TABLE 3.

Occurrence of the Salmonella serovar Typhimurium DT12 test strain and other Salmonella serotypes in pigs and the environment of paddocks A to F in three periods

PeriodbWkNo. of Salmonella-positive samples or other Salmonella serotypes in paddocka:
AcBcCDEF
PigsENVPigsENVPigsENVPigsENVPigsENVPigsENV
111213465
221213686
321212497
4121687
5Gol235696
623634596
21107Ana1526
170
2AnaNewAna22456
107170
3Rea107New1286
170
4Gol10910711356
ND (3)107170
StaUga
5DerLiv41Uga326
Der41170170
6Der41Liv41247
31NewNew1366525
New107
Ohio
2New22571314
NewNew107
3NewRDNC12441114
109109109IndRDNC107
43.10:New11Liv452115
4.12:4.12:
Ago
5112334
6Ohio1324324
NT109109109
Uga
  • a The numbers refer to the number of times the Salmonella test strain was detected on each sampling occasion. Additional detection of other Salmonella serotypes is shown with the following abbreviations: Ana, Anatum; Ago, Agona; Der, Derby; Gol, Goldcoast; Ind, Indiana; Liv, Livingstone; New, Newport; Rea, Reading; Sta, Stanley; Uga, Uganda; 4.12:, 4.12:d:−; 3.10:, 3.10:−:1.5; NT, not typeable; ND, not serotyped. 41, 107, 109, and 170 are phage type (DT) numbers of serovar Typhimurium; RDNC, unspecific phage type.

  • b Three experimental periods each lasting 6 weeks, running from late April to the beginning of September.

  • c Paddocks A and B are Salmonella-negative control paddocks.