TABLE 1.
Log10 geometric mean APC load for each sample type in each season or plant
| Season or plant | Log10 geometric mean APC load (95% CI)a
|
% HTCTb | ||
|---|---|---|---|---|
| Hide | Carcass
|
|||
| Preevisceration | Postintervention | |||
| Seasons | ||||
| Summer | 8.19 (8.13-8.24)B | 6.47 (6.42-6.55)B | 1.96 (1.91-2.04)B | 3.4 ± 3.6 |
| Fall | 6.53 (6.57-6.67)A | 4.70 (4.62-4.76)A | 1.55 (1.49-1.59)A | 2.7 ± 2.5 |
| Winter | 6.17 (6.12-6.22)A | 4.24 (4.19-4.30)A | 1.46 (1.42-1.51)A | 1.4 ± 0.7 |
| Spring | 6.54 (6.49-6.60)A | 4.94 (4.88-5.01)A | 1.49 (1.45-1.54)A | 3.9 ± 3.9 |
| Plants | ||||
| A | 7.07 (7.00-7.16)B | 5.25 (5.18-5.32)A | 1.74 (1.69-1.79)A | 1.9 ± 1.4 |
| B | 6.72 (6.64-6.80)A | 5.39 (5.29-5.50)B | 1.52 (1.48-1.56)A | 5.8 ± 3.7 |
| C | 6.92 (6.85-6.99)A | 4.55 (4.47-4.64)A | 1.73 (1.67-1.80)B | 0.5 ± 0.3 |
| D | 6.71 (6.75-6.90)A | 5.16 (5.06-5.22)A | 1.47 (1.43-1.52)A | 3.3 ± 2.1 |
a
Each season or plant log10 value represents the geometric mean of 760 samples. Values that do not have a common uppercase letter following them are significantly different as determined by a one-way ANOVA and Bonferroni's multiple-comparison posttest (P < 0.05).
b
Percent HTCT calculated by dividing the geometric mean APC of the pre-evisceration carcass samples calculated for each season or each plant, by the geometric mean APC determined for the paired hide samples. HTCT values are shown as the mean and standard deviation (± SD) calculated either by season or by plant.