Time (h) relative to pasteurization Standard Plate Count (cfu/ml) Incubation Temperature (°C)
-1§ 439,000 Farm 8
0£ 809 Farm 43
1 103 Indoor¥ 7
2 123 Indoor 6
3 137 Indoor 6
4 163 Indoor 6
5 157 Indoor 6
6 172 Indoor 5
7 185 Indoor 5
8 177 Indoor 5
10 181 Indoor 5
12 163 Indoor 5
24 173 Indoor 5
1 150 Outdoor 2
2 121 Outdoor 5
3 132 Outdoor 7
4 147 Outdoor 9
5 173 Outdoor 10
6 180 Outdoor 13
7 168 Outdoor 14
8 150 Outdoor 13
10 163 Outdoor 13
12 228 Outdoor 7
24 148 Outdoor 2
§-1 indicates immediately pre-pasteurization; raw milk on the farm
£0 indicates immediately post-pasteurization
¥ Indoor incubation was refrigeration during Winter
Table 4: Standard plate counts for bacteria in pasteurized milk samples over time post-pasteurization by incubation method and hourly temperature for Winter season. Each value is the mean for 3 samples, one from each study farm.