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Table 1 Number of salmonella positive samples from the weekly environmental surveillance of the production line of feed mills in Sweden - before heat treatment; and distribution of positive samples and estimated share of national feed production between 1995 and 2005

From: An assessment of soybeans and other vegetable proteins as source of salmonella contamination in pig production

Year/Feed producing company No. of salmonella positive samples before heat treatment
(% distribution of positive samples between companies for each year)
Estimated share of national production
  1995 1997 2000 2001 2002 2003 2004 2005 Total  
A +B 36
(90%)
22
(82%)
45
(94%)
20
(95%)
17
(94%)
21
(66%)
7
(88%)
19
(90%)
187
(87%)
75%
C 4
(10%)
5
(18%)
2
(4%)
1
(5%)
1
(6%)
7
(22%)
0
(0%)
2
(10%)
22
(10%)
15%
D+E 1) - 0
(0%)
1
(2%)
0
(0%)
0
(0%)
4
(12%)
1
(12%)
0
(0%)
6
(3%)
10%
Total 40 27 48 21 18 32 8 21 215 100%
  1. 1) Includes also technically less advanced smaller factories