Table 2.
The number of infected samples, serotype, and pulsotype of Salmonella in broiler slaughterhouses A, B, and C.
| Slaughterhouse |
A |
B |
C |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Samplesa | 1st sampling day |
2nd sampling day |
1st sampling day |
2nd sampling day |
1st sampling day |
2nd sampling day |
||||||
| No. | Serotype (N)—pulsotype | No. | Serotype (N)—pulsotype | No. | Serotype—pulsotype | No. | Serotype—pulsotype | No. | Serotype—pulsotype | No. | Serotype (N)—pulsotype | |
| Before slaughter | ||||||||||||
| Hanging area | ||||||||||||
| Three shackles before the hanging area | 1/1 | Infantis—F | ||||||||||
| Two wheels and 25 cm transport rail before the hanging area | 1/1 | Infantis—F | ||||||||||
| Two wheels and 25 cm transport rail after stunning | 1/1 | Infantis—F | ||||||||||
| Scalding tank | ||||||||||||
| Three shackles | 1/3 | Infantis—F | 2/3 | Infantis—F’1 | ||||||||
| Two wheels and 25 cm transport rail | 2/4 | Infantis—F | 3/3 | Infantis—F | ||||||||
| Plucking machine | ||||||||||||
| Three shackles | 1/3 | Infantis—F | 1/3 | Infantis—F | 1/3 | Infantis—F′ | ||||||
| Two wheels and 25 cm transport rail | 1/3 | Paratyphi B var Java—E | 3/3 | Infantis (2)—F Paratyphi B var Java (1)—E | ||||||||
| Plucking fingers −1 element | 2/3 | Infantis—F | 1/3 | Minnesota—B | 1/3 | Rissen—P | 2/3 | Infantis—F′ | ||||
| Plastic bands between fingers (400 cm2) | 3/3 | Infantis—F | 1/3 | Typhimurium—V’1 | 1/3 | Infantis—F′ | ||||||
| Construction (400 cm2) | 1/3 | Infantis—F | 1/3 | Typhimurium—V | 1/3 | Infantis—F′ | ||||||
| Evisceration line | ||||||||||||
| Head puller | 1/1 | Infantis—F | ||||||||||
| Lung remover—1 element | 1/1 | Infantis—F′ | ||||||||||
| Cutting line | ||||||||||||
| Two wheels and 25 cm of transport rail | 1/3 | Livingstone—C | ||||||||||
| Knife to cleave the thighs in two | 1/1 | Paratyphi B var Java—E | ||||||||||
| Samples during slaughter of the first flock | ||||||||||||
| Four crates of 6 transport container after use (4 × 400 cm2) | 2/6 | Infantis—F | 2/6 | Infantis—F | 1/6 | Infantis—I | ||||||
| Swabs of feathers before scalding | 1/3 | Infantis—F | 2/3 | Infantis—F | 2/3 | Infantis—I/H | ||||||
| Swabs of feathers after scalding | 2/3 | Infantis—I | ||||||||||
| Feathers from the plucking machine (25g) | 2/3 | Infantis—F | 3/3 | Livingstone—C | 1/3 | Infantis—I | 3/3 | Infantis—I | ||||
| 25 ml scalding water | 5/6 | Livingstone—C | 2/6 | Typhimurium—V | ||||||||
| Neck skins after plucking (25g) | 5/30 | Infantis (1)—F′ Paratyphi B var Java (4)—E |
25/29 | Infantis (21)—F Livingstone (6)—C |
1/30 | Rissen—P | 9/30 | Infantis—I/F′ | ||||
| Neck skins after evisceration (25g) | 5/30 | Infantis (4)—F Paratyphi B var Java (2)—E |
23/30 | Infantis(13)—F Livingstone (10)—C |
6/30 | Infantis—I | ||||||
| Neck skins after chilling (25g) | 7/30 | Infantis (6)—F Paratyphi B var Java (2)—E |
27/30 | Infantis (20)—F Paratyphi B var Java (1)—E Livingstone (6)—C |
1/30 | Infantis—F°2 | 6/30 | Infantis—I/F | ||||
| Thighs (25 g skin) | 1/30 | Paratyphi B var Java—E | 20/30 | Infantis(17)—F Livingstone (4)—C |
3/30 | Infantis (2)—I Enteritidis (1)—M′1 |
||||||
N: a: An overview of all samples collected can be seen in Table 1. Only samples that were Salmonella positive on one of the sampling occasions, are shown here.
1
The symbol “’” after the letter means that up to 2 bands were different between 2 isolates when digested with XbaI.
2
the symbol “°” after the letter means that the fingerprints were the same when digested with XbaI but a difference of one band was noticed when digested with NotI.