilts and others	874	38	73	Bought + Mixture	1301	38	116
Without gilts	626	8	51	Potential Salmonella control substances added to water
Sex of the breeding pigs				No	1291	38	111
Only females	1430	44	114	Yes	209	8	13
Males and females	70	2	10	Use of antibiotics in the last 4 weeks in breeders
Breeding sector				No	1229	45	103
Mating room	210	10	21	Yes	271	1	21
Gestation room	789	26	62	Way how was collected the sample
Mixture of room	58	1	14	Compose sample	121	1	11
Farrowing room	390	7	22	Swab	1379	45	113
Replacement breeders	44	2	5	Number of pigs in the pen
				=10	1284	34	94
				>10	216	12	30

Legend:1 (no Salmonella), 2 (serotype Typhimurium or serotype 1,4,5,12:i:-), 3 (other serotypes).

ISSN: 1746-6148